Table of Contents
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40MPHA
High Wall Ductless System
Sizes 09 to 12
TABLE OF CONTENTS
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SAFETY CONSIDERATIONS
Installing, starting up, and servicing air−conditioning equipment
can be hazardous due to system pressures, electrical components,
and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should
install, start−up, and service this equipment.
Untrained personnel can perform basic maintenance functions such
as cleaning coils. All other operations should be performed by
trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep
quenching cloth and fire extinguisher nearby when brazing. Use
care in handling, rigging, and setting bulky equipment.
Read this manual thoroughly and follow all warnings or cautions
included in literature and attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety−alert symbol
When you see this symbol on the unit and in instructions or manuals,
be alert to the potential for personal injury. Understand these signal
words: DANGER, WARNING, and CAUTION.
Service Manual
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These words are used with the safety−alert symbol. DANGER
identifies the most serious hazards which will result in severe personal
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injury or death. WARNING signifies hazards which could result in
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personal injury or death. CAUTION is used to identify unsafe
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practices which may result in minor personal injury or product and
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property damage. NOTE is used to highlight suggestions which will
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result in enhanced installation, reliability, or operation.
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ELECTRICAL SHOCK HAZARD
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Failure to follow this warning could result in personal
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injury or death.
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Before installing, modifying, or servicing system, main
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electrical disconnect switch must be in the OFF
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position. There may be more than 1 disconnect switch.
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Lock out and tag switch with a suitable warning label.
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36
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EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe
in the ground. If any section of pipe is buried, there must be
a 6 in. (152 mm) vertical rise to the valve connections on
the outdoor units. If more than the recommended length is
buried, refrigerant may migrate to the cooler buried section
during extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start−up.
INTRODUCTION
This service manual provides the necessary information to service,
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repair, and maintain the indoor units. Section 2 of this manual has an
appendix with data required to perform troubleshooting. Use the Table
of Contents to locate a desired topic.
WARNING
WARNING
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.
CAUTION
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Table of Contents
Troubleshooting
Related Manuals for Carrier 40MPHA
Summary of Contents for Carrier 40MPHA
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Page 1: Table Of Contents
40MPHA High Wall Ductless System Sizes 09 to 12 Service Manual TABLE OF CONTENTS These words are used with the safety−alert symbol. DANGER identifies the most serious hazards which will result in severe personal PAGE injury or death. WARNING signifies hazards which could result in SAFETY CONSIDERATIONS . -
Page 2: Model/Serial Number Nomenclatures
MODEL/SERIAL NUMBER NOMENCLATURES Table 1—Unit Sizes SYSTEM TONS VOLTAGE/PH/HZ INDOOR MODEL 40MPHAQ09XA3 208-230/1/60 40MPHAQ12XA3 INDOOR UNIT 40 = FAN COIL UNIT VOLTAGE 3 = 208/230-1-60 MP = MODEL A = VARIATION SYSTEM TYPE H = HIGH WALL X = NOT USED MAJOR SERIES INDOOR FAN COIL TYPE NOMINAL CAPACITY... -
Page 3: Specifications
SPECIFICATIONS Table 2—Specifications HEAT PUMP SIZE System Indoor Model 40MPHAQ09XA3 40MPHAQ12XA3 Voltage, Phase, Cycle V/Ph/Hz 208/230-1-60 208/230-1-60 Electrical Power Supply Indoor unit powered from outdoor unit Wireless Remote Controller (° F/° C Convertible) Standard Standard Controls Wired Remote Controller (° F/° C Convertible) Optional Optional Cooling Indoor DB Min - Max... -
