32 AHU CONTROL KIT
Test run
Error display (AHU)
■‘##’ refers to the address information of the communication PCB.
Display
number Error item Cause of error Cause or error
CH 2 ##
CH 3 00
CH 4 ##
CH 5 ##
CH 6 ##
CH 8 00
CH 13 01
02
04
CH 14 01
02
03
CH 15 00
CH 16 05
06
CH 17 01
02
Temperature sensor
error at pipe inlet of
indoor unit
Communication error
between wired remote
controller and AHU
controller
Communication error
between AHU
controller and
communication PCB
Communication error
between
communication PCB
and outdoor unit
Temperature sensor
error on pipe outlet of
indoor unit
Emergency operation
Temperature sensor
error
Humidity sensor error
CO2sensor error
Pressure sensor error
Air flow sensor error
Communication PCB
rotary switch number
##
-
Communication PCB
rotary switch number
##
Communication PCB
rotary switch number
##
Communication PCB
rotary switch number
##
-
RA
SA
Mixing
RA
SA
OA
-
Differential pressure
Static pressure
RA
SA
Temperature sensor disconnection or short circuit at pipe inlet
of indoor unit
No communication signal for more than 3 minutes from wired
remote controller to the AHU controller
No communication signal for more than 3 minutes from
communication PCB to AHU controller
No communication signal for 5 minutes continuously from
communication PCB to outdoor unit
Temperature sensor disconnection or short circuit on pipe
outlet of indoor unit
The operating status of the smoke control mode through smoke detector is displayed
Temperature sensor (RA/SA/Mixing) disconnection/short
circuit/misconnection or when the sensor value is in the error
range
Humidity sensor (RA/SA/OA) disconnection/short
circuit/misconnection or when the sensor value is in the error
range
CO2sensor disconnection/short circuit/misconnection or when
the sensor value is in the error range
Pressure sensor (Differential pressure, static pressure) disconnection/short
circuit/misconnection or when the sensor value is in the error range
Air flow sensor (RA, SA) disconnection/short circuit/misconnection
or when the sensor value is in the error range