Dayton 3E372B Fuel Trimmer

check the igniter circuit--gas feed --thermocouple --fan-vent safety

look for a bad gas solenoid valve: Spark is working, no flame = no gas getting to the igniter. Do you have gas? Is the main valve open?

Find where the gas line connects to the gas valve on the back of the heater, from the gas valve, follow a small aluminum tube going into the back of the heater. There may be a removable door to access the pilot assembly. If there is no aluminum tube, the unit has electronic ignition and no pilot lite. Turn the gas knob to off, then to pilot. Hold the gas valve in and with a long match or gas grill lighter, light the pilot. Continue to hold the knob in for about 30 seconds. After that, release the knob and check to make sure the pilot stays lit. If so, rotate the knob to ON. The thermostat will kick the burners on.

Hi,

Sounds like the blower motor is bad and then the unit is kicking off on high limit....

Probably nothing you can do with out getting a new motor to replace the bad one...

heatman101

I have the same heater,every winter I have to bleed the gas line & push the spill switch on the heater. hope this helps you

could be the reg on the gas line at the meter , is there gas to the rest of the house , check pressure at meter , and at the heater first .

Hi blow heater out with air line flame sensor could be dirty check out pressure switch jump this out see if it lights

if it has a power phile on it then you would get pilot and no gas , change the power phile if this is the case ,

hope this helps

Does the main blower fan kick on? Also, if the heater is vented outside via a flue pipe, there may be a small (about 3 or 4 inches in diameter) vent fan that kicks on to ensure the exhaust fumes are evacuated through the flue pipe. If there's a problem with that fan, the burner won't light either.

buy a new heater