Samsung MH020FPEA Service Manual page 40

Outdoor Unit(cont.)
Display
Outdoor unit EEV open error (self diagnosis)
Outdoor unit EEV close error (self diagnosis)
High temperature (over 30˚C) of outdoor as heating mode
Low temperature (under -5˚C) of indoor as cooling mode
Wrong connection between communication and power cable
Inverter Compressor starting failure (5 times)
Compressor trip by input current limit control
Compressor trip by OLP temperature limit control
Compressor peak current protection
Compressor overload protection by current
DC-link voltage error (under 150V or over 410V)
(This error might display for a few seconds after power cut)
Compressor rotation error
Current sensor error
DC-link voltage sensor error
Compressor overload protection
EEPROM error
AC line zero-crossing detection circuit error
NO GAS error (self diagnosis)
Samsung Electronics
Explanation
Alignment and Adjustments
Main checking Point
EEV
EEV
Operation mode
Operation mode
Wiring indoor and outdoor
Service valve, EEV,
Compressor terminal,
Compressor wire,
Outdoor controller
EEV, Gas over charge,
Outdoor controller
Outdoor fan, Compressor,
Outdoor controller
Outdoor fan, Compressor,
Compressor wire,
Outdoor controller
Outdoor fan, EEV,
Service valve,
Outdoor controller
Power voltage,
Outdoor controller
Compressor terminal,
Compressor wire,
Outdoor controller
Outdoor controller
Outdoor controller
Outdoor fan, EEV,
Service valve,
Outdoor controller
Outdoor controller
Outdoor controller,
Terminal Block
Piping (gas leak)
3-6