Page 1 R410A SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS November 2020 No. OCH668 TECHNICAL & SERVICE MANUAL REVISED EDITION-G <Outdoor unit> [Model Name] [Service Ref.] Revision: • PUMY-SP112VKM-ER(-BS)R2.TH, PUMY-SP112VKM.TH PUMY-SP112VKMR1.TH PUMY-SP112VKMR2.TH PUMY-SP112VKM PUMY-SP125VKM-ER(-BS)R2.TH, PUMY-SP140VKM-ER(-BS)R2.TH, PUMY-SP112VKM-ETR2.TH PUMY-SP112VKM-ERR2.TH PUMY-SP112VKM-ET/ER PUMY-SP112YKM-ER(-BS)R2.TH, PUMY-SP125VKM.TH PUMY-SP125VKMR1.TH PUMY-SP125VKMR2.TH PUMY-SP125VKM PUMY-SP125YKM-ER(-BS)R2.TH, and...
Page 2 PUMY-SP125YKMR2.TH PUMY-SP140YKMR1.TH PUMY-SP140YKMR2.TH PUMY-SP112VKMR1.TH-BS PUMY-SP112VKM-BSR2.TH PUMY-SP125VKMR1.TH-BS PUMY-SP125VKM-BSR2.TH PUMY-SP140VKMR1.TH-BS PUMY-SP140VKM-BSR2.TH PUMY-SP112YKMR1.TH-BS PUMY-SP112YKM-BSR2.TH PUMY-SP125YKMR1.TH-BS PUMY-SP125YKM-BSR2.TH PUMY-SP140YKMR1.TH-BS PUMY-SP140YKM-BSR2.TH • Some connectable indoor units have been added. PUMY-SP112VKM.TH PUMY-SP112VKMR1.TH PUMY-SP125VKM.TH PUMY-SP125VKMR1.TH PUMY-SP140VKM.TH PUMY-SP140VKMR1.TH PUMY-SP112YKM.TH PUMY-SP112YKMR1.TH PUMY-SP125YKM.TH PUMY-SP125YKMR1.TH PUMY-SP140YKM.TH PUMY-SP140YKMR1.TH PUMY-SP112VKM.TH-BS PUMY-SP112VKMR1.TH-BS PUMY-SP125VKM.TH-BS PUMY-SP125VKMR1.TH-BS PUMY-SP140VKM.TH-BS PUMY-SP140VKMR1.TH-BS...
Page 3 SAFETY PRECAUTION 1-1. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Precautions during the repair service Preparation before the repair service • Do not perform the work involving the electric parts • Prepare the proper tools. with wet hands. •...
Page 4 [1] Cautions for service (1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them. [2] Additional refrigerant charge When charging directly from cylinder (1) Check that cylinder for R410A on the market is a syphon type.
Page 5 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is the same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the work- ing pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.
Page 6 OVERVIEW OF UNITS 2-1. SYSTEM CONSTRUCTION 4.5HP Outdoor unit SP112 SP125 SP140 Applicable Capacity Type 10 to Type 140 indoor unit Number of units 1 to 12 units 1 to 12 units 1 to 12 units 50 to 130% of outdoor unit capacity * Total system capacity range CMY-Y62-G-E CMY-Y64-G-E...
Page 7 2-2. SYSTEM CONSTRUCTION (BRANCH BOX SYSTEM) 4.5HP Outdoor unit SP112 SP125 SP140 Capacity kW unit: Type 15 to Type 100 Number of units 2 to 8 units Applicable indoor unit Total system capacity 50 to 130% of outdoor unit capacity 50 to 130% of outdoor unit capacity 50 to 130% of outdoor unit capacity range...
Page 8 2-3. SYSTEM CONSTRUCTION (MIXED SYSTEM) 4.5HP Outdoor unit SP112 SP125 SP140 Capacity CITY MULTI indoor unit Type 10 to Type 140 Via branch box kW unit: Type 15 to Type 100 Number Via branch box CITY MULTI indoor Via branch box CITY MULTI indoor Via branch box CITY MULTI indoor...
Page 9 2-4. SYSTEM SPECIFICATIONS (1) Outdoor Unit Outdoor unit SP112 SP125 SP140 Cooling (kW) 12.5 14.0 15.5 Capacity Heating (kW) 14.0 16.0 16.5 Cooling capacity indicates the maximum value at operation under the following condition. *Cooling Indoor : D.B. 27°C/W.B. 19°C Outdoor : D.B.
Page 10 0.20 × 1 External static press. 0 Pa/30 Pa Compressor Type × Quantity Twin rotary hermetic compressor × 1 Manufacturer Mitsubishi Electric Corporation Starting method Inverter Capacity control Cooling 26 to 100 Cooling 24 to 100 Cooling 21 to 100...
Page 11 0.20 × 1 External static press. 0 Pa/30 Pa Compressor Type × Quantity Twin rotary hermetic compressor × 1 Manufacturer Mitsubishi Electric Corporation Starting method Inverter Capacity Cooling 26 to 100 Cooling 24 to 100 Cooling 21 to 100 control...
Page 12: Table Of Contents
DATA 4-1. SELECTION OF COOLING/HEATING UNITS <Cooling> Design Condition Outdoor Design Dry Bulb Temperature 45ºC 10.6 kW Total Cooling Load Room1 27ºC Indoor Design Dry Bulb Temperature Indoor Design Wet Bulb Temperature 20ºC 4.6 kW Cooling Load Room2 Indoor Design Dry Bulb Temperature 24ºC Indoor Design Wet Bulb Temperature 18ºC...
Page 13: M Series S Series P Series
<Heating> Design Condition Outdoor Design Wet Bulb Temperature 2ºC Total Heating Load 13.2 kW Room1 Indoor Design Dry Bulb Temperature 23ºC Heating Load 5.4 kW Room2 23ºC Indoor Design Dry Bulb Temperature 7.8 kW Heating Load <Other> 60 m Indoor/Outdoor Equivalent Piping Length Capacity of indoor unit Model Number for indoor unit...
Page 14 4-2. CORRECTION BY TEMPERATURE The outdoor units have varied capacity at different designing temperature. Using the nominal cooling capacity value and the ratio below, the capacity can be observed at various temperature. <Cooling> Figure 7 Indoor unit temperature correction To be used to correct indoor unit capacity only Indoor Temperature [°CW.B.] Figure 8 Outdoor unit temperature correction 15.0...
