Humidity Sensor System Abnormality - Daikin SkyAir RZR-P Series Service Manual

SiUS281117

2.20 Humidity Sensor System Abnormality

CC
Remote
Controller
Display
Applicable FCQ
Models
Method of Error The error is detected according to the humidity (output voltage) detected by humidity sensor.
Detection
Error Decision The error is generated when the humidity sensor becomes disconnected or shorted when the
Conditions unit is running.
 Error code is displayed but the system operates continuously.
 Defective sensor
Supposed
 Broken wire
Causes
 External factor (Noise, etc.)
Troubleshooting
1. To delete the record, the ON/OFF button of the remote controller must be pressed and held
Note:
2. To display the code, the Inspection/Test button of the remote controller must be pressed and
3. If "
128
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 record
from the remote controller. (∗1)
Error is displayed again.
(∗2)
NO
for 5 seconds in the check mode.
held in the normal mode.
CC
" is displayed even after replacing the humidity sensor PCB (A2P) and taking the steps
1 and 2, replace the indoor unit PCB (A1P).
Troubleshooting by Remote Controller
YES
YES
It is 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.
Service Diagnosis