Service Manual -
B-VMHxxAV-1
Troubleshooting 35
Check the fastening screws on the
PCB and IPM radiator.
Are they
fixed tightly?
Replace the outdoor
control PCB.
Tighten the screws and apply
silicon grease.
NO
YES
7.12 EC 0d(Outdoor unit malfunction Diagnosis and Solution)
Description
: The indoor unit detect the outdoor unit is error.
Recommended parts to prepare:
• Outdoor unit
Troubleshooting and repair
:
Is the main board
displaying an error?
Is the main board
displaying an error?
Power off, then restart the unit 2
minutes later. Does the outdoor main
board display an error code a few
minutes later?
Power off, then restart the unit 2
minutes later. Does the outdoor main
board display an error code a few
minutes later?
No
Yes
Refer to the prescribed
steps for resolving the
issue
Refer to the prescribed
steps for resolving the
issue
Yes
Summary of Contents for Comfort-Aire Century A-VMH18SV-1
Page 30: ...Service Manual B VMHxxAV 1 ...
Page 37: ...Service Manual B VMHxxAV 1 Outdoor Unit 3 3 Panel Plate X430 Square grille ...
Page 38: ...Service Manual B VMHxxAV 1 Outdoor Unit 4 4 Panel Plate D30 Square grille ...
Page 39: ...Service Manual B VMHxxAV 1 Outdoor Unit 5 5 2 Service Place Minimim 4 Recommended 12 ...
Page 42: ...Service Manual B VMHxxAV 1 Outdoor Unit 8 8 A VMH18SV 1 A VMH24SV 1 ...
Page 45: ...Service Manual B VMHxxAV 1 ...
Page 103: ...Service Manual B VMHxxAV 1 Troubleshooting 15 ...