Humidity Sensor System Abnormality - Daikin Aurora Series Service Manual

SiUS341802E

2.23 Humidity Sensor System Abnormality

CC
Error Code
Applicable
FXFQ
Models
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
Causes
Troubleshooting
∗1. To delete the history, the ON/OFF button of the remote controller must be pressed and held for
Notes:
∗2. To display the code, the INSPECTION/TEST button of the remote controller must be pressed
∗3. If CC is displayed even after replacing the humidity sensor PCB (A2P) and taking the steps ∗1
Service Diagnosis
Defective sensor
Disconnection
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 PCB
and insert it again.
Does it
function normally?
NO
Delete the error code history
from the remote controller.
(∗1)
Is CC
displayed on the
remote controller?
(∗2)
NO
5 seconds in the check mode.
and held in the normal mode.
and 2, replace the indoor unit main PCB (A1P).
YES
YES
Troubleshooting by Error Code
Normal.
(Poor connector contact)
Replace the humidity sensor
PCB (A2P).
(∗3)
It is believed that external factors
(noise or else) other than failure
caused the error.
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