42
Error codes
If the unit has some problems and does not work normally, error code is shown on the OUTDOOR UNIT main PBA or LCD
of the wired remote controller.
Display Explanation Error Source
101 CONTROL KIT / OUTDOOR UNIT wire connection error
CONTROL KIT,
OUTDOOR UNIT
120
Short- or open-circuit error of the room temperature sensor of the Zone 2 indoor unit
(detected only when the room thermostat is used)
CONTROL KIT
121
Short- or open-circuit error of the room temperature sensor of the Zone 1 indoor unit
(detected only when the room thermostat is used)
CONTROL KIT
162 EEPROM Error CONTROL KIT
198 Error of Terminal Block's Thermal Fuse(Open) CONTROL KIT
201 CONTROL KIT/OUTDOOR UNIT communication error (Matching error)
CONTROL KIT,
OUTDOOR UNIT
202 CONTROL KIT/OUTDOOR UNIT communication error (3 min)
CONTROL KIT,
OUTDOOR UNIT
203 Communication error between INVERTER and MAIN MICOM (6 min) OUTDOOR UNIT
221 OUTDOOR UNIT temperature sensor error OUTDOOR UNIT
231 Condenser temperature sensor error OUTDOOR UNIT
251 Discharge temperature sensor error OUTDOOR UNIT
320 OLP sensor error OUTDOOR UNIT
403 Detection of OUTDOOR UNIT compressor freezing (During cooling operation) OUTDOOR UNIT
404
Protection of OUTDOOR UNIT when it is overload (during Safety Start, Normal
operation state)
OUTDOOR UNIT
407 Comp down due to high pressure OUTDOOR UNIT
416 Discharge of a compressor is overheated OUTDOOR UNIT
425 Power source line missing error (only for 3-phase model) OUTDOOR UNIT
440 Heating operation blocked (outdoor temperature over 35°C) OUTDOOR UNIT
441 Cooling operation blocked (outdoor temperature under 9°C) OUTDOOR UNIT
458 OUTDOOR UNIT fan1 error OUTDOOR UNIT
461 [Inverter] Compressor startup error OUTDOOR UNIT
462 [Inverter] Total current error/PFC over current error OUTDOOR UNIT
463 OLP is overheated OUTDOOR UNIT
464 [Inverter] IPM over current error OUTDOOR UNIT
465 Compressor V limit error OUTDOOR UNIT
466 DC LINK over/low voltage error OUTDOOR UNIT
467 [Inverter] Compressor rotation error OUTDOOR UNIT
468 [Inverter] Current sensor error OUTDOOR UNIT
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