Opened damper manually...
If your damper motor is not functioning, then it could be one of the following.
the damper motor itself, the thermostat ( the controller),
or the thermistor ( the temperature sensor).
either one of this is bad, then the damper will not work.
bring down the damper motor and check the voltage requirement of the motor. bench test it if you can to determine if it is still working.
test the thermistor for resistance. immerse it in ice cold water and watch the resistance change. if you do not have a reference value, then it may not tell if it is good or bad.
the electronic controller would be a hard thing to test.
if you have the book and it has diagnostics , then run the damper control test to test the controller.
tnx 4 using fixya,
drcool
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is it the damper motor...thermostat or what?
what is your question please?
drcool
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