No heat

Hello Sean,
I had answer your question, but I never did get an answer to mine. Please see my response to your question as what else can be missing on this dryer. Also, do you provide wiring diagrams on this equipment. It would be helpful if I can see what should be happening in the circuit. I await your response. Thank you.
Roland

Good day Sean’
Thanks Gentlemen for your support.
I mean that the glow bar comes on, flame sensor opens, pilot valve open, however, the main burner coil will not open and the unit shuts off the pilot flame in a matter of seconds. it’s behaving as though the flame is still not being proofed by the system for safe conditions. We checked all the safeties first before we decided to change the Gas valve. The duct is removed from the unit to ensure proper venting from the unit, which rule out lint blockage. Do you know the amp that we should be reading from the glow bar when it’s glowing. I am thinking I may have a faulty glow bar or sensor. However, the Tech sheet info. is not with this unit. Have you experience this type of behavior with any other unit before. I have already removed and replace the Gas valve, still this condition exist. Does this help.

Good day Sean’
Thanks Gentlemen for your support.
I mean that the glow bar comes on, flame sensor opens, pilot valve open, however, the main burner coil will not open and the unit shuts off the pilot flame in a matter of seconds. it’s behaving as though the flame is still not being proofed by the system for safe conditions. We checked all the safeties first before we decided to change the Gas valve. The duct is removed from the unit to ensure proper venting from the unit, which rule out lint blockage. Do you know the amp that we should be reading from the glow bar when it’s glowing. I am thinking I may have a faulty glow bar or sensor. However, the Tech sheet info. is not with this unit. Have you experience this type of behavior with any other unit before. I have already removed and replace the Gas valve, still this condition exist. Does this help.

Thanks
Roland

Hello Roland,

When you say it will not start “full heat” do you mean that the dryer doesn’t heat at all? Or does the flame not stay on long enough?
If the flame isn’t staying on long enough, it could be one of a couple things. First, I would check to make sure that the venting is not clogged to going outside the home. Second, it could be the thermistor on the blower housing and or the electronic control which would not keep the flame on long enough.
If the flame won’t come on at all, it could be a couple other items. First, it could be any of the thermostats thermistors or fuses on the unit, you can Oma with an ohmmeter to check the resistance on each of those components the thermostats and fuses should be normally closed the thermistor you should get a resistance reading. First, it could be any of the thermostats thermistors or fuses on the unit, you can Oma with an ohmmeter to check the resistance on each of those components the thermostats and fuses should be normally closed the thermistor you should get a resistance other options for no flame at all, the igniter, the flame sensor, the motor switch, or the electronic control. You should be able to test the flame sensor with your own meter and check for continuity, and your igniter with your own meter to check for resistance value.
If you can clarify to me which of the flame issues you’re having, no flame at all or not staying on long enough I will try to respond with some more detailed information. Hopefully this helps somewhat

Sean

I know that when you replaced the gas valve you had turn off the shut off valve. But have you verified that you have gas going to the unit checked to see if any other shut offs inline might have been bumped or turned off? If the ignitor is glowing and the burner is not coming on then all I have ever seen bad was the gas valve. I would also verify that you have proper airflow otherwise your burner will short cycle on the hi limit thermostat. Hope this helps.