Why is my direct fired heater not working?
If you’re renting a direct fired heater that isn’t working, and want to save yourself a trip from a service technician, there are a few things you can check first. The most common problems that can be easily solved are, no electrical source, no fuel source, dirty spark plug, and dirty flame sensor rod.
What to do if your gas heater wont light up?
If there is a spark but the heater will not light up, try using a lighter or burning spill to light the gas. If you still can’t get it to light, verify the following parts are in working order so you can be sure the gas is making it to the burner.
What should I do if my unit heater does not turn on?
Exhaust blower runs constantly with 120volts applied and no thermostat wires connected to the unit. Nothing operates. If the exhaust blower does not come on, check for 120 volts at the CMB terminal on the control board. If 120 volts are present, replace the motor, if not replace the board.
Why is the flame sensor on my heater not working?
After tipping your heater up, you’ll see the flame sensor rod at the top of the direct fired heater. It will probably be corroded and dirty, which is the reason the heater won’t stay lit. Take your sand paper or emery cloth and clean off the rod of all dirt and corrosion.
If you’re renting a direct fired heater that isn’t working, and want to save yourself a trip from a service technician, there are a few things you can check first. The most common problems that can be easily solved are, no electrical source, no fuel source, dirty spark plug, and dirty flame sensor rod.
If there is a spark but the heater will not light up, try using a lighter or burning spill to light the gas. If you still can’t get it to light, verify the following parts are in working order so you can be sure the gas is making it to the burner.
Exhaust blower runs constantly with 120volts applied and no thermostat wires connected to the unit. Nothing operates. If the exhaust blower does not come on, check for 120 volts at the CMB terminal on the control board. If 120 volts are present, replace the motor, if not replace the board.
After tipping your heater up, you’ll see the flame sensor rod at the top of the direct fired heater. It will probably be corroded and dirty, which is the reason the heater won’t stay lit. Take your sand paper or emery cloth and clean off the rod of all dirt and corrosion.