Mitsubishi FDK15KXZE1 Technical Manual page 102

Error code
E19
Remote control:
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 check mode
If the power is ON after SW7-1ON, indoor operation check mode can be established.
1) When the communication between remote control and indoor unit PCB is established 15 seconds after power ON, it
goes to indoor operation check.
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
101
–
Content
Indoor unit operation
check mode anomaly
NO
–
'17 • KX-T-264
Countermeasure
Indoor unit control PCB
anomaly  Replace it.
(Anomalous SW7)
Turn SW7-1 on the indoor
unit control PCB OFF and
reset the power.