Question about Heating & Cooling
I have been given one of the above by a friend - the heater comes on when the buttons are held down but won't stay on. Is there a reset button?
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Posted on Jan 02, 2017
SOURCE: reddy heater won't stay on
sounds like a Thermal Cut-off this is a small sensor that detects if the heater has ignited properly, sounds like this sensor has failed and the heater shuts off to prevent from gassing anyone
Posted on Nov 02, 2007
SOURCE: heater will not run
You don't say, but I am assuming that the motor is running and there is combustion in the combustion chamber and the heater is running fine, then the reset trips. Is this correct? If so, chances are the Safety Control (reset) is defective. Part number HA3003. The photocell could also be at fault. Check for a dirty lense on the photocell.
But---If there is no combustion in the chamber, then the photocell detects a no-flame condition and then it trips the reset.
Troubleshooting tips for a Spark Plug type heater
Posted on Nov 16, 2009
There is a flame sensor inside the burner unit. The sensor is like a photo cell that must see the light of the flame or it will tell the burner control to stop the power. You need to see if there is a soot film on the lense of the sensor and make sure the sensor is aimed straight. If the sensor is clean and aimed straight (and the problem persists) then there may be a clogged nozzle that is giving a poor flame and the sensor does not see a good flame therefore shuts down the unit. If the nozzle is at fault, then you for sure need to replace the oil filter. New nozzles are $4-8 and the size & spray angle is stamped on the nozzle. If there is still a problem, then you need to see if the pump is giving approx. 100psi pressure, then finally (the last step) would be to replace the burner control $60. Goodluck< Macgivor
Posted on Jan 16, 2010
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