Page 4: Dimensions
DIMENSIONS Table 4—Indoor Unit Dimensions HIGH WALL UNIT SIZE Voltage (208/230V) (208/230V) Height In. (mm) 11.7 (298) 11.7 (298) Width In. (mm) 35.2 (895) 35.2 (895) Depth In. (mm) 9.8 (248) 9.8 (248) Weight-Net Lbs (kg) 37.48 (17) 37.48 (17) Piping Drain Hose Ø0.625"(16) L=25.20"(640) -
Page 5: Clearances
CLEARANCES CEILING 5.9in. (15cm) min. 4.75 in 4.75 in (12 cm) (12 cm) min. min. 6 ft (1.8m) FLOOR Fig. 2 – Indoor Unit Clearance NOTE: The top clearance recommended for proper return airflow is 5.9in (15cm). Reduction of this clearance may decrease the performance of these units. -
Page 6: Electrical Data
ELECTRICAL DATA Table 5—Electrical Data Indoor High Wall HIGH WALL INDOOR FAN MAX FUSE CB AMP UNIT SIZE V-Ph-Hz 0.23 0.027 Refer to outdoor unit installation instructions – 208/230-1-60 Indoor unit powered by the outdoor unit 0.23 0.027 *Permissible limits of the voltage range at which the unit will operate satisfactorily. LEGEND FLA - Full Load Amps WIRING... -
Page 7: Wiring Diagram
WIRING DIAGRAM INDOOR INDOOR WIRING DIAGRAM CN20 P1_1 L-OUT PIPE TEMPERATURE SENSOR MAIN BOARD BLUE(BLACK) L-IN YELLOW N-IN CN10 CN32 L2 S INDOOR UNIT CN40 CN43 MULTI-FUNCTION CONTROL BOARD OUTDOOR UNIT CN45 CN42 CN41 DISPLAY BOARD CN46 X Y E 12V/5V Moving Sensor Humidity Sensor To Remote Alarm... -
Page 8: Refrigeration Cycle Diagram
REFRIGERATION CYCLE DIAGRAM INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2−WAY VALVE CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) T1 Room temp. sensor T2 Evaporator temp. sensor GAS SIDE 4−WAY VALVE 3−WAY VALVE ACCUMULATOR COOLING COMPRESSOR HEATING Fig. -
Page 9: Refrigerant Lines
REFRIGERANT LINES IMPORTANT: Both refrigerant lines must be insulated separately. Table 2 lists the pipe sizes for the indoor unit. Refer to the outdoor unit installation instructions for other allowed piping lengths and refrigerant information. SYSTEM EVACUATION AND Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of CHARGING pulling a vacuum of 500 microns and a vacuum gage capable of... -
Page 10: Operation Modes And Functions
OPERATION MODES AND FUNCTIONS Abbreviation Display Function Table 7—Unit Element Abbreviations Unit Display Functions Abbreviation Element Indoor room temperature Evaporator Coil temperature Condenser Coil temperature Outdoor ambient temperature Adjusted setting temperature Fig. 10 – Unit Display Functions Compressor discharge temperature Safety Features Table 8—Unit Function Displays Compressor Three−Minute Delay at Restart... -
Page 11: Fan Mode
FAN Mode When the FAN mode is activated: Indoor Fan Control 1 In the COOLING mode, the indoor fan operates The outdoor fan and compressor stop. continuously. The fan speed can be set to 1%−100%, or Temperature control is disabled and the indoor room AUTO. -
Page 12: Heating Mode
HEATING Mode Compressor Control DEFROSTING Mode 1 Reach the configured temperature: The unit enters defrosting mode according to changes in the temperature value of T3, T4 as well as the If the following conditions are satisfied, the compressor compressor running time. ceases operation. -
Page 13: Forced Operation Function
Forced Operation Function Auto−Restart Function Forced COOLING Mode: The indoor unit has an auto−restart module that allows the unit to restart automatically. The module The compressor and outdoor fan continue to run and the indoor fan automatically stores the current settings and, in the case runs at rated speed. -
Page 14: Intelligent Eye
Silence Information Inquiry Press SILENCE on the remote controller to enable the SILENCE To enter information inquiry status, complete the following function. While this function is active, the indoor unit will run at procedure within ten seconds: faint breeze (1% fan speed), which reduces noise to the lowest Press LED 3 times. -
Page 15: Troubleshooting
TROUBLESHOOTING Safety WARNING UNIT DAMAGE HAZARD Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Fig. 11 – Electrolytic Capacitors For other models, please connect discharge resistance (approximately 100 40W) or a soldering iron (plug) between the +, −... - Page 16 TROUBLESHOOTING (CONT) Error Display (Indoor Unit) When the indoor unit encounters a recognized error, the indicator light flashes in a corresponding series, the timer display may turn on or begin flashing, and an error code displays. These error codes are described in Table 10. Table 10—Error Codes Display Error Information...
