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BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22116
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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Follow up question from last night. Model 398AAW036080D

Customer Question

Follow up question from last night. Model 398AAW036080D
Submitted: 8 months ago.
Category: HVAC
Customer: replied 8 months ago.
New main control board, new wiring harness and new inducer control board. Now inducer starts, pilot lights, but not main ignition. I believe gas valve is not opening. I have 24 volts on main at gas valve after pilot warms up to temp
Expert:  Gaztech replied 8 months ago.

Hi I am Luke, Check gas supply like shut off valve on gas line, gas in propane tank if it apply's, on/off switch on gas valve.

Customer: replied 8 months ago.
There is gas, as I stated the pilot is lit
Expert:  Gaztech replied 8 months ago.

Ok, let me check

Expert:  Gaztech replied 8 months ago.

Not much longer

Expert:  Gaztech replied 8 months ago.

OK after pilot is lit the flame sensor is not reading due to either it's unplugged , defective or needs cleaning.

Expert:  BillyHvac replied 8 months ago.

Hi,

this is the Bryant 3 wire pilot...there is a warp switch in the side that can get weak..

You have 2 options...use a short wire shaped in a U....at the gas valve you will see terminals 1-5. WITH PILOT LIT...jump terminal 1 to 5..

If burner lights = bad pilot assembly

If it does not = bad gas valve