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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.
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None
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None
Education/Credentials
Mechanical Engineering degree.
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None
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You are here: Experts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC > Furnace burner not lighting
Expert: Howard Livingston - 11/6/2009
Question
I have a Carrier 58PAV/RAV upflow HVAC unit...when I adjust the thermostat, the unit kicks on, the blower and fan startup but ignitor/burner does not fire up and the unit shuts down after about 1-2 min. I can restart the unit by turning off/on the local electrical switch but the result occurs. The indicator light flashes error code 34. Please help?
Answer
Don't have knowledge of those codes Derrick. Could be a failed igniter or a pressure switch. Try jumping across the pressure switch terminals. Or disconnecting a wre. Neer know wheter that is a NO or NC switch.Examine closely the igniter for cracks or broken carbon. It's one of these 2 parts stopping the fire.Blower will run anytime.
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