Hunter 44860, Installation And Operation Manual

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5. The heating or cooling will not turn on or off.
5a. Make sure the thermostat is not in permanent override mode.
5b. Wait. There may be as much as a 4-minute delay before the
system turns on or off to protect the compressor.
5c. Check circuit breakers and switches to ensure there is enough
power to the system.
5d. Replace batteries.
5e. If applicable, make sure the furnace blower door is closed properly.
5f. If your system has 4 wires, ensure the jumper is installed between the
RC and RH terminals.
6. The display comes on but does not stay illuminated.
6a. Replace batteries.
7. My system continues to operate when the thermostat is in the off
position.
7a. Replace unit.