8.2.2
Indoor / outdoor unit’s communication diagnosis and solution(E1)
Error Code
E1
Malfunction decision
conditions
Indoor unit does not receive the feedback from outdoor unit during
110
seconds and this condition happens four times continuously.
Supposed causes
●
Wiring mistake
●
Indoor or outdoor PCB faulty
Trouble shooting:
Measure Vs, is it positive fluctuation?
(Vs is the voltage between S and N of
outdoor unit. Red pan-S, Black pan-N)
Measure Vs, is it positive fluctuation?
(Vs is the voltage between S and N of
outdoor unit. Red pan-S, Black pan-N)
Yes
Power off, then restart the unit 2 minutes later
Power off, then restart the unit 2 minutes later
No
Replace the outdoor main PCB.
Power on. Is the error
extinguished?
Replace the outdoor main PCB.
Power on. Is the error
extinguished?
Check the outdoor wiring connection
Check the outdoor wiring connection
Replace the indoor main PCB.
Power on. Is the error
extinguished?
Replace the indoor main PCB.
Power on. Is the error
extinguished?
Yes
Replace the outdoor main PCB.
Replace the outdoor main PCB.
No
Replace the indoor main PCB.
Replace the indoor main PCB.
No
Check the indoor wiring connection
Check the indoor wiring connection
Yes
Yes
Check whether reactor
is normal?
Check whether reactor
is normal?
Yes
Replace the reactor
Replace the reactor
No
Summary of Contents for MBSFI-A1-1511
Page 1: ...Mission 3D Inverter Series Service Manual 2014 MBSEU A 1412...
Page 9: ......
Page 11: ...For MOB01 09HFN1 QRD0GW MOB01 12HFN1 QRD0GW MOB01 18HFN1 QRD0GW...
Page 12: ...For MOF2 24HFN1 QRD0GW Model W D H W1 A B MOF2 24HFN1 QRD0GW 845 320 700 908 560 335...
