SiSG121917E
Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis
142
Reference
7.3 Wiring Error Check Unexecuted
Error Code
U3
Outdoor Unit LED
Display
A
j
1
h
2
i
3
h
4
h
5
h
Method of Error
Detection
The system checks if wiring error check is executed after clearing the memory.
Error Decision
Conditions
An error is determined when the unit is operated by the remote controller without executing
wiring error check after the memory was cleared.
Supposed
Causes
The wiring error switch (SW3) may have been pressed for 10 seconds or more and the memory
may have been deleted. The unit cannot be operated unless wiring error check is executed.
Troubleshooting
Refer to Wiring Error Check Function on page 185 for details.
(R22429)
Caution
NO
YES
Wiring error check
executed?
Cond
u
ct
w
iring error check.
W
iring error check may not
ha
v
e
b
een finished
b
eca
u
se of
the tro
ub
le of indoor/o
u
tdoor
u
nit.
Cond
u
ct
w
iring error check
again.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
