Model reference
Samsung MH035FWEA
Air Conditioner
1 document45 error codes7 service modes
Available documentation
Service Manual
- Multi Air Conditioner Service Manual208 pg
MyPros+ Max
Diagnose your Samsung MH035FWEA.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
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Error codes (45)
CodeMeaning
E101Communication errorE121Communication errorE154Indoor unit room temperature sensor error (Open/Short).E162Indoor unit heat exchanger in temperature sensor error (Open/Short).E163Indoor unit heat exchanger out temperature sensor error (Open/Short).E166Indoor unit heat exchanger in temperature sensor detached.E167Indoor unit heat exchanger out temperature sensor detached.E168Indoor unit heat exchanger in and out temperature sensors both detached.E170Indoor unit fan motor malfunction.E175More than 2 indoor units cool and heat simultaneously (mixed operation error).E185EEPROM error on indoor unit.E186Option code setting error.E201Communication errorE202Communication error between 2 microcontrollers on the outdoor PCB.E251Outdoor temperature sensor error (Short/Open)E252Condenser temperature sensor error (Short/Open)E253Condenser temperature sensor detached.E254Compressor discharge sensor error (Short/Open)E255Compressor discharge sensor detached.E256Compressor OLP sensor error (Short/Open)E401Indoor unit heat exchanger freezing and compressor stop (cooling mode).E404Outdoor unit overload and compressor stop (protection control in heating mode).E416Outdoor unit high discharge temperature and compressor stop (protection control…E441Outdoor unit EEV open error (self diagnosis).E442Outdoor unit EEV close error (self diagnosis).E460Wrong connection between communication and power cable.E464Cable miss-wiring between indoor and outdoor units.E465The number of indoor units mismatched with outdoor unit SW01 setting.E471High temperature (over 30°C) of outdoor in heating mode.E472Low temperature (under -5°C) of indoor in cooling mode.View all 45 error codes
E473Inverter compressor starting failure (5 times).E474Compressor trip by input current limit control.E475Compressor trip by OLP temperature limit control.E476Compressor peak current protection.E477Compressor overload protection by current.E478DC-link voltage error (under 150V or over 410V)E479Compressor rotation error.E480Current sensor error.E481DC-link voltage sensor error.E482Compressor overload protection.E485EEPROM error on outdoor controller.E486AC line zero-crossing detection circuit error.E497NO GAS error (self diagnosis)E556Compressor discharge sensor error (Short/Open) reported to indoor unit.E557Outdoor unit error reported to indoor unit.
Service modes (7)
- Cool Mode Try-Run (Test Mode)On outdoor PCB display, press K2 (Function button) twice
- Heat Mode Try-Run (Test Mode)On outdoor PCB display, press K2 (Function button) once
- Option Setup Mode1. Remove batteries from remote control. 2. Press and hold both temperature UP and DOWN buttons…
- Pipe Check ModeOn outdoor PCB display, press K2 (Function button) four times
- Pump Down ModeOn outdoor PCB display, press K2 (Function button) three times
- Refrigerant Charging ModeOn outdoor PCB display, press K1 (Test button) once
- View Mode (Sensor Data Display)On outdoor PCB display, press K4 (View mode change button) repeatedly to cycle through data displays
Full entry steps, exit procedures, and test sequences are available in Max.
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