Page 15: Pumy-Sp125
Figure 9 Outdoor unit temperature correction To be used to correct outdoor unit capacity only PUMY-SP112VKM(-BS) PUMY-SP112VKM-ET(-BS) PUMY-SP112VKM-ER(-BS) PUMY-SP125VKM(-BS) PUMY-SP125VKM-ET(-BS) PUMY-SP125VKM-ER(-BS) PUMY-SP112YKM(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP112YKM-ER(-BS) PUMY-SP125YKM(-BS) PUMY-SP125YKM-ET(-BS) PUMY-SP125YKM-ER(-BS) Indoor Temperature 24°C W.B 22°C W.B 20°C W.B 19°C W.B 16°C W.B 18°C W.B Outdoor Temperature [°C D.B.] PUMY-SP140VKM(-BS) PUMY-SP140VKM-ET(-BS)
Page 16 <Heating> Figure 10 Indoor unit temperature correction To be used to correct indoor unit capacity only Indoor Temperature [°CD.B.] Figure 11 Outdoor unit temperature correction To be used to correct outdoor unit capacity only 20°C D.B -5.0 10.0 15.0 -20.0 -15.0 -10.0 Outdoor Temperature [°C W.B.]...
Page 17 4-3. STANDARD OPERATION DATA (REFERENCE DATA) PUMY-SP112VKM(-BS) PUMY-SP125VKM(-BS) PUMY-SP140VKM(-BS) PUMY-SP112VKM-ET(-BS) PUMY-SP125VKM-ET(-BS) PUMY-SP140VKM-ET(-BS) PUMY-SP112VKM-ER(-BS) PUMY-SP125VKM-ER(-BS) PUMY-SP140VKM-ER(-BS) Model name PUMY-SP112YKM(-BS) PUMY-SP25YKM(-BS) PUMY-SP140YKM(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP125YKM-ET(-BS) PUMY-SP140YKM-ET(-BS) PUMY-SP112YKM-ER(-BS) PUMY-SP125YKM-ER(-BS) PUMY-SP140YKM-ER(-BS) Indoor 27/19°C 20°C 27/19°C 20°C 27/19°C 20°C Ambient D.B./ temperature W.B. Outdoor 35°C 7/6°C 35°C 7/6°C 35°C...
Page 18 4-4. STANDARD CAPACITY DIAGRAM 4-4-1. PUMY-SP112VKM(-BS) PUMY-SP112YKM(-BS) <Cooling> PUMY-SP112VKM-ET(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP112VKM-ER(-BS) PUMY-SP112YKM-ER(-BS) Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on "4-1. SELECTION OF COOLING/HEATING UNITS". 16.0 14.0 12.0...
Page 19 4-4-2. PUMY-SP112VKM(-BS) PUMY-SP112YKM(-BS) <Heating> PUMY-SP112VKM-ET(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP112VKM-ER(-BS) PUMY-SP112YKM-ER(-BS) 16.0 14.0 12.0 10.0 10.0 12.0 14.0 16.0 18.0 20.0 Total capacity of indoor units(kW) 10.0 12.0 14.0 16.0 18.0 20.0 Total capacity of indoor units(kW) 20.0 V-Type 15.0 220V 230V 10.0 240V 10.0 12.0...
Page 20 4-4-3. PUMY-SP125VKM(-BS) PUMY-SP125YKM(-BS) <Cooling> PUMY-SP125VKM-ET(-BS) PUMY-SP125YKM-ET(-BS) PUMY-SP125VKM-ER(-BS) PUMY-SP125YKM-ER(-BS) Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on "4-1. SELECTION OF COOLING/HEATING UNITS". 18.0 16.0 14.0 12.0 10.0 10.0 12.0...
Page 21 4-4-4. PUMY-SP125VKM(-BS) PUMY-SP125YKM(-BS) <Heating> PUMY-SP125VKM-ET(-BS) PUMY-SP125YKM-ET(-BS) PUMY-SP125VKM-ER(-BS) PUMY-SP125YKM-ER(-BS) 18.0 16.0 14.0 12.0 10.0 10.0 12.0 14.0 16.0 18.0 20.0 Total capacity of indoor units(kW) Total capacity of indoor units(kW) V-Type 220V 230V 240V Total capacity of indoor units(kW) Y-Type 380V 400V 415V Total capacity of indoor units(kW)
Page 22 4-4-5. PUMY-SP140VKM(-BS) PUMY-SP140YKM(-BS) <Cooling> PUMY-SP140VKM-ET(-BS) PUMY-SP140YKM-ET(-BS) PUMY-SP140VKM-ER(-BS) PUMY-SP140YKM-ER(-BS) Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on "4-1. SELECTION OF COOLING/HEATING UNITS". 20.0 18.0 16.0 14.0 12.0 10.0 10.0...
Page 23 4-4-6. PUMY-SP140VKM(-BS) PUMY-SP140YKM(-BS) <Heating> PUMY-SP140VKM-ET(-BS) PUMY-SP140YKM-ET(-BS) PUMY-SP140VKM-ER(-BS) PUMY-SP140YKM-ER(-BS) 20.0 18.0 16.0 14.0 12.0 10.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 Total capacity of indoor units(kW) 10.0 12.0 14.0 16.0 18.0 20.0 22.0 Total capacity of indoor units(kW) 25.0 V-Type 20.0 220V 15.0...
Page 24 4-5. CORRECTING CAPACITY FOR CHANGES IN THE LENGTH OF REFRIGERANT PIPING During cooling, obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use indoor capacity, and find the capacity ratio corresponding to the standard piping length from Figure 12 to 14. Then multiply by the cooling capacity from Figure 7 to 9 in "4-2.
Page 25 Figure 14 <Cooling> PUMY-SP140VKM(-BS) PUMY-SP140VKM-ET(-BS) PUMY-SP140VKM-ER(-BS) PUMY-SP140YKM(-BS) PUMY-SP140YKM-ET(-BS) PUMY-SP140YKM-ER(-BS) Total capacity of indoor unit 1.00 0.95 0.90 0.85 11.6 0.80 15.5 20.2 0.75 0.70 0.65 0.60 0.55 0.50 Piping equivalent length (m) Figure 15 <Heating> PUMY-SP112VKM(-BS) PUMY-SP112VKM-ET(-BS) PUMY-SP112VKM-ER(-BS) PUMY-SP112YKM(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP112YKM-ER(-BS) PUMY-SP125VKM(-BS) PUMY-SP125VKM-ET(-BS)
Page 26 4-6. NOISE CRITERION CURVES PUMY-SP112VKM(-BS) PUMY-SP125VKM(-BS) PUMY-SP112YKM(-BS) PUMY-SP125YKM(-BS) PUMY-SP112VKM-ET(-BS) PUMY-SP125VKM-ET(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP125YKM-ET(-BS) MODE SPL(dB) LINE SPL(dB) MODE LINE HEATING HEATING PUMY-SP112VKM-ER(-BS) PUMY-SP125VKM-ER(-BS) COOLING COOLING PUMY-SP112YKM-ER(-BS) PUMY-SP125YKM-ER(-BS) SILENT(Cooling) SILENT(Cooling) SUPER SILENT 1(Cooling) SUPER SILENT 1(Cooling) SUPER SILENT 2(Cooling) SUPER SILENT 2(Cooling) NC-70 NC-70 NC-60...
