Question about Goodman Heating & Cooling
I have a robertshaw 8400 thermostat. If you switch it to a/c and turn the fan to ''on'', the a/c will properly turn on start cooling the house and the fan and cooling indicators on the display also turn on.
However if you set the fan to auto and then set the temp below the current room temp, the display indicators will turn on saying that the fan and cooling are on, but the fan doesn't actually turn on at all. This is a problem that recently started happening, it used to work fine. anyone know why this would happen?
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Posted on Jan 02, 2017
Check the data information on the unit there should be a troubleshooting guide that tells you what the two lights blinking once means. hope this helps.good luck. normally found with schematic
Posted on Feb 12, 2009
Augold, sometimes its best to set the thermostat where you "feel comfortable" . I.E. set it and leave it til you feel the need to be cooler or warmer.
A thermometer on a thermostat will not always be accurate and setting it will only get it within 2 to 5 degrees which is enough to "feel".
Now from the stand point of is it working properly????
Assume you feel comfortable and the heat stays on to keep you comfortable is their anything wrong with this? I assume this is the goal. Even if it says 90 (and you know its not 90) and your comfortable you could leave it alone and be OK. If this kind of thing is whats bothering you a new thermostat may not be much better, unless your ready to invest in one and accept it however it should be closer to the place youd set it. Id recommend an electronic type they are more accurate and level doesn't matter so much to these types.
If you want to set the temperature and are determined to go by a thermometer to "feel Comfortable" I recommend you buy an electronic thermometer and set it close by the thermostat. Make sure you have no lamps or other heat sources close to the thermostat area.
Remember the far end of a room or a chair by a window Especially with little or no curtains and on the prevailing out door wind will always feel colder and be colder than the area by the thermostat even if both are in the same room. If your too cold try running the thermostat up a few degrees. If too warm set it lower. The equipment doesn't care how cold or warm it is.You will not increase your utility bills to the national debt by being comfortable
If this helps please grade me accordingly and Good Luck.
Posted on Mar 03, 2009
Okay. Here's what I suspect in order of probability:
- low refrigerant charge
- contactor not getting 24 volts from controller (controller problem)
- bad contactor
- bad capcitor
I'd start with the charge, as suggested by mastatech. But if it is low, you'll need a service call, anyway, so pressing the needle valve may not be necessary.
I'm assuming you're not going to be taking the unit apart and testing stuff, so you'd need a service call for that as well.
I guess bottom line is, call for service. At least, I think we've ruled out simple stuff which will avoid paying for a service tech to come out and flip a switch.
Maybe mastatech has some other recommendations.
Posted on May 10, 2009
The thermostat would need to be insulated better from the air that is surrounding it. Im assuming that the thermostat is located on the wall unit where it blows out the air. This could mean that it is actually reading more from the outside temp, than whats inside the house. Another thing to consider is the location of the thermostat, even it being close to anything in the house that produces some kind of heat will effect the condition of the air. If anything, its the manufacturers mistake if it was properly installed in the first place and if defective, they should replace it. hope this helps.
Posted on Dec 28, 2009
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