Question about Goodman GMS90703BXA Heater

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Seems that furnace runs every 5-10 minutes

Thermostat anticipator is set correctly. Just seems the unit runs more than it should.

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  • Goodman Master
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Check air filter is clean also automatic fan control settings try that first

Posted on Jan 08, 2009

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WHAT SHOULD THE heat anticipator BE SET AT ON A MODEL COAT066BDA COLEMAN EVCON FURNACE


The typical starting point for heat anticipation is .4 amp. If you do not have a clamp-on ammeter, adjust it to .45 and observe operation for a few days. If not quite right and still short cycling slip it to .5. Then keep doing this until you are satisfied cycle time is correct.

If you have an amprobe or can borrow one, remove the stat and take a single loooooong thermostat wire. Attach it to the R or Rh and wrap it around the clamp on ammeter ten times then attach the other end to the W terminal. The furnace will initiate the heat cycle at that point. Observe the amp reading on the amprobe when full heat is on, DIVIDE that reading by ten (for the wraps of wire) and adjust the heat anticipator to THAT setting.

Feb 05, 2015 | Coleman Heating & Cooling

2 Answers

Model sf35f furnace wont quit heating after reaching thermostat setting


Sounds like the heat anticipator in your thermostat is either bad or out of adjustment. Turn of the furnace power. Remove the thermostat wires from the thermostat. Turn the power back on. Connect the white and red wires together. The furnace should start up. Let it run a couple of minutes. Then disconnect the wires. The burners should shut off immediately. The blower will continue to run for 60 to 360 seconds then shut off. If this happens replace your thermostat. If the burners continue to burn, then your problem is either the furnace or the thermostat wires.

Sep 12, 2014 | Heating & Cooling

1 Answer

Furnace start stop cycle


On properly sized furnaces there are a few controls to look at. Check the settings of the fan switch. If these are unchanged then there may be a reason the furnace is shutting off due to poor air flow and resulting high temperature. Check filter and verify air flow is good. It may be possible that a safety switch is failing and intermittently on and off. Are all the covers securely in place and hitting any safety switches? If not seated properly the cover may loosen when the fan runs and the switch shut off the unit. There is often a flame roll out switch that could have been strained. Lastly, has the thermostat been working long? Thermostats have internal heaters to stop the furnace which is called a heating anticipator. If the thermostat is near a heat source (heat duct, refrigerator, oven, person, hot water pipe), worn out, anticipator is set wrong (older electric thermostats have adjustable settings) or covered (yes, I have seen some covered) then the free room air cannot measure correctly and the thermostat cannot control what it cannot accurately measure. Of all these possibilities I would start with the thermostat and proper furnace air flow, second check the fan/high limit switch and third go component by component through the wiring diagram looking for defects in each component. If available follow the manufacturer's troubleshooting guide.

Jan 11, 2014 | Rheem Heating & Cooling

1 Answer

My themorsat stop working,and I replaced the batteries.


see this causes and fix it. God bless you

Furnace Produces No Heat Possible Causes


Possible Repairs
  • Remove cover of thermostat and loosen screws holding unit to wall. Level the thermostat. Re-tighten screws and replace cover.
  • To adjust the heat anticipator, please see Heat Anticipator Adjustment.

  • Furnace Turns On and Off Frequently ("short cycling")Possible Causes
  • Dirty thermostat components
  • Heat anticipator not set correctly.


Possible Repairs

Sep 30, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

I have installed a new Honeywell CT87 non-mercury manual thermostat. It runs but the the furnace turns off the room temperature alway at or beloe the furnace setting so the furnace turns back on again and...


Hi, these mechanical thermostats have what is called a heat antcipator on them. If you remove the cover you will see in increments or numbers such as 1.0, o.1, .2, .3, .4 or o.1, 2, 3, 4, . The stat and main gas valve work together and have to draw the same amount of amps to cycle the unit properly. This stat will have a copper arrow pointing at a number. A good place to start is to set it at .4. If the unit does not cycle right, set it at 1.0 and go from there until it cycles. Let it go through several full cycles during each time you adjust it until it is correct. These are good dependable stats as I have many on my service truck. If it doesn't take care of the problem, take it back and return it for one that is not faulty which happens often. Best of luck to you.
Ps, the small manual that comes with a new stat has that information on it, anticipator settings.
Shastalaker7
A/C, & Heating Contractor

Mar 11, 2011 | Honeywell CT87B ROUND HEATING&COOLING...

1 Answer

Furnace comes on after two or three minutes off.furnace seems to run to often.


If the blower only runs it is likely due to a dirty filter or too many vents blocked or closed. Sencondly if the furnace runs more than you remember before installing the new thermostat look for an adjustment (sometimes called heat anticipation) and select fewer cycles per hour, this will allow a little lower temperature before it comes on hence fewer cycles per hour.

Mar 03, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

HAVE A BRAND NEW GKS90904CX FURNACE. IT RECYCLES EVERY 2-3 MINUTES.WHAT WOULD MAKE THAT HAPPEN?


Hello
In the thermostat is a anticipator which controls the cycles.

Either the anticipator is set wrong or the thermostat is bad.

Feb 02, 2010 | Goodman Heating & Cooling

3 Answers

Furnace kicks on every 15 mins


fuanace may be oversized and is short cycling it heats up house to fast it is better when they run longer

Dec 06, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Have a Coleman Evon Furnace, manufactured for Zone 1, in my 1998 Module Home. Have had 4 thermostats put on . Everyone has the same problem. Works fine for first week and then will not read correct temp....


Hang a small thermometer next to the thermostat to see how much it is off by. You did not mention what kind of thermostat you have been installing. Check in the instruction manual to see if it has a heat anticipator. Some thermostats have a small winding (heater) inside it that will anticipate the temperature raise and turn off the heater a few degrees before set poit. If this was not set, this would be your problem. If it is factory set, sometimes they come with a small resistor that must be installed in the wiring to help with the anticipator. If you find that the thermostat is still way off, yes you may need to relocate it. Kitchens can fool thermostats by the heat from the stove and refrigerator. You can either relocate the thermostat by changing the location of the wires and base or install a wireless unit that is easily mounted where you want without running wires.

Aug 18, 2008 | Heating & Cooling

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