...Test for 24v between C and Y. You must bypass the safety switch on the door prior to testing because that switch will cut off the power to the furnace. If nothing then you have a thermostat problem. ...
...test the furnace. With a short piece of wire (2-3" long), strip off 1/2 inch of the insulation on both ends. Secure one end on the R terminal where you removed the red wire from your thermostat. Take ...
...the one on the Y terminal. Go to the condensing unit outside and test the 2 18 gauge wires there. the 2 readings should be the same. If you have any trouble with anything, please write me back. ...
Question about Heating & Cooling
...test it? could a heat limiter be interfering with 24 volts getting to the furnace valve? Yes. There could be a couple of high limit safety devises in the circuit that can open the circuit to the gas ...
...terminal. If you still remember the where the 4 wires were connected to the White Roger thermostat, take note of the name of the terminals the 4 wires are connected to. That may help as sometime the ...
...test you can do. Take the front cover off. Locate the R terminal and the W terminal. Get your self a short piece of wire small diameter say 18 gauge. Now take your wire and jump across the two ...
...furnace to the thermostat, then jump "R" terminal to "G" terminal, the fan should come on, then jump "R" to "W" the heater should come on, if the fuse holds after testing the problem is either with ...
...Test by pulling of the cover and jumping the R terminal to the Y terminal and if it works then, you have a faulty thermostat. Faulty capacitor- This is located on the outside unit in the electrical ...
...terminal after the fan starts. When it stops, do it again.If it works each time it is bypassed, the heat anticapator in this stat is at fault and this is why it will not fire the unit when it is time ...
...furnace comes on it hums. The pilot lights and flames come up but it's not heating the house like it should. check the fan capacitor first. its a little silver flat battery looking thing near the ...
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