Page 27 OUTLINES AND DIMENSIONS Unit: mm OCH668G...
Page 28 WIRING DIAGRAM PUMY-SP112VKM(-BS) PUMY-SP125VKM(-BS) PUMY-SP140VKM(-BS) PUMY-SP112VKM-ET(-BS) PUMY-SP125VKM-ET(-BS) PUMY-SP140VKM-ET(-BS) PUMY-SP112VKM-ER(-BS) PUMY-SP125VKM-ER(-BS) PUMY-SP140VKM-ER(-BS) LEV-A LEV-B TH7 TH6 TH3 TH4 63LS 63HS MULTI. B. is the switch position. CN3D CN3S CN3N SWU2 SWU1 SW9 CNF1 (WH) (RD) (BU) (WH) 63HS TH7/6 (WH) (RD) (WH) (WH) (BK)
Page 29 PUMY-SP112YKM(-BS) PUMY-SP125YKM(-BS) PUMY-SP140YKM(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP125YKM-ET(-BS) PUMY-SP140YKM-ET(-BS) PUMY-SP112YKM-ER(-BS) PUMY-SP125YKM-ER(-BS) PUMY-SP140YKM-ER(-BS) LEV-A LEV-B TH7 TH6 TH3 TH4 63LS 63HS MULTI. B. is the switch position. CN3D CN3S CN3N SWU2 SWU1 CNF1 (WH) (RD) (BU) (WH) 63HS TH7/6 (WH) (RD) (WH) (WH) (BK) CNLVA CNLVB (WH)
Page 30 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 7-1. TRANSMISSION SYSTEM SETUP OCH668G...
Page 31 7-2. Special Function Operation and Settings for M-NET Remote Controller Refer to 12-11. "SPECIAL FUNCTION OPERATION AND SETTINGS" for setting details. 7-3. REFRIGERANT SYSTEM DIAGRAM Thermistor (TH7) Check valve <Ambient> <High pressure> Service port 4-way valve Strainer Refrigerant Gas pipe Oil separator Ball valve Low pressure...
Page 32 7-4. REFRIGERANT SYSTEM DIAGRAM (WHEN USING BRANCH BOX) Condenser/evaporator Room temperature temperature thermistor (TH5 or RT12) thermistor (TH1 or RT11) Thermistor (TH7) Check valve <Ambient> <High pressure> Service port 4-way valve Strainer Oil separator Ball valve Low pressure High pressure sensor(63LS) sensor (63HS) Distributor...
Page 33 ■ Pipe size (Branch box-indoor unit) Indoor unit series Model number Liquid pipe (mm) Gas pipe (mm) 15–42 ø6.35 ø9.52 ø6.35 ø12.7 M series or S series ø6.35 ø15.88 71, 80 ø9.52 ø15.88 35–50 ø6.35 ø12.7 P series 60–100 ø9.52 ø15.88 * If the pipe size of indoor unit is different, use a different-diameter joint.
Page 34 7-5. SYSTEM CONTROL 7-5-1. Example for the System • Example for wiring control cables, wiring method and address setting, permissible lengths, and the constraint items are listed in the standard system with detailed explanation. A. Example of an M-NET remote controller system (address setting is necessary.) Example of wiring control cables Wiring Method and Address Setting 1.
Page 35 • Name, Symbol and the Maximum Remote controller Units for Connection Name Symbol Maximum units for connection Outdoor unit — M-IC Refer to "2-1. SYSTEM CONSTRUCTION" M-NET control Indoor unit M-NET remote M-NET RC Maximum 2 M-NET RC for 1 indoor unit, Maximum 12 M-NET RC for 1 OC controller Permissible Lengths Constraint items...
Page 36 B. Example of a group operation system with 2 or more outdoor units and an M-NET remote controller. (Address settings are necessary.) (51) M-IC M-IC M-IC M-IC (01) (02) (05) (06) M1 M2 S M1 M2 S M1 M2 S M1 M2 S M1 M2 S M1 M2 S...
Page 37 • Name, Symbol, and the Maximum Units for Connection • Longest length via outdoor units : L [ 500 m (1.25 mm²) • Longest transmission cable length : L [ 200 m (1.25 mm²) • Remote controller cable length : R [ 10 m (0.5 to 1.25 mm²) If the length exceeds 10 m, use a 1.25 mm²...
Page 38 C. Example of an MA remote controller system (address setting is not necessary.) NOTE: In the case of same group operation, need to set the address that is only main CITY MULTI series indoor unit. Example of wiring control cables Wiring Method and Address Setting 1.
Page 39 Permissible Lengths Constraint items Longest transmission cable length: [ 200 m (1.25 mm²) (00) M-IC M-IC MA remote controller cable length: (00) (00) [ 200 m (0.3 to 1.25 mm²) TB15 TB15 M1 M2 S M1 M2 S M1 M2 S M1 M2 S (00) M-NET RC...
Page 40 D. Example of a group operation with 2 or more outdoor units and an MA remote controller. (Address settings are necessary.) M-IC M-IC M-IC M-IC (51) (01) (02) (05) (06) TB15 TB15 TB15 TB15 M1 M2 S M1 M2 S M1 M2 S M1 M2 S M1 M2 S...
Page 41 • Name, Symbol, and the Maximum Units for Connection Longest length via outdoor unit (M-NET cable): L and L [ 500 m (1.25 E more) Longest transmission cable length (M-NET cable): L and L and L and L [ 200 m (1.25 E or more) MA Remote controller cable length: m and m and m...
Page 42 E. Example of a system using Branch Box and A-Control indoor unit TB3A TB5/TB15 Branch Box A-IC MA-RC (01) (51) TB3B TB5/TB15 M1 M2 S M1 M2 S A-IC MA-RC (02) TB3C TB5/TB15 A-IC MA-RC (03) (01) TB3D A-IC WL-RC (04) TB3E A-IC...
Page 43 • Name, Symbol, and the Maximum Units for Connection Longest length via outdoor unit (M-NET cable): L [ 500 m (1.25 E or more) Longest transmission cable length (M-NET cable): L [ 200 m (1.25 E or more) Longest transmission cable length (A-Control cable): L [ 25 m (1.5 E) Remote controller cable length: m [ 200 m (0.3 to 1.25 E)
Page 44 F. Example of a system using Branch Box, A-Control indoor unit, and CITY MULTI series indoor unit. TB3A TB5/TB15 Branch Box A-IC MA-RC (01) (51) TB3B TB5/TB15 M1 M2 S M1 M2 S A-IC MA-RC (02) TB3C TB5/TB15 A-IC MA-RC (03) (01) TB3D...
