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

SiENBE12-620
5.28 Anti-icing Function in Other Rooms / Unspecified
Voltage (between Indoor and Outdoor Units)
UA, UH
remote control
Display
Outdoor Unit LED
A
Display
Method of
A wrong connection is detected by checking the combination of indoor and outdoor units on the
Malfunction
microcomputer.
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
1 2 3 4
5 1 1 1
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
UA, UH
The freeze protection
function is activated in other
rooms. Refer to A5.
Correct.
Reconnect.
(R3066)
251