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BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22627
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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carrier weathermaker 9200 will not ignite error code 34

Customer Question

carrier weathermaker 9200 will not ignite error code 34 checked filter tried restarting. blower motor comes on and it attempts to ignite
Submitted: 6 years ago.
Category: HVAC
Expert:  BillyHvac replied 6 years ago.




Sorry for delay...very busy last couple days. Do you still need assistance?



Customer: replied 6 years ago.
Expert:  BillyHvac replied 6 years ago.


Ok...code 34..flame fault.


Exhaust motor starts....then what? Does ignitor glow?....any flames...?



Customer: replied 6 years ago.
ignitor glows, but doesn't light off burner
Expert:  BillyHvac replied 6 years ago.


Thank you.....does the gas valve click?....does it sound like gas enters the burner?



Customer: replied 6 years ago.

can't say that i hear a click what should i look/listen for exactly

Expert:  BillyHvac replied 6 years ago.


Here is what should be...


exhaust fan starts

ignitor glows

30 seconds later gas valve clicks and gas enteres burner

If no flame in 3 seconds then code 34 appears


since you have glow the options are as follows..


you have gas entering burner but ignitor is not hot enough

you do not have gas

you have bad gas valve

you frozen gas meter or regulator


You can undo a pipe by furnace to see if gas is available.