I Test Run; I Self Diagnosis Function; Error Display - LG PRCKD20E Owner's Manual

Test run
Self diagnosis function

Error display

I This function displays the self diagnosis and the type of error if identified.
I For the error display, the applicable code is displayed on the 7 segment LED on the wired remote
controller and AHU controller.
I If there are 2 or more errors simultaneously, the codes are displayed in the order of occurrence.
I Once you resolve the error, the error code will disappear.
Error display method
I The first display on the 7 segment display refers to the error code and the second part refers to the
location information of the communication PCB address or sensor location. Refer to the following for
details.
Error type
Basic error
Communication PCB error
Sensor error
Outdoor unit error
* The address the communication PCB refers to the rotary switch number on the communication PCB.
Location number
01
02
03
04
05
06
* The above table shows the information of the attached location by sensor.
Display condition
CH [Error code] 0
CH [Error code] [Address]
CH [Error code] [Location]
CH [Error code] [Address]
Location name
RA
SA
OA
Mixing
Differential pressure
Static pressure
Example of output
CH30
CH204 Error #2 in communication PCB with
CH1302 Air supply temperature sensor error
CH17304 Error #173 on the outdoor unit connected
to communication PCB with address of '#4'
Applicable sensor type
Temperature sensor, humidity sensor
Temperature sensor, humidity sensor
Temperature sensor, humidity sensor
Temperature sensor
Differential pressure sensor
Static pressure sensor
Test run
Detail description
Error #3
address of '#4'
Owner's Manual 31