Self Diagnosis Function; Error Display; Error Display Method - LG PRCKD21E Installation Manual

SELF DIAGNOSIS FUNCTION

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SELF DIAGNOSIS FUNCTION

Error display

This function displays the type of the disorder during the self diagnosis on AHU and when a dis-
order occurred.
The disorder display displays the code in the following table on wired remote controller and AHU
Controller 7segment LED.
If 2 or more disorders occur at the same time, they are displayed according to the order of the
error number.
After an error occurred, if the disorder is repaired, the error code disappears.

Error display method

The first display on 7segment indicates the error code, and the second display means communi-
cation PCB address or sensor attachment location information.
For detail description, please refer to the following contents.
Error type Display status
Basic error CH [error code] 0
Communication CH [error code]
PCB error
CH [error code]
Sensor error
Outdoor unit CH [error code]
error
h The communication PCB address indicates the rotary switch number on communication PCB.
Location number
01
02
03
04
05
06
07
h The above table shows the attachment location information of each sensor.
Output example
CH 3 0
CH 2 04
[address]
CH 13 02
[location]
CH 173 04
[address]
Location name
RA
SA
OA
Mixing
Pressure difference
Static pressure
EA
Detail description
No. 3 error occurrence
In address 'No. 4' communication PCB,
No. 2 error occurred
Air supply temperature sensor error
In outdoor unit connected to address
'No. 4' communication PCB, No. 173
error occurred
Corresponding sensor type
Temperature sensor, humidity sensor
Temperature sensor, humidity sensor
Temperature sensor, humidity sensor, damper
Temperature sensor, Damper
Pressure difference sensor
Static pressure sensor
Damper