LG PAHCMS000 Service Manual

Troubleshooting
Troubleshooting
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1.1 Error Indicator (Comm.Kit)
[Error Code (Comm.Kit)]
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 Outdoor Unit
CH 06 Pipe Out Temperature sensor error
Temperature sensor disconnection or short
circuit on pipe outlet of AHU
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 diagram of
the Communication Kit)
AHU Communication
Kit is broken
Check the electrical and mechanical part.
Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
- Error mark is displayed on wired remote controller, and 7-segment LED of outdoor unit control board as shown in
the table.
- If more than two troubles occur simultaneously, lower number of error code is first displayed.
- After error occurrence, if error is released, error LED is also released simultaneously.

LG PAHCMS000 Specifications

General

Brand	LG
Model	PAHCMS000
Category	Air Conditioner
Language	English