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Page 17: Error Diagnosis And Troubleshooting
ERROR DIAGNOSIS AND TROUBLESHOOTING WITHOUT ERROR CODE WARNING UNIT DAMAGE HAZARD Be sure to turn off unit before any maintenance to prevent damage or injury. Table 11—Remote Maintenance Remote Electrical Circuit Refrigerant Circuit Others Maintenance Loose The ambient SILENCE Air inlet or The setting temp Frosting hold... - Page 18 ERROR DIAGNOSIS AND TROUBLESHOOTING WITHOUT ERROR CODE (CONT) Table 12—Field Maintenance Field Maintenance Electrical Circuit Shorted Faulty Wrong setting Faulty Faulty Blown Safety Shorted Faulty Shorted or Shorted or Possible causes Power Loose thermostat/ place of Faulty magnetic magnetic fuse or device or open stepping...
- Page 19 ERROR DIAGNOSIS AND TROUBLESHOOTING WITHOUT ERROR CODE (CONT) Table 13—Field Maintenance (Con’t) Field Maintenance Refrigerant Circuit Insufficient Air or non- Expansion Leaking Dirty or Short Broken Power Restricted Dirty condensable High temp. Insufficient Expansion valve or power partially cycling of compressor installation Possible causes...
- Page 20 ERROR DIAGNOSIS AND TROUBLESHOOTING WITHOUT ERROR CODE (CONT) Table 14—Field Maintenance (Con’t) Field Maintenance Others Contact of piping with other Possible causes of trouble Heavy load condition Loosen hold down bolts and/or screws Shipping plates remain attached Poor choices of capacity piping or external plate Unit will not start Compressor will not start however the fan...
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Page 21: Quick Maintenance By Error Code
QUICK MAINTENANCE BY ERROR CODE If you do not have the time to test whether specific parts are faulty, you can directly change the required parts according the error code. You can find the parts to replace by error code in Tables 15 and 16. Table 15—Error Codes Part Requiring Replacement Error Code... -
Page 22: Troubleshooting By Error Code
TROUBLESHOOTING BY ERROR CODE Common Check Procedures Temperature Sensor Check Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temp. (T1) sensor, Indoor coil temp. (T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(Tp) sensor. -
Page 23: Diagnosis And Solution
DIAGNOSIS AND SOLUTION E0/F4/EA (EEPROM Parameter Error) Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: Indoor PCB Outdoor PCB Troubleshooting and Repair: Shut off the power supply and turn it on 2 minutes later. - Page 24 DIAGNOSIS AND SOLUTION (CONT) E1 (Indoor and Outdoor Unit Communication Error) Description: The indoor unit has not received feedback from the outdoor unit for 150 seconds, four consecutive times. Recommended parts to prepare: Indoor PCB Outdoor PCB Reactor Troubleshooting and Repair: Power off , then restart the unit after 2 minutes.
- Page 25 DIAGNOSIS AND SOLUTION (CONT) E1 (Indoor and Outdoor Unit Communication Error) (Cont) Remarks: Use a multimeter to test the DC voltage between the outdoor unit’s 2 port and 3 port. The red pin of multimeter connects with the 2 port while the black pin is for 3 port. When the air conditioner is normal running, the voltage is moving alternately as positive values and negative values.
- Page 26 DIAGNOSIS AND SOLUTION (CONT) E3/F5 (Fan speed is operating outside of the Normal Range) Description: When the indoor fan speed maintains a low speed (ex. 300RPM) or a speed that’s too high (ex.1500RPM) for a certain time, the unit stops and the LED displays the failure (E3). When the outdoor fan speed registers below 200RPM or over 1500RPM for an extended period of time, the unit stops and the LED displays the failure (F5).
