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Billy, HVAC Technician
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My Comfortmaker furnace keeps blowing cold air and the light

Customer Question

My Comfortmaker furnace keeps blowing cold air and the light is flashing 5 times about a rollout switch what can I do before calling for service cause man it's cold in here!!!!
Submitted: 4 years ago.
Category: HVAC
Expert:  Billy replied 4 years ago.

 

Hello,

 

around the flame box area you will see these-

 

there is a tiny reset button in the center. Press the button to see if it clicks.

 

Warning though...quite often a popped reset is sign of a bad exchanger and should be looked at by a professional

Billy, HVAC Technician
Category: HVAC
Satisfied Customers: 20180
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Billy and 2 other HVAC Specialists are ready to help you
Customer: replied 4 years ago.
I see a switch like you say but ther is no reset button in the middle, my unit is probably around 15 years old.
Expert:  Billy replied 4 years ago.

 

Do you have a model number? If it is a "roll out" it will have a button.

 

If it is a blower or limit switch it will not. The blower or limit will be on the front wall....the rollouts are specifically at the sides or top of the flame area

Customer: replied 4 years ago.
The model number is; GUI075A012BIN I just took out something that looks like a rollout swithch and cleaned it up a little but that didn't work.
Expert:  Billy replied 4 years ago.
Customer: replied 4 years ago.

I don't under stand what else you need I clicked on the link and didn't know what I was looking for!

 

Expert:  Billy replied 4 years ago.

 

The location of all the rollouts to make sure you located them.

page 21 has the locations of them.

Customer: replied 4 years ago.
It was the heat exchanger that was cracked!!!
Expert:  Billy replied 4 years ago.

 

I see heat exchanger crack = tripped rollout.

 

I wish you luck and hope all goes well.

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