When diagnosing the control circuit at the thermostat subbase, between which two terminals would a jumper wire be placed to check operation of the cooling circuit?
A) R and G
B) R and W
C) R and Y
D) G and Y

Question

Quizplus · Accepted Answer

A jumper wire should be placed between R and Y terminals to check the operation of the cooling circuit. The thermostat sends a signal for cooling to the Y terminal, which then activates the cooling circuit. Placing a jumper wire between R and Y bypasses the thermostat and activates the cooling circuit directly, allowing for testing of the cooling system.

When Diagnosing the Control Circuit at the Thermostat Subbase, Between