Anti-Icing Function In Other Rooms / Unspecified Voltage (Between Indoor And Outdoor Units) - Daikin B-Series Service Manual

Si12-714
5.25 Anti-icing Function in Other Rooms / Unspecified
Voltage (between Indoor and Outdoor Units)
Remote
Controller
Display
Outdoor Unit LED A
Display
Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the
microcomputer.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
UA , UH
5 1 1 2 1 3 1 4
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,
Caution or parts damage may be occurred.
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
NO
NO
NO
Troubleshooting
The freeze protection
function is activated in
other rooms. Refer to A5.
Correct.
Reconnect.
(R3066)
215