LG PRDCA0 - Troubleshooting

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TROUBLESHOOTING
ENGLISH
[Error Code]
Display Number Error Item Cause of Error
CH 01 Room Temperature
Temperature sensor disconnection or
short circuit on Room or RA of AHU
CH 02
Pipe In Temperature sensor
error
Temperature sensor disconnection or
short circuit on pipe inlet of AHU
CH 03
Communication error between
wired remote controller and
Comm. Kit
No communication signal for more
than 3 minutes from wired remote
controller to the Comm. Kit
CH 05
Communication error between
Comm.
Kit and Outdoor Unit
No communication signal for 5 minutes
continuously from Comm. Kit to Out-
door Unit
CH 06
Pipe Out Temperature sensor
error
Temperature sensor disconnection or
short circuit on pipe outlet of AHU
CH 09 Option PCB EEPROM error
No reading signal for 5 times continu-
ously from EEPROM to Comm. Kit
Problem Cause Remedy
AHU Communication Kit
does not work
No power supply
Check the electrical connection and voltage
of the power supply.
Wiring is wrong
Check the electrical connection of the
Communication Kit (Refer to the circuit dia-
gram of the Communication Kit)
AHU Communication Kit
is broken
Check the electrical and mechanical part.
TROUBLESHOOTING