My gas furnace will not stay on and produce heat. The pilot stays lit but it when we adjust the thermostat it comes on and then shuts off within 10-15 seconds the furnace shuts down but pilot stays on consitently.

Chech the heat anticipator in the thermostat, this is a numbered slide and set it to .45 if it is electronic thermostat then the thermostat may be faulty. You could try jumpering the wires in the subbase of the thermostat and see if it stays on, the wires to jumper are red and white, good luck . Mike

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