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Discussion Starter · #1 ·
Hello I have a carrier furnace from the 90's and it won't work. I have a error code 34 then goes into lock out error 14. The firnance seems like it tries to light the heating element gets all bright then dies does it threw times then. It goes into lock out mode for awhile it was randomly working when it wants to now nothing. I have tried cleaning the flame sensor with sand paper no luck what should I do ?
 

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do you have other gas appliances and do they work/getting gas? gas meter ON? check for 24 volts AC at the gas valve after a few seconds and when the igniter is glowing. if none then the circuit board may be faulty.
 

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Discussion Starter · #3 ·
I have a Gas fireplace that won't lite but my gas stove and water heater work. the fireplace used to work.
 

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Discussion Starter · #4 ·
I have a Gas fireplace that won't lite but my gas stove and water heater work. the fireplace used to work.
 

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As Yuri suggests
When the igniter is glowing, is the gas valve receiving 24V ac.
If not, then the board may be faulty.
If the valve is getting 24V and not opening then the valve is probably faulty.
 
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