Page 45 • Name, Symbol, and the Maximum Units for Connection Longest length via outdoor unit (M-NET cable): L [ 500 m (1.25 E or more) Longest transmission cable length (M-NET cable): L and L [ 200 m (1.25 E or more) Longest transmission cable length (A-Control cable): L [ 25 m (1.5 E) Remote controller cable length: m...
Page 46 TROUBLESHOOTING 8-1. CHECKPOINTS FOR TEST RUN 8-1-1. Procedures before test run (1) Before a test run, make sure that the following work is completed. • Installation related: Make sure that the panel of cassette type and electrical wiring are done. Otherwise electrical functions like auto vane will not operate normally.
Page 47 8-1-2. Countermeasures for Error During Test Run • If a problem occurs during test run, a code number will appear on the remote controller (or LED on the outdoor unit), and the air conditioning system will automatically cease operating. Determine the nature of the abnormality and apply corrective measures. Detected Unit Check Check...
Page 48 Check code Serial communication error 0403 (Ed) Abnormal points and detection methods Causes and checkpoints If serial communication between the outdoor multi controller circuit board Wire breakage or contact failure of connector CN2 or and outdoor power circuit board is defective. Malfunction of communication circuit to power circuit board on outdoor multi controller circuit board Malfunction of communication circuit on outdoor...
Page 49 Check code Compressor temperature trouble 1102 (U2) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints (1) If TH4 falls into following temperature conditions; 1. Malfunction of stop valve 2. Over-heated compressor operation caused by ●exceeds 105°C [221°F] continuously for 5 minutes shortage of refrigerant ●exceeds 115°C [239°F] 3.
Page 50 Check code Compressor temperature trouble 1102 (U2) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Disconnect the thermistor wiring to check the resistance.
Page 51 Check code High pressure trouble 1302 (UE) Chart 1 of 4 Abnormal points and detection methods Causes and checkpoints (1) High pressure abnormality (63H operation) 1. Defective operation of stop valve (not fully open) Abnormal if 63H operates(*) during compressor operation. (* 4.15 MPaG 2.
Page 52 Check code High pressure trouble 1302 (UE) Chart 2 of 4 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Is the indoor unit filter clogged? Clean the filter.
Page 53 Check code High pressure trouble 1302 (UE) Chart 3 of 4 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Is the resistance detected? Replace the TH7. Disconnect the indoor LEV wiring to check the resistance.
Page 54 Check code High pressure trouble 1302 (UE) Chart 4 of 4 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Is the resistance detected? Replace the SV1. Is the connector for outdoor multi controller circuit board 63H Reconnect the connector or connect it tightly.
Page 55 Check code Superheat due to low discharge temperature trouble 1500 (U7) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints If the discharge superheat is continuously detected −15°C [−27°F](*) or less for 1. Disconnection or loose connection of TH4 5 minutes even though the indoor LEV has minimum open pulse after the 2.
Page 56 Check code Superheat due to low discharge temperature trouble 1500 (U7) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Is the resistance detected? Replace the indoor LEV.
Page 57 Check code Refrigerant shortage trouble 1501 (U2) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints (1) When all of the following conditions have been satisfied for 15 1. Defective operation of stop valve (not fully open) consecutive minutes: 2.
Page 58 Check code Refrigerant shortage trouble 1501 (U2) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Is the resistance detected? Replace the thermistor. Check the 63HS voltage.
Page 59 Check code Closed valve in cooling mode 1501 (U2) Abnormal points and detection methods Causes and checkpoints If stop valve is closed during cooling operation. 1. Outdoor liquid/gas valve is closed. 2. Malfunction of outdoor LEV (LEV-A)(blockage) When both of the following temperature conditions have been satisfied for 20 minutes or more during cooling operation.
Page 60 Check code Freeze protection of branch box or indoor unit 1503 (P6) Abnormal points and detection methods Causes and checkpoints The purpose of the check code is to prevent indoor unit from freezing or 1. Wrong piping connection between indoor unit and dew condensation which is caused when a refrigerant keeps flowing into branch box the unit in STOP.
Page 61 Check code 4-way valve trouble in heating mode 1508 (EF) Abnormal points and detection methods Causes and checkpoints If 4-way valve does not operate during heating operation. 1. 4-way valve failure 2. Disconnection or failure of 4-way valve coil When any of the following temperature conditions is satisfied for 3 min or 3.
Page 62 Check code Compressor current interruption (Locked compressor) 4100 (UF) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints If overcurrent of DC bus or compressor is detected before 30 seconds 1. Closed stop valve since the compressor starts operating. 2.
Page 63 Check code Compressor current interruption (Locked compressor) 4100 (UF) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Connect the compressor wiring (U, V and Are they connected properly? W phase) properly, then turn the power back ON.
Page 64 Check code Compressor overcurrent interruption 4210 (UP) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints If overcurrent of DC bus or compressor is detected after 30 seconds since 1. Closed outdoor stop valve the compressor starts operating. 2.
Page 65 Check code Compressor overcurrent interruption 4210 (UP) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Connect the compressor wiring (U, V and W phase) properly, then turn the power Are they connected properly? back ON.
Page 66 Check code Voltage shortage /Overvoltage/PAM error/L1 open phase/ 4220 Primary current sensor error/Power synchronization signal error (U9) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints If any of following symptoms are detected; Decrease/increase of power supply voltage L1 open-phase (Y model only) ●Decrease of DC bus voltage to 200 V (\/ model), 350 V (Y model) Primary current sensor failure...
Page 67 Check code Voltage shortage/overvoltage/PAM error/L1 open phase/primary 4220 current sensor error/power synchronization signal error (U9) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. The black square (■) indicates a switch position. Diagnosis Remedy Continued from the previous page.
Page 68 Check code Heat sink temperature trouble 4230 (U5) Abnormal points and detection methods Causes and checkpoints If TH8 detects a temperature outside the specified range during 1. Blocked outdoor fan compressor operation. 2. Malfunction of outdoor fan motor 3. Blocked airflow path TH8: Thermistor <Heat sink>...
Page 69 Check code Power module trouble or Overcurrent trouble 4250 (U6) Abnormal points and detection methods Causes and checkpoints If both of the following conditions have been satisfied: 1. Short-circuit caused by looseness or disconnection of compressor wiring 1. Overcurrent of DC bus or compressor is detected during compressor operation.
Page 70 Check code Fan trouble (Outdoor unit) 4400 (U8) Abnormal points and detection methods Causes and checkpoints If no rotational frequency is detected, or detected a value outside the 1. Malfunction of fan motor specified range during fan motor operation. 2. Disconnection of CNF connector 3.
Page 71 Check code Compressor temperature thermistor (TH4) open/short 5101 (U3) <Detected in outdoor unit> Abnormal points and detection methods Causes and checkpoints If TH4 detects to be open/short. 1. Disconnection or contact failure of connectors (The open/short detection is disabled for 10 minutes after compressor 2.
