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Old 09-21-2015, 02:08 PM   #1
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furnace wont ignite

camping this weekend with lows around 40 , we used the heat pump which workrd great but : I figured I'd try the furnace as it'll be getting below the heat pump temp of 30 next month . We have only had the A128s since june so no need to try it out . I turned the thermostst on furnace and turned up the temp to 76 the unit started to run - ran for about a minute then shut down (yes the gas is on) , retryed several times with the same result and no heat . I did find an off and on switch on the side of the furnace (was in on position ) switched to off the furnace cycled but no heat ,switched back to on and same result ? I am confused and can find no direct shut off to the unit . the owners manual is useless and the installation manual didn't shed any light . I can hear what I'm guessing is the igniter firing but not sure . Thank you
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Old 09-21-2015, 02:19 PM   #2
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In the spring it takes me 6 or 7 try's to get furnace going.
There's probably quite a bit of air in the line.



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Old 09-21-2015, 03:07 PM   #3
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Like Turbs eluded to, I'd try it several more times before giving up.

Do you have a good high flame on the stove?

I'd also check the stove flame when the furnace is trying to light, just to make sure it's not a regulator problem.
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Old 09-21-2015, 03:39 PM   #4
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There are at least 2 safety, shut off on the heater that maybe giving you a problems.
1 There is a small light weight vane in the air flow path that tell the heater, the fan is working.
2 There is a temp sensor that looks for heat. There is a igniter to light the gas. you should be able to hear it, clicking.
As other have said the easy way to check the gas is light the stove.
do a search on this site on heater will not light, to get more information.
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Old 09-21-2015, 03:46 PM   #5
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After several fail attempts, the controller shuts down to prevent propane flowing when not lit. You need to shut the thermostat off ( not just down) to reset. As mentioned, run stove for a minute or two then try again.
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Old 09-21-2015, 03:56 PM   #6
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thanks for all the great tips ,I won't be back to try them for a couple weeks . What is the electrical on/off switch do that is on the side of the furnace ,it is accesable through a hole above and to the right of the gas line ? ,and should it be in on or off ?
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Old 09-21-2015, 05:46 PM   #7
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I did not know what switch you were talking about. I went looking and found it, if it is the one in the heater. There was an accesable hole that I could see it. I have no idea what it does but mine is in the "ON" position. The on was push in.
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Old 09-21-2015, 08:07 PM   #8
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Perhaps you could try setting the temp higher to 80. 76 is a comfortable temp, furnace might not have felt it needed to run if air temp was near 76.
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