Error Display - LG PRCKD20E Owner's Manual

Test run
Error display (AHU)
I '##' refers to the address information of the communication PCB.
Display
Error item
number
CH 2 ## Temperature sensor
error at pipe inlet of
indoor unit
CH 3 00 Communication error
between wired remote
controller and AHU
controller
CH 4 ## Communication error
between AHU
controller and
communication PCB
CH 5 ## Communication error
between
communication PCB
and outdoor unit
CH 6 ## Temperature sensor
error on pipe outlet of
indoor unit
CH 8 00 Emergency operation
CH 13 01 Temperature sensor
error
02
04
CH 14 01 Humidity sensor error
02
03
CH 15 00 CO sensor error
2
CH 16 05 Pressure sensor error
06
CH 17 01 Air flow sensor error
02
32 AHU CONTROL KIT
Cause of error
Communication PCB Temperature sensor disconnection or short circuit at pipe inlet
rotary switch number of indoor unit
##
No communication signal for more than 3 minutes from wired
- remote controller to the AHU controller
Communication PCB No communication signal for more than 3 minutes from
rotary switch number communication PCB to AHU controller
##
Communication PCB No communication signal for 5 minutes continuously from
rotary switch number communication PCB to outdoor unit
##
Communication PCB Temperature sensor disconnection or short circuit on pipe
rotary switch number outlet of indoor unit
##
- The operating status of the smoke control mode through smoke detector is displayed
RA Temperature sensor (RA/SA/Mixing) disconnection/short
circuit/misconnection or when the sensor value is in the error
SA range
Mixing
RA Humidity sensor (RA/SA/OA) disconnection/short
SA circuit/misconnection or when the sensor value is in the error
OA range
- CO
the sensor value is in the error range
Differential pressure Pressure sensor (Differential pressure, static pressure) disconnection/short
Static pressure circuit/misconnection or when the sensor value is in the error range
RA Air flow sensor (RA, SA) disconnection/short circuit/misconnection
SA or when the sensor value is in the error range
Cause or error
sensor disconnection/short circuit/misconnection or when
2