Service Manual -
B-VMHxxAV-1
Troubleshooting 27
7.4 EH 60/EH 61/EH 62/ EH 65/ EC 53/EC 52/EC 54/EC 56/EC 57/EC 50/EC 5C (Open Circuit
or Short Circuit of Temperature Sensor Diagnosis and Solution)
Description
: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure.
Recommended parts to prepare:
• Connection wires
• Sensors
• PCB
Troubleshooting and repair:
Check the connection between
temperature sensor and PCB.
Replace indoor PCB((E4/E5) or
outdoor PCB(F1/F2/F3)
Is it within acceptable
parameters?
Is it properly wired?
Ensure proper connections.
NO
Measure the resistance value
of the sensor.
YES
Replace the sensor.
NO
YES
Note: For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric
control box should be replaced as a whole. This picture and the value are only for reference, actual appearance
and value may vary
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 ...