Humidity Sensor System Abnormality - Daikin VRV EMERION REYQ-AATJA Service Manual

Troubleshooting by Error Code

3.30 Humidity Sensor System Abnormality

Applicable
FXFQ-T
Models
CC
Error Code
Method of Error
Even if an error occurs, operation still continues.
Detection Error is detected according to the moisture (output voltage) detected by the moisture sensor.
Error Decision
When the moisture sensor is disconnected or short circuited
Conditions
Supposed
 Defective sensor
Causes  Disconnection
Troubleshooting
Note(s)
1.
2.
3.
359
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Remove the humidity sensor
from the indoor unit control
PCB and insert it again.
Does it
YES
function normally?
NO
Delete the error code history
from the remote controller.
(∗1)
Is CC
displayed on the
YES
remote controller?
(∗2)
NO
To delete the history, the ON/OFF button of the remote controller must be pressed and
held for 5 seconds in the check mode.
To display the code, the INSPECTION/TEST button of the remote controller must be
pressed and held in the normal mode.
If CC is displayed even after replacing the humidity sensor PCB (A2P) and taking the
steps 1 and 2, replace the indoor unit control PCB (A1P).
SiUS372201EB
Normal.
(Poor connector contact)
Replace the humidity sensor
PCB assy (A2P).
(∗3)
It is believed that external factors
(noise or else) other than failure
caused the error.
Part 6 Service Diagnosis