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When the furnace starts to warm up before a cycle it runs for a few then shuts off and then back off and does it a few more times then it just quits

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You Need To Replace your Thermostat!!!
Go To Home Depot, Sears Or Another Hardware Store And They May Have One Just like Yours.
The Problem Is The Heater Ignites So It Has Gas And Spark So The Igniter is Good But When The Thermostat Doesn't Detect The Flame The Heater Will Then Attempt To Relight And Or Shut Off.

Your Thermostat Maybe Just Needs To Be Adjusted But Most Likely It Needs Replacement.
I'm %100 On This One.

Posted on Jan 20, 2009

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The heater runs for a few minutes and then it turns itself off it's on stable ground and everything


My furnace keeps shutting off, only runs for about 5-10 mins ...

? 5:19
https://www.youtube.com/watch?v=pEng9mtBtKk
Dec 15, 2013 - Uploaded by shannon122005
My furnace shuts off before reaching the set temperature on the... and then i turn switch back on , the furnace running about 4-5 hours and then ...

Furnace starts, then shuts off. - Home Improvement ' DSLReports Forums

www.dslreports.com > ... > Home Improvement

DSLReports
Dec 1, 2009 - 30 posts - ‎18 authors
[HVAC] My gas furnace cycles off every 6 minutes. ... This cycle will repeat a fewtimes, then usually after the second or third time everything ... How long is it after the big blower cuts on that the gas shuts off? ... Turn the furnace on, once the inducer blower is running you should read 0 volts (switch is closed).

Jan 03, 2016 | Heating & Cooling

1 Answer

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

1999 Goodman down draft natural gas furnace. It starts as normal, the burners fire and it warms up, but the blower doesn't start, after a couple minutes the burners shut down and the blower immediently...


IT SOUNDS LIKE THE FAN CYCLE RELAY OR BOARD IS NOT MAKING THE FAN COME ON WHEN IT SHOULD THE BURNER SHUTS OFF PROBABLY BECAUSE IT REACHES THE HIGH LIMIT.

Feb 03, 2015 | Heating & Cooling

1 Answer

Furnace won't stay lit. Intertherm Model M2RC-080A-16BN. Ignightor glows, flame starts and after a few seconds the flame shuts off. Then it starts the cycle again. It goes thru this cycle a fe


It sounds like the flame sensor is bad. If thats not the case you may need to replace the control board. You should make sure the flame sensor is directly into the flame.

Nov 20, 2014 | Intertherm Heating & Cooling

1 Answer

My furnace will not reach the desired house temperature in one cycle. It will run for several minutes, shut off, and repeat. It eventually reaches the desired temp but it take a long time and I feel it...


There are a few different reasons for short cycling of a furnace.
1. Inadequate air flow. Not enough air moving through the furnace can cause it to overheat and trip the high temperature limit switch.
check to see that all registers are open and returns are not blocked.
2 Improper heat anticipator setting on thermostat. Some thermostats have a heat anticipator and too low of a setting can cause short cycling.

4 Partially blocked drain hoses. If the condensate backs up into the furnace it can shut the flame off and then when the condensate drains the furnace starts again. Check all drain hoses to make sure they are clear.
These are just some of the possible reasons for short cycling .
Hope this helps.

Dec 26, 2013 | Heating & Cooling

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Furnance kicks on but will only heat to about 13- 14 degrees then kicks off.... this happened last year and it was the flame sensor so it could be that again if so where is the flame sensor located? or...


usually if the flame sensor is dirty, the burners will light and then go out after about 3-4 seconds. it sounds like your furnace is staying lit for quit awhile and i would not suspect a flame sensor. I would look more at an air flow issue. if the furnace it running long enough to warm the house up 13-14 degrees. i would check the air filter to see if it may be dirty or even if you have a large enough opening for the filter to allow good air flow. you could have a situation were you are either not getting enough air to the furnace, or not being able to get rid of the heat being generated and causing the furnace to shut off on high limit. normally if a furnace shuts off on high limit, the fan will continue to run until it cools down and then it will fire back up. this may continue a few times. sometimes if a furnace trips on high limit too many times, it will lock out for a few hours before trying to light again. I would make sure you have plenty of air getting to the furnace and make sure all the supplies are open and not blocked. is this a problem that just started. did you just purchase the house and it has always worked this way. any information regarding the history of the unit would help narrow down the problem. also if the unit has a/c on it, it may have a dirty coil that is restricting air flow.

Nov 19, 2010 | Heating & Cooling

2 Answers

My heater will kick on right away but after 3-5mins it stops producing heat then a few mins later it will start heating again. Why?


The furnace could be shutting off on High Limit ...means your furnace is running too hot...check your filter and make sure return air vents are clean and clear....also it can be the Heat anticipator in your thermostat...which controls how many times your furnace cycles...basically your furnace should come on and off 5-6 times/hr ....need more info on your type of furnace and type of thermostat

Oct 19, 2009 | Holmes Products HCH4062 Ceramic Compact...

1 Answer

Limit Switch


It is rare that a limit switch goes bad. It is a safety control. If it is shutting off your furnace there is a problem that it is protecting you from.
If the limit switch is shutting the unit down your furnace is overheating. Check the filters. Check for any obstruction in the blower assembly. Check to see if you can raise the blower speed. Make sure all registers are open in the house. Your evaporator coil could be obstructed if you do not take good care of your filters.

Feb 28, 2009 | Goodman GMS90703BXA Heater

1 Answer

Furnace starting


Hint number 1, get HVAC license. One mistake or misunderstanding and you could blow your house up.

Feb 21, 2009 | Heating & Cooling

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