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Troubleshooting for Error Code
Indoor Unit
- This function displays the disorder types at the self diagnostics and the occurrence of the
disorder for the product.
- The disorder display shows the code in the following table on the red/green LED of the wired
remote controller and outdoor unit control board.
- If two or more types of disorders occur simultaneously, it displays in the order of the error
number.
- After error occurs, the error code disappears when the disorder is repaired.
h Error code 01, 08, 17, 18 can be operated with emergency operation.
Error
No.
Error Type Main Reasons
CH01 Air temperature sensor error
Air temperature sensor disconnection or short
circuit
CH03
No communication between wired
remote controller & indoor unit
The remote controller does not receive the signal
from indoor unit during specific time
CH05
Indoor unit & outdoor unit
communication error
No signal communication between indoor unit &
outdoor unit
CH08 Water tank temperature sensor error
Water tank temperature sensor disconnection or
short circuit
CH09 Indoor unit EEPROM error
Communication between the micro-processor &
the EEPROM / Error due to EEPROM damage
CH11
Indoor unit & inverter PCB
communication error
No signal communication between indoor unit &
inverter PCB
CH12 Inverter PCB error Error occurrence in inverter PCB
CH13 Problem in Solar-thermal sensor
Solar pipe temperature sensor of indoor unit is
open or short.
CH14 Flow switch error Abnormal working of flow switch
CH15 Water pipe overheated Water outlet temperature is above 90 °C
CH16
Water inlet & outlet temperature
sensor error
Water inlet & outlet temperature sensor
disconnection or short circuit simultaneously
CH17 Water inlet temperature sensor error
Water inlet temperature sensor disconnection or
short circuit
CH18
Water outlet temperature sensor
error
Water outlet temperature sensor disconnection
or short circuit
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