Page 72 Check code Suction pipe temperature thermistor (TH6) open/short 5102 (U4) <Detected in outdoor unit> Abnormal points and detection methods Causes and checkpoints If TH6 detects to be open/short. 1. Disconnection or contact failure of connectors (The open/short detection is disabled during 10 seconds to 10 minutes 2.
Page 73 Check code Outdoor liquid pipe temperature thermistor (TH3) open/short 5105 (U4) Abnormal points and detection methods Causes and checkpoints If TH3 detects to be open/short. 1. Disconnection or contact failure of connectors (The open/short detection is disabled during 10 seconds to 10 minutes 2.
Page 74 Check code Ambient temperature thermistor (TH7) open/short 5106 (U4) Abnormal points and detection methods Causes and checkpoints If TH7 detects to be open/short 1. Disconnection or contact failure of connectors Open: −40°C [−40°F] or less 2. Characteristic defect of thermistor Short: 90°C [194°F] or more TH7: Thermistor <Ambient>...
Page 75 Check code HIC pipe temperature thermistor (TH2) open/short 5109 (U4) Abnormal points and detection methods Causes and checkpoints If TH2 detects to be open/short. 1. Disconnection or contact failure of connectors Open: −40°C [−40°F] or less 2. Characteristic defect of thermistor Short: 90°C [194°F] or more TH2: Thermistor <HIC pipe>...
Page 76 Check code Heat sink temperature thermistor(TH8) open/short 5110 (U4) Abnormal points and detection methods Causes and checkpoints If TH8 (Internal thermistor) detects to be open/short. 1. Disconnection or contact failure of connectors Open: −34.8°C [−30.6°F] or less 2. Characteristic defect of thermistor Short: 102°C [215.6°F] or more 3.
Page 77 Check code High pressure sensor (63HS) trouble 5201 (F5) Abnormal points and detection methods Causes and checkpoints 1. When the detected pressure in the High pressure sensor is 1kgf/F or 1. Defective High pressure sensor less during operation, the compressor stops operation and enters into 2.
Page 78 Check code Low pressure sensor (63LS) trouble 5202 (F3) Abnormal points and detection methods Causes and checkpoints 1. When the detected pressure in the Low pressure sensor is −2.3kgf/F 1. Defective Low pressure sensor or less, or 23.1kgf/F or more during operation, the compressor stops 2.
Page 79 Check code Primary current error 5300 (UH) Abnormal points and detection methods Causes and checkpoints If any of the following conditions is detected: 1. Decrease/trouble of power supply voltage 1 Primary current sensor detects any of the following conditions (single 2.
Page 80 Check code Duplex address error 6600 (A0) Abnormal points and detection methods Causes and checkpoints If 2 or more units with the same address exist. 1. There are 2 units or more with the same address in their controller among outdoor unit, indoor unit, Fresh Master, Lossnay or remote controller 2.
Page 81 Check code Transmission processor hardware error 6602 (A2) Abnormal points and detection methods Causes and checkpoints If the transmission line shows "1" although the transmission processor 1. A transmitting data collision occurred because of a transmitted "0". wiring work or polarity change has performed while the power is ON on either of the indoor/outdoor unit, Fresh Master or Lossnay 2.
Page 82 Check code Transmission bus BUSY error 6603 (A3) Abnormal points and detection methods Causes and checkpoints 1. An abnormality when no transmission status caused by transmitting 1. The transmission processor is unable to transmit due data collision continues for 8 to 10 minutes. to a short-cycle voltage such as noise is mixed on 2.
Page 83 Check code Signal communication error with transmission processor 6606 (A6) Abnormal points and detection methods Causes and checkpoints 1. If the data of unit/transmission processor were not normally transmitted. 1. Accidental disturbance such as noise or lightning surge 2. If the address transmission from the unit processor was not normally 2.
Page 84 Check code No ACK error 6607 (A7) Chart 1 of 4 Abnormal points and detection methods Causes and checkpoints Represents a common error detection 1. The previous address unit does not exist since An abnormality detected by the sending side controller when receiving the address switch was changed while in electric no ACK from the receiving side, though signal was once sent.
Page 85 Check code No ACK error 6607 (A7) Chart 2 of 4 Abnormal points and detection methods Causes and checkpoints The cause of displayed address and attribute is on the Fresh Master 1. While the indoor unit is operating with multi side.
Page 86 Check code No ACK error 6607 (A7) Chart 3 of 4 Note: ●Diagnosis of defects When the address of the outdoor unit is displayed as abnormal, the Make sure to turn the power OFF before connecting/disconnecting outdoor circuit board may be faulty. If the unit is not restored after any connectors, or replacing boards.
Page 87 Check code No ACK error 6607 (A7) Chart 4 of 4 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page. Apply the correct kind of transmission line, Is the correct kind of transmission then perform the procedure 1.
Page 88 Check code No response frame error 6608 (A8) Abnormal points and detection methods Causes and checkpoints If receiving no response command while already received ACK. 1. Continuous failure of transmission due to noise, etc The sending side searches the error in 30 seconds interval for 6 times 2.
Page 89 Check code MA communication receive error 6831, 6834 (E0/E4) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints Detected in remote controller or indoor unit: 1. Contact failure of remote controller wirings 2. Irregular Wiring When the main or sub remote controller cannot receive signal from (A wiring length, number of connecting remote indoor unit which has the "0"...
Page 90 Check code MA communication receive error 6831, 6834 (E3/E5) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards Diagnosis Remedy Continued from the previous page. Refer to the chapter "Electrical Work".
Page 91 Check code MA communication send error 6832 6833 (EF) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints Detected in remote controller or indoor unit. 1. There are 2 remote controllers set as main. 2. Malfunction of remote controller sending/receiving circuit 3.
Page 92 Check code MA communication send error 6832 6833 (EF) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards Diagnosis Remedy Continued from the previous page. Refer to the chapter "Electrical Work".
Page 93 Check code Total capacity error 7100 (EF) Abnormal points and detection methods Causes and checkpoints When the total capacity of connected indoor units exceeds the specified 1. The total of number on connected indoor unit model capacity (130% of the outdoor unit capacity), a check code <7100> is names exceeds the specified capacity level.
Page 94 Check code Capacity code error 7101 (EF) Abnormal points and detection methods Causes and checkpoints When a connected indoor unit is incompatible, a check code <7101> is The model name of connected indoor unit (model code) displayed. is read as incompatible. The connectable indoor units are: ·...
Page 95 Check code Connecting excessive number of units 7102 and branch boxes (EF) Abnormal points and detection methods Causes and checkpoints When the connected indoor unit exceeds the limit, a check code <7102> is Connecting more indoor units and branch boxes than displayed.
