Table of Contents
Advertisement
38MGRBQ: Service Manual
DIAGNOSIS AND SOLUTION (CONT)
Water-level alarm malfunction diagnosis and solution
ERROR CODE
MALFUNCTION DECISION
CONDITIONS
SUPPOSED CAUSES
Troubleshooting
Power off, then restart the unit 3 minutes
later. Is it still displaying the error code?
.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
REFER TO INDOOR UNIT SERVICE MANUAL
If the sampling voltage is not 5V, the LED displays the failure code.
Wiring mistakes
Faulty water-level switch
Faulty water pump
Faulty indoor PCB
,
Yes
Is the water-level switch
-
inserted well?
Yes
Is the water -level switch
-
broken?
No
Replace the water pump. Is
the malfunction still
unresolved?
Yes
Replace the indoor main PCB.
s
?
No
Insert the water level switch well
Yes
Replace the water-level switch
,
43
-
-
-
Advertisement
Table of Contents
