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About Howard Livingston
Expertise
Can answer questions on electrical control circuits, power supply,airflow & distribution, electrical components,refrigerant problems,gas, electric & propane furnaces.No boiler or refrigerator or oil fired furnaces experience.Just HVAC questions please.
Experience
35 years experience in residential & light commercial repair & installation.
Organizations
None
Publications
None
Education/Credentials
Mechanical Engineering degree.
Awards and Honors
None
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You are here: Experts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC > Gas Furnance Issues
Expert: Howard Livingston - 10/23/2009
Question
QUESTION: Before I begin, I want to thank you Mr. Howard for answering my question. Well, I have a gas furnace here at my place. I made the stupid mistake of moving the thermostat control up and down the temperature scale, and now the furnace will not produce any heat. I tried moving the tab to a degree where I knew it would produce heat, but I keep hearing a clicking sound. It sounds as if it wants to start but it doesn't. What can I do to correct this problem.
ANSWER: Hey Jay, what kind of furnace is this ?? A standing pilot or a circuit board controlled type. Gimme a clue & I'll see what I can figure out.
---------- FOLLOW-UP ----------
QUESTION: Well, the circuit board controls the electrical power to the furnance.... I believe it could be circuit board controlled, because, I cannot start the pilot manually.
Answer
That kind of furnace, controlled by a circuit board, starts thre heat cycle with the induced draft motor running. I would start by jumping the red & white wires behind the thermostat to see if the motor runs. If not you may have a bad board or a bad motor. Lots of electrical diagnosing neded after that. Difficult to do online.
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