Page 96 Check code Address setting error 7105 (EF) Chart 1 of 2 Abnormal points and detection methods Causes and checkpoints The address setting of connected unit is wrong. There is a unit without correct address setting in the range specified in "7-5. SYSTEM CONTROL". ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Page 97 Check code Address setting error 7105 (EF) Chart 2 of 2 ●Diagnosis of defects Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy <M-NET RC (main)> Check whether the M-NET RC (main) address is set in 000, or in the range of 101 to 150.
Page 98 Check code Incompatible unit combination error 7130 (EF) Abnormal points and detection methods Causes and checkpoints When the connected indoor unit is not compatible with the outdoor unit, Connecting indoor unit(s) which is not authorized to the outdoor unit detects the error at startup. connect to the outdoor unit.
Page 99 8-2. THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY) Symptom Display of remote controller CAUSE Even the cooling (heating) "Cooling (Heating)" blinks The indoor unit cannot cool (Heat) if other indoor units are heating (Cooling). operation selection button is pressed, the indoor unit cannot be operated.
Page 100 8-3. INTERNAL SWITCH FUNCTION TABLE The black square (■) indicates a switch position. OCH668G...
Page 101 ■ The black square ( ) indicates a switch position. OCH668G...
Page 102 OCH668G...
Page 103 8-4. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR State (CN51) A Distant control board E Lamp power supply B Relay circuit F Procure locally C External output adapter (PAC-SA88HA-E) G Max. 10 m CN51 D Outdoor unit control board Error display lamp Compressor operation lamp X, Y: Relay (coil rating: ≤...
Page 104 8-5. HOW TO CHECK THE PARTS Parts name Checkpoints Thermistor (TH2) Disconnect the connector then measure the resistance with a multimeter. <HIC pipe> (At the ambient temperature 10 to 30°C) Thermistor (TH3) Normal Abnormal <Outdoor liquid pipe> Thermistor (TH4) 160 to 410 k" <Compressor>...
Page 105 Check method of DC fan motor (fan motor/outdoor multi controller circuit board) 1. Notes: · High voltage is applied to the connector (CNF1) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNF1) for the motor with the power supply on. (It causes trouble of the outdoor multi controller circuit board and fan motor.) 2.
Page 106 8-6. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <HIC pipe> (TH2) • Thermistor <Outdoor liquid pipe> (TH3) • Thermistor <Suction pipe> (TH6) • Thermistor <Ambient> (TH7) Thermistor R0 = 15 kΩ ± 3 % B constant = 3480 ±...
Page 107 <HIGH PRESSURE SENSOR> • Comparing the High Pressure Sensor Measurement and Gauge Pressure By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the high pressure sensor appears on the LED1 on the control board. The figure at left shows that the switches 1 through 4 are set to ON and 5 through 8 are set to OFF.
Page 108 <LOW PRESSURE SENSOR> • Comparing the Low Pressure Sensor Measurement and Gauge Pressure By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the low pressure sensor appears on the LED1 on the control board. The figure at left shows that the switches 1 through 4 are set to ON and 5 through 8 are set to OFF.
Page 109 8-7. TEST POINT DIAGRAM Outdoor multi controller circuit board <CAUTION> TEST POINT 1 is high voltage. CN51 External signal Model selection Pump down Test run Manual defrost Model selection output CN102 Connect to the M-NET power circuit board (CN2) Function selection CN40,CN41 Centralized control power Function selection...
Page 110 Outdoor power circuit board PUMY-SP112VKM(-BS) PUMY-SP125VKM(-BS) PUMY-SP140VKM(-BS) PUMY-SP112VKM-ET(-BS) PUMY-SP125VKM-ET(-BS) PUMY-SP140VKM-ET(-BS) PUMY-SP112VKM-ER(-BS) PUMY-SP125VKM-ER(-BS) PUMY-SP140VKM-ER(-BS) Brief Check of POWER MODULE If they are short-circuited, it means that they are broken. Measure the resistance in the following points (connectors, etc.). Connect to the outdoor multi controller 1.
Page 111 Outdoor power circuit board PUMY-SP112YKM(-BS) PUMY-SP125YKM(-BS) PUMY-SP140YKM(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP125YKM-ET(-BS) PUMY-SP140YKM-ET(-BS) PUMY-SP112YKM-ER(-BS) PUMY-SP125YKM-ER(-BS) PUMY-SP140YKM-ER(-BS) Brief Check of POWER MODULE If they are short-circuited, it means that they are broken. Measure the resistance in the following points (connectors, etc.). 1. Check of DIODE MODULE L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1 2.
Page 112 M-NET power circuit board Connect to the outdoor multi controller circuit board (CN102) 1–2: 24–30 VDC 3–4: 24–30 VDC Connect to the electrical parts box • Connect to the outdoor noise filter circuit board (CNAC1) (Y) • Connect to the outdoor power circuit board (CNAC1) (V) 1–3: 230 VAC OCH668G...
Page 113 Outdoor noise filter circuit board PUMY-SP112YKM(-BS) PUMY-SP125YKM(-BS) PUMY-SP140YKM(-BS) PUMY-SP112YKM-ET(-BS) PUMY-SP125YKM-ET(-BS) PUMY-SP140YKM-ET(-BS) PUMY-SP112YKM-ER(-BS) PUMY-SP125YKM-ER(-BS) PUMY-SP140YKM-ER(-BS) LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI2-LI3/LI3-LI1: 400 VAC input LI1-NI/LI2-NI/LI3-NI: 230 VAC input (Connect to the terminal block (TB1)) Connect to the electrical parts box CNAC1 230 VAC (Connect to the...
Page 114 8-8. OUTDOOR UNIT INFORMATION DISPLAY SW: setting 0..OFF 1..ON OCH668G...
Page 115 OCH668G...
Page 116 OCH668G...
Page 117 OCH668G...
Page 118 OCH668G...
Page 119 OCH668G...
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Page 121 OCH668G...
Page 122 ELECTRICAL WIRING This chapter provides an introduction to electrical wiring for the CITY MULTI series, together with notes concerning power wir- ing, wiring for control (transmission wires and remote controller wires), and the frequency converter. 9-1. OVERVIEW OF POWER WIRING Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water, etc.) when proceeding with the wiring and connections.
Page 123 <When power is supplied separately> PUMY-SP•VKM series ～ /N 220-230-240 V, 50 Hz ～ /N 220-230-240 V, 50 Hz ～ /N 220 V, 60 Hz ～ /N 220 V, 60 Hz S1/S2/S3 S1/S2/S3 PUMY-SP•YKM series S1/S2/S3 S1/S2/S3 S1/S2/S3 S1/S2/S3 3N～380-400-415 V, 50Hz L1/L2/L3/N 3N～380 V, 60 Hz A Switch (Breakers for Wiring and Current Leakage)
Page 124 9-2-2. Cross section area of Wire for Main Power and ON/OFF capacities <Outdoor unit> When power is supplied to outdoor unit and branch box separately Minimum Wire Cross-sectional area (mm²) Breaker for Wiring * Power Supply Breaker for Current Leakage Model Main Cable Ground...