- Page 27 Index 1. Indoor or Outdoor DC Fan Motor (control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1−pin3, pin4−pin3 in the fan motor connector. If the value of the voltage is not in the range shown in Table 19, the PCB must has problems and need to be replaced. DC motor voltage input and output (voltage: 220−240V~): Table 19—Voltage Color...
- Page 28 DIAGNOSIS AND SOLUTION (CONT) EF (Intelligent Eye Module Error Diagnosis and Solution) Description: If the intelligent eye module malfunctions, the LED displays the failure. Recommended parts to prepare: Intelligent Eye Troubleshooting and Repair: Power off , then restart the unit 2 minutes later. Is it still displaying The unit operates normally .
- Page 29 DIAGNOSIS AND SOLUTION (CONT) P1 (Over voltage or too low voltage protection diagnosis and solution) Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit. Recommended parts to prepare: Power supply issues System leakage or blockage Faulty PCB Troubleshooting and Repair: Check the power supply...
- Page 30 DIAGNOSIS AND SOLUTION (CONT) P2 (High temperature protection of IPM module diagnosis and solution) Description: If the temperature of IPM module is higher than limited value, the LED displays this failure code. Recommended parts to prepare: Faulty PCB Connection problems Troubleshooting and Repair: Check the fastening screws on the PCB and IPM radiator.
- Page 31 DIAGNOSIS AND SOLUTION (CONT) P4 (Inverter compressor drive error diagnosis and solution) Description: If the temperature of IPM module is higher than limited value, the LED displays this failure code. Recommended parts to prepare: Wiring mistake PM malfunction Outdoor fan assembly faulty Compressor malfunction Outdoor PCB faulty Troubleshooting and Repair:...
- Page 32 DIAGNOSIS AND SOLUTION (CONT) E4/E5/F1/F2/F3 (Open circuit or short circuit of temperature sensor diagnosis and solution) Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure. Recommended parts to prepare: Wiring mistake Faulty sensor Faulty PCB Troubleshooting and Repair:...
- Page 33 DIAGNOSIS AND SOLUTION (CONT) Eb (Communication error between the Indoor PCB and Display Board) Description: Indoor PCB does not receive feedback from the display board. Recommended parts to prepare: Wiring mistake PCB faulty Display board malfunction Troubleshooting and Repair: Power off , then restart the unit 2 minutes later.
- Page 34 DIAGNOSIS AND SOLUTION (CONT) F0 (Overload current protection diagnosis and solution) Description: An abnormal current rise is detected by checking the specified current detection circuit. Recommended parts to prepare: Power supply problems System blockage Faulty PCB Wiring mistake Compressor malfunction Troubleshooting and Repair: Check the power supply Is it in working order ?
- Page 35 DIAGNOSIS AND SOLUTION (CONT) P0 (IPM malfunction or IGBT over−strong current protection diagnosis and solution) Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the display LED displays “P0” and the air conditioner turns off. Recommended parts to prepare: Wiring mistake IPM malfunction...
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Page 36: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS Indoor Unit (Front Panel) Procedure Illustration 1) Hold the front panel by the tabs on Front Panel both sides and lift it (see CJ_OP_ INV_001). CJ_OP_INV_001 2) Push up the bottom of the air filter while pressing the buttom of the middle parts, and then pull the air filter out (downwards) (see CJ_OP_ INV_002). - Page 37 DISASSEMBLY INSTRUCTIONS (CONT) Indoor Unit (Front Panel) (Cont) Procedure Illustration 3) Open the horizontal louver and push the hook towards the right to open (see CJ_OP_INV_003). Horizontal Louver Hook CJ_OP_INV_003 4) Bend the horizontal louver lightly with both hands to loosen the hooks, then remove the horizontal louver (see CJ_OP_INV_004).
