Indoor Unit Operation Check, Drain Pump Motor Check Setting Error - Mitsubishi Heavy Industries FDT100VNAWVH Service Manual

Error code
E19
Remote control:
1. Applicable model
All models
2. Error detection method
After indoor operation check,
when the communication
between indoor and outdoor
unit is established and SW7-1 is
still kept ON.
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:
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 unit control
PCB ON ?
110
-
Content
Indoor unit operation check,
drain pump motor check setting error
NO
YES
-
'19 • PAC-SM-309
Countermeasure
Defective indoor unit
control PCB (Defective
SW7) ➞ Replace.
Turn SW7-1 on the indoor
unit control PCB OFF and
reset the power.