Page 125 9-3. DESIGN FOR CONTROL WIRING Please note that the types and numbers of control wires needed by the CITY MULTI series depend on the remote con- trollers and whether they are linked with the system or not. 9-3-1. Selection number of control wires M-NET remote controller Remote controller used in system control operations.
Page 126 9-5. SYSTEM SWITCH SETTING In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the CITY MULTI series, each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor units, and remote controller must be set using their settings switches.
Page 127 9-7. METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY The electrical characteristics of connected indoor unit system for air conditioning systems, including the CITY MULTI series, depend on the arrangement of the indoor and outdoor units. First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company.
Page 128 REFRIGERANT PIPING TASKS 10-1. REFRIGERANT PIPING SYSTEM Line-Branch Method Connection Examples (Connecting to 4 Indoor Units) Outdoor Unit First Branch Indoor unit Total Piping Length A+B+C+a+b+c+d [ 120 m Permissible Farthest Piping Length A+B+C+d [ 70 m Length Farthest Piping Length After First Branch B+C+d [ 50 m Permissible High/ High/Low Difference in Indoor/Outdoor Section...
Page 129 Header-Branch Method Connection Examples (Connecting to 4 Indoor Units) Outdoor Unit First Branch Indoor unit Total Piping Length A+a+b+c+d [ 120 m Permissible Farthest Piping Length A+d [ 70 m Length Farthest Piping Length After First Branch R [ 50 m Permissible High/ High/Low Difference in Indoor/Outdoor Section H [ 50 m (If the outdoor unit is lower, H [ 30 m)
Page 130 Note: Pipe re-branching after the header branching is not possible. Method of Combined Branching of Lines and Headers Connection Examples (Connecting to 5 Indoor Units) Outdoor unit First branching (branching joint) Branching joint Indoor unit Branching header Blind caps Total Piping Length A+B+C+a+b+c+d+e [ 120 m Permissible Farthest Piping Length...
Page 131 10-2. REFRIGERANT PIPING SYSTEM (WHEN USING BRANCH BOX) AOutdoor unit BBranching joint CBranch box Branch box Method DIndoor unit Connection Examples (Connecting to 8 Indoor Units) Total piping length A + B + C + a + b + c + d + e + f + g + h [ 120 m Farthest piping length (L) A + C + h [ 80 m ( A + C [ 55 m, h [ 25 m) Permissible...
Page 132 A Outdoor Unit B First joint C Branch header D Branch box E CITY MULTI Indoor unit F M, S, P series Indoor unit Mixed Method Connection Examples (Connecting to 1 Branch box) Total piping length A+B+C+D+E+a+b+c+d+e+f+g+h+i+j [ 120 m Farthest piping length (L1) A+E+a or A+B+C+e [ 70 m Farthest piping length.
Page 133 A Outdoor Unit B First joint C Branch header D Branch box E CITY MULTI Indoor unit F M, S, P series Indoor unit Mixed Method Connection Examples (Connecting to 2 Branch boxes) Total piping length A+B+C+D+E+a+b+c+d+e+f+g+h+i+j+k [ 120 m Farthest piping length (L1) A+E+a [ 70 m Farthest piping length.
Page 134 10-3. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE 10-3-1. Introduction R410A refrigerant of this air conditioner is non-toxic and non-flammable but leaking of large amount from an indoor unit into the room where the unit is installed may be deleterious. To prevent possible injury, the rooms should be large enough to keep the R410A concentration specified by ISO 5149-1 as follows.
Page 135 11 DISASSEMBLY PROCEDURE : Indicates the visible parts in the photos/figures. : Indicates the invisible parts in the photos/figures. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the service panel and the top panel Photo 1 Top panel fixing screws Top panel (1) Remove 3 service panel fixing screws (5 × 12), and slide the hook on the right downward to remove the Service service panel.
Page 136 OPERATING PROCEDURE PHOTOS/FIGURES 4. Disassembling the electrical parts box (VKM type) Multi controller circuit Photo 5 M-NET power board* board (MULTI.B.) (M-NET P.B.) (1) Disconnect all the connectors on the multi controller circuit board. (2) Remove 2 screws 1 which fix the plate holding the multi controller circuit board and the electrical parts box.
Page 137 OPERATING PROCEDURE PHOTOS/FIGURES 6.Removing the thermistor <HIC> (TH2) and the Photo 10 thermistor <Compressor> (TH4) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Disconnect the following connectors on the controller circuit board in the electrical parts box. •...
Page 138 OPERATING PROCEDURE PHOTOS/FIGURES Thermistor <Ambient> (TH7) 8. Removing LEV coil Photo 12 [LEV-A] (1) Remove the service panel. (See Photo 1) (2) Disconnect the connector CNL VA (WH) on the multi controller circuit board in the electrical parts box. (3) Remove the LEV coil by sliding the coil upward. (See Photo 13) [LEV-B] (1) Remove the service panel.
Page 139 OPERATING PROCEDURE PHOTOS/FIGURES Photo 15 10. Removing the 4-way valve coil (21S4) (1) Remove the service panel. (See Photo 1) 4-way valve coil (21S4) 4-way valve [Removing the 4-way valve coil] (2) Remove 4-way valve coil fixing screw (M5 × 7). (3) Remove the 4-way valve coil by sliding the coil toward you.
Page 140 OPERATING PROCEDURE PHOTOS/FIGURES 12. Removing the solenoid valve coil (SV1) and the solenoid valve Photo 16 (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Disconnect the connector SV1 (Gray) on the multi High pressure controller circuit board in the electrical parts box.
Page 141 OPERATING PROCEDURE PHOTOS/FIGURES 15. Removing the compressor (MC) Photo 18 (1) Remove the service panel. (See Photo 1.) (2) Remove the top panel. (See Photo 1.) (3) Remove the electrical parts box. (Refer to procedure 3) (4) Remove the valve bed by removing the following screws: •...
Page 142 REMOTE CONTROLLER 12-1. REMOTE CONTROLLER FUNCTIONS <PAR-40MAA> Controller interface The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.
Page 143 Display The main display can be displayed in two different modes: ˝Full˝ and ˝Basic˝. The initial setting is ˝Full˝. To switch to the ˝Basic˝ mode, change the setting on the Main display setting. (Refer to operation manual included with remote controller.) <Full mode>...
Page 144 Menu structure Main menu Press the button. Move the cursor to the desired item with the buttons, and press the button. Operation Vane · Louver · Vent. (Lossnay) High power Comfort Manual vane angle 3D i-See sensor Timer menu Timer ON/OFF timer Auto-OFF timer Weekly timer...
