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My name ***** *****. Heil furnace won't light, showing 2…

Customer Question
Hi, my name *****...

Hi, my name ***** *****. Heil furnace won't light, showing 2 flash code meaning pressure switch open . install new pressure switch, check vent lines and condensate line all clear, even install new draft motor will not light, keep showing 2 flash code. model# *****

Contractor's Assistant: Thanks. Can you give me any more details about your issue?

Jump t-stat furnace won't light, check for 24v to board from tran, 24v from tran good, draft motor come on with call for heat, blower come on for 90 sec then goes off then furnace show normal heart beat for 30 sec. then 2 flash code again

Submitted: 2 years ago.Category: HVAC
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2/24/2016
HVAC Technician: airheatman, HVAC Technician replied 2 years ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,367
Experience: Furnace, A/C and heat pump specialist.
Verified

Can you verify the pressure switch is indeed closing?

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Customer reply replied 2 years ago
LIT ONCE, THEN BURNERS WENT OFF, THEN 2 FLASH CODE CAME ON
Customer reply replied 2 years ago
new pressure switch and draft motor
Customer reply replied 2 years ago
can there be a board issue
HVAC Technician: airheatman, HVAC Technician replied 2 years ago

Yes if pressure switch is indeed closing and opening board may be defective not sensing it opening and closing.Do you have a meter to see if switch is opening and closing?

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