Inspection of HVAC Control Module and Its Circuits: Notes
CAUTION:
HVAC control module can not be checked by itself.
It is strictly prohibited to connect voltmeter to HVAC control module with connector disconnected from it.
It is strictly prohibited to connect voltmeter to HVAC control module with connector disconnected from it.
HVAC control module and its circuits can be checked at HVAC control module wiring connector by measuring voltage and pulse signal.