Page 145 Continue from the previous page. Maintenance menu Error information Filter information Cleaning Auto descending panel Descending operation Descending adjustment Service menu Test run menu Test run Drain pump test run Maintenance information Model name input Serial No. input Dealer information input Initialize maintenance info.
Page 146 Main menu list Main Setting and display items Setting details menu Operation Vane · Louver · Vent. Use to set the vane angle. (Lossnay) • Select a desired vane setting. Use to turn ON/OFF the louver. • Select a desired setting from ˝ON˝ and ˝OFF.˝ Use to set the amount of ventilation.
Page 147 Main Setting and display items Setting details menu Initial Basic Main/Sub When connecting 2 remote controllers, one of them needs to be designated as setting setting a sub controller. Clock Use to set the current time. Daylight Set the daylight saving time. saving time Administrator The administrator password is required to make the settings for the following...
Page 148 <PAR-SL97A-E> Controller interface Transmission area Transmission indicator Remote controller display Timer indicator *For explanation purposes, all of the items that appear in the display are shown. *All items are displayed when the Reset button is pressed. Operation areas ON/OFF button Temperature setting buttons Fan Speed button (Changes fan speed) Timer Off button...
Page 149 <PAR-SL100A-E> Controller interface Transmission area Remote controller display Set Temperature buttons OFF/ON button Mode button (Changes operation mode) Fan Speed button (Changes fan speed) Airflow button (Changes up/ i-see button* down airflow direction) Timer ON button Menu button Timer OFF button SET/SEND button Weekly timer ON/OFF button* CANCEL button...
Page 150 <PAR-U02MEDA> Controller interface ▌1 Occupancy Sensor The occupancy sensor detects vacancy for energy saving control. ▌2 Brightness Sensor The brightness sensor detects the brightness of the room for energy saving control. ▌3 Temperature & Humidity Sensor The sensor detects the room temperature and the relative humidity. ▌4 LED Indicator The LED indicator indicates the operation status in different colors.
Page 151 12-2. ERROR INFORMATION When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer. 1. Check code, error unit, refrigerant address, date and time of occur- Error information rence, model name, and serial number will appear. Error code The model name and serial number will appear only if the informa- Error unit...
Page 152 • Checking the error information While no errors are occurring, page 2/2 of the error information can be Maintenance menu viewed by selecting ˝Error information˝ from the Maintenance menu. Error information Filter information Errors cannot be reset from this screen. Cleaning Main menu: Cursor...
Page 153 12-3. SERVICE MENU Maintenance password is required 1. Select ˝Service˝ from the Main menu, and press the [ ] button. Main Main menu *At the main display, the menu button and select ˝Service˝ to make Service the maintenance setting. 2. When the Service menu is selected, a window will appear asking for the pass- Service menu word.
Page 154 12-4. TEST RUN 12-4-1. PAR-40MAA 1. Select ˝Service˝ from the Main menu, and press the [ ] button. Test run Input maintenance info. Settings Check Others Select ˝Test run˝ with the F1 or F2 button, and press the [ ] button. 2.
Page 155 12-4-2. PAR-SL97A-E Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500 V Megger and check that it is equal to or greater than 1.0 MΩ. TEST RUN 1. Turn on the main power to the unit. TEST RUN 2.
Page 156 12-4-4. PAR-U02MEDA Test run [MON] 10:45 Test run Fan speed Air direction Address Remain 2:00 　＞　＞ Pipe 　＞　＞ 9.0°C 　＞　＞　＞　＞ Swing Auto Louver LOSSNAY 　＞　＞　...
Page 157 12-5. FUNCTION SETTING 12-5-1. PAR-40MAA Settings menu 1. Select ˝Service˝ from the Main menu, and press the [ ] button. Function setting Lossnay Select ˝Setting˝ from the Service menu, and press the [ ] button. Service menu: Cursor Select ˝Function setting˝, and press the [ ] button.
Page 158 12-5-2. PAR-SL97A-E Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refriger- ant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller. [Flow of function selection procedure] Flow of function selection procedure The flow of the function selection procedure is shown below.
Page 159 12-5-3. PAR-SL100A-E 1. Going to the function select mode Press the button between of 5 seconds. (Start this operation from the status of remote controller display turned off.) [CHECK] is lit and ˝00˝ blinks. (Fig. 1) Press the button to set the ˝50˝. Direct the wireless remote controller toward the receiver of the indoor unit and press the button.
Page 160 12-6. ERROR HISTORY 1. Select ˝Service˝ from the Main menu, and press the [ ] button. Test run Input maintenance info. Settings Check Others Select ˝Check˝ with the F1 or F2 button, and press the [ button. 2. Select ˝Error history˝ with the F1 or F2 button, and press Check menu the [ ] button.
Page 161 12-7. SELF-DIAGNOSIS 12-7-1. PAR-40MAA 1. Select ˝Service˝ from the Main menu, and press the [ ] button. Diagnosis Self check Select ˝Check˝ from the Service menu, Remote controller check and press the [ ] button. Service menu: Select ˝Diagnosis˝ from the Check menu, Cursor and press the [ ] button.
Page 162 12-7-2. PAR-SL97A-E When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. < Malfunction-diagnosis method at maintenance service> Refrigerant [Procedure] address display 1. Press the CHECK button twice. CHECK •...
Page 163 12-8. REMOTE CONTROLLER CHECK If operations cannot be completed with the remote controller, diagnose the remote controller with this function. 1. Select ˝Service˝ from the Main menu, Diagnosis and press the [ ] button. Self check Remote controller check Select ˝Check˝ from the Service menu, Service menu: and press the [ ] button.
Page 164 12-9. SPECIAL FUNCTION OPERATION SETTING <PAR-U02MEDA> *M-NET remote controller cannot be connected with a refrigerant system which includes branch box. It is necessary to perform “group settings” and “Interlocked LOSSNAY” at making group settings of different refrigerant systems (multiple outdoor unit). (A) Group settings: Enter the indoor unit controlled by the remote controller, check the content of entries, and clear entries, etc.
Page 165 (a) Group setting Use this screen to register the indoor units and the AHC to be controlled from the controller. 1. Select an indoor unit or an AHC address in the [Address] field. [Group setting] The number of units that can be registered. Indoor unit: 16 units maximum Address AHC: 1 unit maximum...
Page 166 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN cCopyright 2017 MITSUBISHI ELECTRIC CORPORATION Issued: Nov. 2020 No. OCH668 REVISED EDITION-G Issued: Aug. 2020 No. OCH668 REVISED EDITION-F Issued: Mar. 2020 No. OCH668 REVISED EDITION-E Issued: Jul. 2019 No. OCH668 REVISED EDITION-D Issued: Nov.

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