Temperature Door Actuator Drive Circuit

CAUTION: Do not use a meter with an impedance of less than 10 Meg ohms.

1. Insert the positive probe into terminal 3 (circuit 900) and the negative probe into terminal J (circuit 901), set temperature control to COLD - pause briefly.
2. SET TEMPERATURE TO HOT. The meter should read +7.0 to +7.5 volts for approximately 5 seconds.
3. SET TEMPERATURE TO COLD. The meter should read -7.0 to -7.5 volts for approximately 5 seconds.

CAUTION: The controller may not deliver the correct voltages to the temperature door actuator if the feedback circuit is faulty. Refer to "Temperature Door Feedback Circuit Test".