Daikin ERSQ 011AAV1, Service Manual

Page: 153 / 262

ESIE09-08 Troubleshooting by Indication on the Remote Controller
Troubleshooting 141
3.10
“CJ”
Indoor Unit: Malfunction of Thermostat Sensor in
Remote Controller
Remote Control
Display
CJ
Subcode 0
Applicable
Models AII indoor unit models
Method of
Malfunction
Detection
Malfunction detection is carried out by temperature detected by remote control air temperature
thermistor.
Malfunction
Decision
Conditions
When the remote control air temperature thermistor becomes disconnected or shorted while the
unit is running.
Supposed
Causes
„ Defect of remote control thermistor
„ Defect of remote control PC board
„ Defect of indoor PC board (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
(V2787)
Turn power supply OFF, then
power ON again.
Is "
CJ
" displayed
on the remote control?
YES
NO
Replace remote control.
Turn power supply OFF, then
power ON again.
YES
NO
Normal operation.
Replace indoor unit
PC Board (A1P).
Is “CJ” displayed
on the new remote
control?
External factor other than
equipment malfunction
(for example noise, etc.)