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Re: A solid red light
If you have the economy button on turn it off. If there is a draft around the room sensor it will read much lower than the room. That should make the heater run wide open all the time however. Make sure the screens and fan blades are spotless. When it is 4 degrees outside your heater may be working very hard to try to heat the room.
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Dec 18, 2012 - Uploaded by JRESHOW .
cause this fault. 2 RED FLASHES: This indicates that thenormally open pressure ... The furnace will lock out for one hour and then restart. 7 RED FLASHES: This fault code indicates that the flame could not be established. This no-light ... problem. Bothheating and cooling operations will be affected. Check
There maybe a few issues. They have multiple safeties on furnaces. With this in mind this process to find the problem would take a Technician to check these safeties. It could be a flame sensor or thermocoupler each senses a flame or heat to keep the gas going. Also the damper for the flue must open for the gas to stay on. There may be more safeties on this and each safety sends a 24 volt current back to control module in order for the gas valve to stay open. If these aren't being met it will try around three times and go into a lock out mode which will keep gas shut off entirely.
Solid red is normal, no call for heat. Try jumping (in the FAU) between the R and W thermostat terminals on the circuit board. Be sure when you do that the interlock safety switch is on delivering power to the heater, the red light is on. Also be careful not to touch the R side to any ground, it may blow a fuse within the circuit board. If that works, try jumping from the thermostat itself (remove the thermostat and jump the red and white wires) if that works, your thermostat has failed... replace. If jumping the terminals in the FAU fails to run the inducer fan I suggest you call a technician, as something in the circuitry has failed and will probably need to be replaced. If jumping from the thermostat wires fails, then the wire is broken somewhere between the thermostat and the FAU (either by literal break, or a signal interruption... like a security system or zoning system). Good luck.
not knowing wich one is on, this red light could be your power indicator light..
it stays on during any operation,
you should be able to see it through the sight glass
if it were flashing,,,, there would be a problem