Mitsubishi PUHZ-SHW80YAA Service Manual page 24

Check code
Abnormal point and detection method
Remote controller transmission error (E3)/
signal receiving error (E5)
1
2
1
2
Indoor/outdoor unit communication error
(Signal receiving error) (Outdoor unit)
Indoor/outdoor unit communication error
(Transmitting error) (Outdoor unit)
1
2
Non defined check code
Serial communication error
1
OCH651
Cause
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
1
2
3
4
Judgment and action
1
2–4
1
2–4
1
2–4
12
3
12
3
4