No heating in my house

Old 12-24-16, 08:37 AM
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No heating in my house

My Heater won't start even we set very high temperature. On the thermostat show the system is on, but there is no air and sound of heater running. We checked on attic and don't see any flame at all, but there is a switch on attic, when I turned it off and on again, then the machine started and flame coming out, but when the heat reach to level we set in the house, the heater will stop and never start again as mention above, if we want it starts, we have to get up to attic and turn off/on switch again. We called a repair man and he said may be the coil is dirty and/or air filter dirty. I changed the air filter and repairman cleaned coil and he charged us $180, but now, machine still the same. I have called him again and he said it's hard to diagnose if the machine sometimes on/off. We tried to call him again and he never picked up the phone.
Please tell me what wrong with it. We are getting cold because there is no heat in the house.
Thank you very much!
Old 12-24-16, 09:39 AM
Join Date: May 2015
Location: USA
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Please tell us the make and model of your furnace; you will find it on a label inside the burner compartment of the furnace. There should be a panel that lifts off to gain access.

If you have circuit breakers for your house, and know which one is for the furnace, you can turn it off and back on to simulate flipping the switch in the attic without going up there. But that is only temporary method to get you some heat until furnace can be repaired.

Many furnaces have a control board inside that has one or more LEDs to indicate trouble. If your furnace has this, there will be a window or opening in the outside panel so you can see the LED's. When looking for the model number, look for the LEDs as well and see if they are flashing any code (like three flashes, 2 flashes, etc.). Be aware that the furnace will not operate with the door over the blower compartment open.

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