Error Codes - Samsung MWR-WW10N User Manual

Error codes

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101 Hydro Unit / Outdoor Unit communication connection error
Short- or open-circuit error of the room temperature sensor of the
120 Zone 2 indoor unit (detected only when the room thermostat is
used)
Short- or open-circuit error of the room temperature sensor of the
121
Zone 1 indoor unit (detected only when the room thermostat is used)
122 EVA Inlet temp sensor SHORT or OPEN
123 EVA Outlet temp sensor SHORT or OPEN
162 EEPROM Error
Error of Terminal Block's Thermal Fuse(Open)
201 Hydro Unit / Outdoor Unit communication error(Matching error)
202 Hydro Unit / Outdoor Unit communication error(3 min)
203 Communication error between INVERTER and MAIN MICOM (4 min)
221 Outdoor Unit air temperature sensor error
231 Condenser temperature sensor error
251 Discharge temperature sensor error
320 OLP sensor error
403 Detection of freezing (During cooling operation)
Protection of Outdoor Unit when it is overload (during Safety Start,
404
Normal operation state)
407 Comp down due to high pressure
416 Discharge of a compressor is overheated
419 OUTDOOR UNIT EEV operation error
425 Power source line missing error (only for 3-phase model)
440
441
OUTDOOR UNIT fan1 error
461 [Inverter] Compressor startup error
462 [Inverter] Total current error/PFC over current error
463 OLP is overheated
Explanation Error Source
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit/Ourdoor
Unit
Hydro Unit/Ourdoor
Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
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