Question about Heating & Cooling
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Posted on Jan 02, 2017
On heat pumps, the normal setting is simply an air conditioner working in reverse. The EMT or AUX heat is a supplemental heating system using electric heating elements instead of the hermetic (compressor) system. As far as why the regular heat does not work it can be one of many things. low freon charge. reversing valve not functioning. The defrost cycle not working. Take your pick. you may want to call a service man to repair it as the electric (EMT) is not as efficient.
Posted on Nov 04, 2007
SOURCE: goodman heater
OK, we will need to perform a simple test of the furnace to see exactly what is going on. Set your thermostat to 10 degrees higher than you normally do so we know that there is a call for heat. Then at the furnace, there will ba a small viewing port. Watch the blinking light and record all the patterns it blinks. After a minute or so, place your hand on the PVC vent pipe(s) to see if they are warm. If not, either the thermostat is not sending a signal to the furnace or we will need to look inside the furnace to see what is happening. But if one of the PVC pipes is getting warm, place your hand on the plenum on top of the furnace connected to the ductwork. You shoul feel the metal starting to get warm. If the blower does not turn on within two minutes, there is an issue with either the blower itself or the control board.
Getting back to if one of the vent pipe(s) don't get warm. Using a piece of duct tape or electrical tape, after removing the furnace access panel, tape the door safety switch down. The furnace will now try and cycle. A small fan attached to the vent pipe should run, then it will create suction on a pressure switch that will energize the ignitor. You will notice an orange glow thru a larger viewing port looking into the burner box. After a few seconds, the gas valve will open and the ignitor will ignite the gas. The orange glow will turn to a blue flame. Now after two minutes or less, the blower should turn on. If one of these steps don't happen, you should document it and let your technician know. As far as the blinking lights, these are diagnostic codes that will tell you where to look for the issue. On the rerverse of the access panel, there is a chart that gives a simple explanation of what the blinking represents. Again, let your technician know what you discovered. Keep in mind that the furnace will cycle or attempt to start 3 times before it will blink an error code.
Remove the tape and reassemble the access panel. Yes you will need to contact your technician but the steps you performed just saved you 30-40 minutes of diagnostic time.
Posted on Nov 26, 2007
I have a Honeywell heater i'll set my thermostat to 76 and ill turn on the heater and it would turn on... but when it get to 76 it turns off so when the temperature drops down and the heater clicks back on all i get is cold air .. it only works on the 1st time what to do ?
Posted on Dec 24, 2008
I have a goodman GMP075-3 that won't turn on. I think it is the pressure switch since I do not have a vent blockage. What is a venter and where can I find it??
Posted on Dec 30, 2008
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