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1. My heating or cooling will not turn on or off.
1 a. Check the HE/HG switch to ensure it is set to the correct position.
1 b. Wait. There may be as much as a 4-minute delay before the system
turns on or off to protect the compressor.
1 c. Check the circuit breakers and switches to ensure there is enough
power to the system.
1 d. Replace the batteries with fresh AA alkaline batteries.
1 e. If applicable, make sure the furnace blower door is closed properly.
1 f. If your system has 4 wires, ensure the jumper wire is installed
between the RC and RH terminals.
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2. My system continues to operate when the thermostat
is in the off position.
2 a. Replace unit.