- Page 38 DISASSEMBLY INSTRUCTIONS (CONT) Indoor Unit (Front Panel) (Cont) Procedure Illustration 5) Remove 1 screw and then remove the electrical cover (see CJ_OP_INV_005). 6) Disconnect the two connectors for the display board (see CJ_OP_INV_005) . CJ_OP_INV_005 7) Slid the front panel side to side to release each axis (see CJ_OP_INV_006 ) CJ_OP_INV_006 8) Remove one screw and rotate the...
- Page 39 DISASSEMBLY INSTRUCTIONS (CONT) Electrical Parts NOTE: Remove the front panel (refer front panel removal steps) before disassembling electrical parts. Procedure Illustration 1) Cut the ribbon with a shear, then pull Ground Screws out the coil temperature sensor (T2) (see CJ_OP_INV_010). T2 Sensor 2) Remove the two screws used for the ground connection (see CJ_OP_...
- Page 40 DISASSEMBLY INSTRUCTIONS (CONT) Electrical Parts (Cont) Procedure Illustration 5) Disconnect the wires. Then remove the electronic main box (CJ_OP_INV_011- 6) Pull out the Electrical control box along the direction indicated in the image. to remove it (CJ_OP_INV_011-2). Main Board Electronic Box CJ_OP_INV_012 Pipe Temperature Sensor 7) The connector of each port is indicated...
- Page 41 DISASSEMBLY INSTRUCTIONS (CONT) Evaporator NOTE: Remove the front panel and electrical parts (refer to front panel and electrical parts removal steps) before disassembling evaporator. Procedure Illustration 1) Disassemble the pipe holder located at the rear of the unit (see CJ_OP_INV_014). Pipe Holder CJ_OP_INV_014 2) Remove the 3 screws on the evaporator...
- Page 42 DISASSEMBLY INSTRUCTIONS (CONT) Evaporator (Cont) Procedure Illustration 4) Remove 1 screw on the evaporator located at the top of the evaporator. (see CJ_OP_ INV_017). CJ_OP_INV_017 Evaporator 5) Pull out the evaporator (see CJ_OP_ INV_017). CJ_OP_INV_017...
- Page 43 DISASSEMBLY INSTRUCTIONS (CONT) Fan Motor and Fan NOTE: Remove the front panel, electrical parts and evaporator (refer to front panel, electrical parts, and evaporator removal steps) before disassembling fan motor and fan. Procedure Illustration 1) Remove the two screws and remove the fixing board of the fan motor (see CJ_OP_ INV_018).
- Page 44 DISASSEMBLY INSTRUCTIONS (CONT) Fan Motor and Fan (Cont) Procedure Illustration 3) Remove the fixing screw (see CJ_OP_ INV_020). 4) Pull out the fan motor and fan assembly from the side. Fixing Screw CJ_OP_INV_021 Step Motor NOTE: Remove the front panel and electrical parts (refer to the front panel, electrical parts removal steps) before disassembling step motor. Procedure Illustration 1) Remove the two screws, then remove the...
- Page 45 DISASSEMBLY INSTRUCTIONS (CONT) Intelligent Eye NOTE: Remove the front panel and electrical parts (refer to the front panel, electrical parts, evaporator and fan motor and fan removal steps) before disassembling the step motor. Procedure Illustration 1) Remove the 1 screw, then remove the intelligent eye.
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Page 46: Appendices
APPENDICES Appendix 1 Table 20—Temperature Sensor Resistance Value Table for T1, T2, T3, T4 ( C−−K) K Ohm ° C ° F K Ohm ° C ° F K Ohm ° C ° F K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249... - Page 47 APPENDICES (CONT) Appendix 2 Table 21—Temperature Sensor Resistance Value Table for T1,T2,T3,T4 ( C−−K) ° C ° F K Ohm ° C ° F K Ohm ° C ° F K Ohm ° C ° F K Ohm 542.7 68.66 13.59 3.702 511.9...
- Page 48 287.6 177.8 233.6 289.4 Copyright 2017 Carrier Corporation. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 09/17 Catalog No.40MPHA-01SM Replaces: NEW Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.