Daikin AT12BV1LS Pocket Manual page 148

Si10-417
5.3.12 Anti-icing Function in Other Rooms /
Unspecified Voltage (between Indoor and
Outdoor Units)
Remote
Controller
Display
Outdoor
Unit LED
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Trouble
shooting
Service Diagnosis
UA, UH
5 1
A 1 2
A wrong connection is detected by checking the
combination of indoor and outdoor units on the
microcomputer.
Operation halt due to the anti-icing function in other
rooms
Operation halt due to unspecified internal and/or
external voltages
Operation halt due to mismatching of indoor and
outdoor units
Operation halt due to the anti-icing function in other
rooms
Wrong connections at the indoor unit
PCB wrongly connected
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
Caution
Error-displaying
air-conditioner
running?
YES
Supply voltage
as specified?
YES
Check the model name.
Normal?
YES
Check the combination of all
the models being connected.
1 1 1
3 4
NO
NO
NO
Troubleshooting
The freeze protection
function is activated in
other rooms. Refer to
A5.
Correct.
Reconnect.
(R3066)
147