Troubleshooting
SiMT041311E
179
Service Diagnosis
2.40 Incomplete Setting for Hose Length
Error Code
UA
Method of Error
Detection
This fault occurs when the humidification hose length is not stored in the EEPROMs of the
indoor unit and the outdoor unit.
(Hose length is not stored at initial power on.)
Error Decision
Conditions
When the humidification hose length is not stored in EEPROMs of the indoor unit and the
outdoor unit.
Supposed
Causes
Hose length is not set.
Hose length is erased by replacement of the indoor unit PCB and the outdoor unit PCB.
(When both the indoor unit PCB and the outdoor unit PCB are replaced simultaneously, the
set value is erased.)
Troubleshooting
How to check the preset hose length
(1) Open the cover of the remote controller.
(2) Press the
SET UP
button for 5 seconds.
(3) Press the
V
or
W
button and select
Hose length
.
(4) Press the
APPLY
button pointing the transmitter of the remote controller at the indoor unit.
(5) The display shows the preset hose length.
Note:
When the hose length is not set,
Hose Unset
is displayed.
Referring to Humidifying Hose Length Setting on Part 7, set the hose length.
To return to the normal mode,
∗
press the
SET UP
button for 5 seconds.
∗
close the cover of the remote controller.
∗
leave the remote controller for 60 seconds.
Set the hose length with the
remote controller.
To the other
UA
fault
diagnosis
(R19685)
Caution
Check the preset hose length
with the remote controller.
Has the hose length
been set?
YES
NO
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.