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2.3 Error Code List
Indoor PCB assembly
Error
Code
01 *
Problem in Remote Room Air sensor
02 **
Problem in Refrigerant (Inlet side) sensor
Communication error between indoor unit and wired
03 ****
remote controller
Communication error between Main PCB(Indoor)
05 **
and Main PCB(Outdoor Cycle)
06 **
Problem in Refrigerant pipe sensor (Outlet side)
08 ***
Problem in Water Tank sensor
09 ****
PCB Program (EEPROM) Fault
13 ***
Problem in Solar-thermal sensor
14 ****
Problem in Flow rate
15 ****
Overheating of water pipe
16 ****
Problems in sensors An error
17 *
Problem in Water-inlet sensor
18 *
Problem in Water-outlet sensor
19 *
Problem in Elec/Heater Water-outlet sensor
20 ****
Electric heater overheated
231 *
Problem in Water Pressure Sensor
232 **** Problem in Flow Sensor
• Notice of error code
- Slight Trouble(S-Trouble) : *
A trouble is occurred with temperature sensor of indoor unit. (sensing fail)
Emergency operation(heating) is possible with heat pump and electric heater.
- Heavy Trouble(H-Trouble) : **
A trouble is occurred with cycle and system can not be operated
Emergency operation(heating) is possible with electric heater ONLY.
- Other Trouble(O-Trouble) : ***
A trouble is occurred with optional function. (e.g. DHW tank sensor, Solar thermal sensor)
Emergency operation(heating) is possible with heat pump and electric heater.
In case of CH13, Heat pump operation does not stop.
- Error : ****
A serious fail was found and system can not be used before repair it.
CAUTION
Precaution in service or check
Even after stopping the operation of product, it takes some time to discharge the remaining electricity of the electrolyt-
ic capacitor that was charged early. Before conducting a checking or repairing job, pull out the plug out of the outlet
and make sure that the lamp on the control board outdoor unit is off.
Description
Main Reasons
Remote air temperature sensor of MainPCB(indoor) is open or short.
Refrigerant inlet pipe temperature sensor of indoor unit is open or short.
Communication between wired remote controller and indoor unit is not
possible.
There is no communication between the Main PCB(Indoor) and the Main
PCB(Outdoor cycle).
Refrigerant outlet pipe temperature sensor of indoor unit is open or short.
Domestic hot water tank temperature sensor of indoor unit is open or short.
The optional EEPROM is loosely inserted in or disconnected from the Main
PCB(Indoor)
Solar pipe temperature sensor of indoor unit is open or short.
Low flow detection during pump operation
The temperature of the water pipe has exceeded a certain temperature.
An error code 17,18,19 error has occurred at the same time.
Water inlet pipe temperature sensor of indoor unit is open or short.
Water outlet pipe temperature sensor of indoor unit is open or short.
Electric backup heater outlet temperature sensor of indoor unit is open or
short.
Fuse of electric heater is blown due to overheat.
Water Pressure Sensor of indoor unit is damaged.
Flow Sensor of indoor unit is damaged.
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