Furnace Burner Keeps Cutting Off
Hello all, So I'm having an issue where the burner for my Dometic DFMD 30111 furnace keeps cutting off while it's trying to heat my travel trailer. It does still heat the trailer, but the burner cu...
Forum Discussion
1. Bad Electrode
2. Bad Ignition module
3. Wall Tstat WILL NEVER CAUSE THIS TYPE PROBLEM---NEVER.
4. If it cycles fast like in the video linked you tube, then the Hi limit switch is NOT the cause
5. Hi Limit switch can cause this, but it depends on what the OP states is the ON/OFF burner cycle time. THIS IS CRITICAL FOR HELP AND DIAG.
6. If you suspect bad LP regulator, here is a simple test. Turn on the Range burners all 3 or 4. Should have good size blue flames. Start the Furnace and watch the burners, IF when the furnace lights and those blue flames diminish or almost go out, your LP regulator is bad.
7. Last it could be as the You Tube. The Ignition module needs the update kit to relocate the ignition module. The Ignition module WILL have to be replaced also as the corrosion has caused a malfunction of the board. Doug
2. Bad Ignition module
3. Wall Tstat WILL NEVER CAUSE THIS TYPE PROBLEM---NEVER.
4. If it cycles fast like in the video linked you tube, then the Hi limit switch is NOT the cause
5. Hi Limit switch can cause this, but it depends on what the OP states is the ON/OFF burner cycle time. THIS IS CRITICAL FOR HELP AND DIAG.
6. If you suspect bad LP regulator, here is a simple test. Turn on the Range burners all 3 or 4. Should have good size blue flames. Start the Furnace and watch the burners, IF when the furnace lights and those blue flames diminish or almost go out, your LP regulator is bad.
7. Last it could be as the You Tube. The Ignition module needs the update kit to relocate the ignition module. The Ignition module WILL have to be replaced also as the corrosion has caused a malfunction of the board. Doug
