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Daveb1972

Member Since 07 Feb 2012
Offline Last Active Dec 05 2014 10:25 AM

Posts I've Made

In Topic: Old Sears Forced air Heater - Pilot blowing out when Fan comes on -867.76572

05 December 2014 - 06:39 AM

Draft is likely from natural draft as the HE cools. The burner dies then the pilot dies would lead me to 2 possibilities.
1) draft diverted plugged/missing, exhaust replaced recently? Modified?
2) case to HE flange in vestibule leaky. The seam between the two may be bad.

Watch flame of main burner as fan turns on. If flame is disrupted then HE failure is likely. Look in blower housing for weird rings. If you find them (in blower housing under squerill cage) then HE has failed. Look at the seam for the heat exchanger where the burners enter. There is some surface that is common to vestibule, burner, and HE. This should have a gasket that may have failed.
Describe type of HE ie: barrel, s type etc. pictures are nice too.

I think you will see the main flame disturbed when blower starts and that USUALLY means failed HE.
Intermittent kit may solve it, or rather may avoid the issue.
You can also try a combustion analyzer and watch for co2 or co changes as blower starts (bad HE)

In Topic: Water in Induction blower

07 January 2014 - 07:15 AM

NO! It will allow combustion gasses to enter the house. What brand of furnace? Can you share a picture? The drain for the condensate is clogged and needs to be flushed. The picture/models number will help me to give you specifics on procedure, but the gist of it is the trap needs to be flushed and that will allow the inducer to throw the water, and stop this from collecting. The condensate is a natural occur acne for furnaces that are vented with PVC we call them "condensing" furnaces for that reason. They have a drain that collects the condensate from the heat exchanger and the exhaust riser then it goes to a gravity drain or a pump that gets rid of the condensate.

In Topic: Coleman Evco Furnace Model #DGAT0908DD

04 January 2014 - 08:33 AM

Have you changed the filter?

In Topic: Armstrong Oil Furnace.

30 December 2013 - 11:02 AM

RE Michels is the Armstrong distributor. They are Wholesale only but may be able to help you decide what specs the original unit had. If you still have the housing and squerrel cage you just need a motor. Grainier has HVAC PSC motors.

In Topic: HVAC blows cool air in the morning but warm in the afternoon

19 December 2013 - 12:39 PM

If the inducer fixed it then the pressure switch wasn't closing, and that keeps the igniter from lighting. This also means the gas valve should NOT have been opening. This could be a miss hearing problem, or a problem with the control. If the igniter isn't beeing activated the gas shouldn't be flowing even for ignition trial.


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