Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 77

Error code
E19
Remote controller:
-
7-segment display:
1. Applicable model
All models
2. Error detection method
E19 occurs
3. Condition of error displayed
Same as above
4. Presumable cause
Mistake in SW7-1 setting
Due to forgetting to turn OFF
SW7-1 after indoor operation
check)
Note:
Indoor operation ckeck/drain pump check mode
If the power is ON after SW7-1ON, indoor operation check/drain pump check mode can be established.
1) When the communication between remote controller and indoor PCB is established 15 seconds after power ON, it goes
to indoor operation check.
2) When the communication between remote controller and indoor PCB is not established, it goes to drain pump check
(CnB connector should be open before power ON)
LED Green Red
Keeps flashing 1 time flash
Indoor
Keeps flashing Stays Off
Outdoor
5. Troubleshooting
Diagnosis
E19 occurs when the
power ON
Is SW7-1
on the indoor control
PCB ON?
YES
75
–
Content
Indoor unit operation check,
drain motor check mode anomaly
NO
–
Countermeasure
Indoor control PCB
anomaly
(Anomalous SW7)
 Replace
Turn SW7-1 on the indoor
control PCB OFF and reset
the power