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I have a Johnson aire ease ultra 90 gas furnance. I also have a outdoor wood furnance that has its own thermostat. On the original thermostat I turn the blower in the on position. I then set the outdoor furnance thermostat to the desired temp and when it needs to raise the heat the blower turns on. I am currently having issues with the blower kicking on and off really fast several times and finally stays on for a short time. I have not noticed any temperature change in the house and am wondering if the relay for the motor control is going out of if its the blower motor itself? Are there any tests I can perform?

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I would first eliminate one furnace from the equation, the exterior wood furnace... turn its tstat down. Will the gas furnace then operate normally? Can you run the blower manually, as in summer mode? Make sure your filters are clean also... that can sometimes overload the blower.

Posted on Apr 12, 2017

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Therinnaiguy
  • 1420 Answers

SOURCE: Rinnai RHFE-1001FA

Have a technician check the temperature slection slide for either corrosion or pitting

Posted on Aug 30, 2007

Therinnaiguy
  • 1420 Answers

SOURCE: goodman gmp075-3

I am confident the technician(s) have done this but check anyway.
Gas pressure 4-7 inches W.C for natural, 10 - 11 for Propane.
Air filter clean and unrestricted.
Temperature over supply plenum 140 degrees F.
All registers open and unrestricted.
Vent and intake unrestricted and not blocked.
Condensate hoses free of debris and draining.

OK now lets check to see if the furnace is staying on long enough.When it runs for a heat cycle, is the flame staying on until about 2 minutes prior to achieving the set temperature or is it cycling everyfew seconds and never reaching temp? To check you will need to view the flame through a small viewing port of thru the fins in the front door. Watch them for 10 to 15 minutes.

If they are staying on a long time, we will need to see if the room blower is working properly. If they are going out quickly and or cycling. Get the technician on the pone to talk it over. It could be a safety sensor.

If the blower stays on and the burners are on as well, you have a door open somewhere. Just kidding. Remove the thermostst documenting which wires go where. Take the white wire and cross it with the red wire. This will (or should) turn on the furnace. Clamp them together untill the either the house gets warm or you are confident it is not going to reach temperature. If it did get close to the temperature you wanted, it is a thermostat issue. If not, you got me!

And they say we have an easy job! Get beck to us with your results.

Posted on Jan 23, 2008

vanni7
  • 163 Answers

SOURCE: furnace blower motor turns on with no flame burning

Hi!!! You might have a bad flame sensor its a single rod located in the burners its white..If the unit runs and then shuts off and on and off.change your flame sensor..Good luckk..

Posted on Jan 04, 2009

machtcl1
  • 61 Answers

SOURCE: Forced Hot Air Heating system doesn't maintain thermostat setting

It sounds like you may have issues with the furnace. A qualified professional can go over the system and the house to let you know if the system and unit are properly sized. The poor performance of a furnace can be a sign of carbon buildup in the furnace.
Good luck, hope this helps.
Matt

Posted on Jan 10, 2009

  • 2920 Answers

SOURCE: Heater blower problem

under the hood of the car on the passenger side you will see a round motor sticking up.thats the blower motor there should be 3 screws holding it in place and one plug to unplug.you lift the old motor out and put the new one in in its place

Posted on Jan 13, 2009

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