ESIE09-05 Troubleshooting by Indication on the Remote Controller
Troubleshooting 211
3.40 “U3” Check Operation not Executed
Remote
Controller
Display
U3
Applicable
Models
ERQ 125 ~ 200 A7V1
Method of
Malfunction
Detection
Check operation is executed or not
Malfunction
Decision
Conditions
Malfunction is decided when the unit starts operation without check operation.
Supposed
Causes
Check operation is not executed.
Troubleshooting
(V3052)
Has the
check operation
performed on Outdoor
unit PC board?
Press the BS4 on PC board on the
master outdoor unit for 5 seconds
or more to execute check
operation.
Replace the main PC board on the
outdoor unit.
NO
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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