6 Troubleshooting
Outdoor unit
SMGB0135 rev.0 - 06/2020
66
LD301 blinks 14 times
LD301 blinks 12 times
LD301 blinks 11 times
LD301 blinks 15 times
Circuit abnormality
Replace the outdoor unit controller.
Fan stopped due to strong wind
Fan lock stopped
Abnormality of DC voltage
Is a leakage breaker installed?
Yes
Yes
No
No
No
Yes
Yes
Normal
Abnormal
Failure of Q601
Is the insulation of the
compressor normal?
Momentary interruption due to strong wind.
Operation is resumed when the wind weakens.
Replace the compressor and then
check the outdoor electrical parts.
Operation stopped due to the detection of abnormality
of the outdoor fan. It may be a momentary interruption
due to strong wind, introduction of foreign objects in
the propeller fan, abnormality of the outdoor fan motor
or abnormality of the drive circuit.
Replace the outdoor electrical
parts.
Replace the outdoor electrical
parts (Due to Q601 failure).
Change the outdoor ele. unit.
Q601 abnormal
Check whether foreign objects are
inserted at the propeller fan, or
if there is any abnormality at the
propeller fan.
Is the wind strong? Check
whether restart is possible.
(It may take several minutes
before restarting)
Check the outdoor fan motor (For
details, see the page on the outdoor
fan motor or the label on the cover
of the electrical parts). Is there an
abnormality of the outdoor fan motor?
Check whether the connectors of
the outdoor fan motor are loose.
Remove all the foreign matter.
In case that the abnormality
of the propeller fan persists,
replace the propeller fan.
Insert the connector.
This is not a sign of a failure in
the outdoor fan motor or outdoor
electrical parts.
Replace the outdoor fan motor.
Fan motor normal
Fan motor
abnormal
Operation continues after restart.
Abnormal
Abnormal
Normal
Normal
It stops
Replace the outdoor electrical
parts (due to abnormality in the
drive circuit of the outdoor fan).
No
