Incomplete Setting For Hose Length - Daikin CTXU25G2V1B Service Manual

SiBE12-908

2.14 Incomplete Setting for Hose Length

UA
Remote
Controller Display
Method of This fault occurs when the humidification hose length is not stored in the EEPROMs of the
indoor unit and the outdoor unit.
Malfunction
(Hose length is not stored at initial power on.)
Detection
Malfunction
Decision
Conditions
Supposed Hose length is not set.
Hose length is erased by replacement of the indoor unit PCB or the outdoor unit PCB. (When
Causes
both the indoor unit and the outdoor unit PCBs are replaced simultaneously, the set value is
erased.)
Troubleshooting
How to check the preset hose length
1) Press the 3 buttons (TEMP ▲ , ▼ , MODE) simultaneously.
2) Press the TEMP ▲ or ▼ button and select PC . (B)
3) Press the MODE button to enter the pipe check mode. (C)
4) Press the TEMP ▲ or ▼ button to change the display of the hose length.
5) Long beep sound means that the display shows the preset hose length.
Service Diagnosis
When the humidification hose length is not stored in EEPROMs of the indoor unit and the
outdoor unit.
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check the preset hose length
with the remote controller
Has the hose length
been set?
YES
5C
is displayed. (A)
(D)
If you hear the long beep when the display is (E), the hose length is not set.
NO
Troubleshooting
Set the hose length with the
remote controller.
To other " UA " fault diagnosis
(R9423)
A
B
C
D
(Set point;
long beep)
E
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