Lennox pulse furnace not turning on

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  #1  
Old 01-13-13, 02:22 PM
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Lennox pulse furnace not turning on

Lenox Pulse Furnace
Model Number: GSR1403-80-7

I turned off my power to install a new light fixture. When I was finished and turned my power back on my furnace did not come back on. (Yes I forgot about it and I turned the power off while it was running). The fan will come on in the "On" position but no hot air and does not sound like burner is on and nothing happens in the "auto" position. Air filter is ok. The gas is on. I checked the only power cable I could find going into it and it reads live. There is only one switch that I could find in the service panels and its for the fan. Any help or direction would be appreciated.

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  #2  
Old 01-13-13, 03:01 PM
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Well, I'm not Yuri but you have probably tripped a limit.
It may auto reset after you turn off power and allow it to cool off or you may have to hit a manual reset button.



 
  #3  
Old 01-13-13, 05:47 PM
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Houston, wrong forum, NO YURI HERE. I think you mean over at that other forum

OP, check for the limit as Houston stated.

Also have that heat exchanger pressure tested EVERY YEAR!! by a lennox certified tech.
 
  #4  
Old 01-14-13, 08:28 AM
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Result

Had a tech come out and look at it this AM after fooling with it all day yesterday. It was a tripped limit switch which is on the side of the blower... probably never would have found it even with a map and support on the phone. He also replaced my flapper valve which he said was the worse he'd ever seen in 20 years of his work. Did not checked the heat exchange pressure no my knowledge if he did he did not tell me and he walked me through everything that he was doing. cost me $144 total. $70 for service call and $74 for the replaced flapper valve. Running and just waiting for my house to get warm. Sucks that I had to have him come out to press a switch and do a repair that I could have if I had the know how. Should I call him back on the heat exchange pressure?
 
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Old 01-14-13, 02:48 PM
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Yes. I would highly recommend a pressure test on your furnace.
 
  #6  
Old 01-14-13, 08:11 PM
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Heat exchange question

Ok so if I get the heat exchange pressure checked what can I do with that information? I mean if it comes up less than perfect (are there ranges that I should know?) what would I ask them to do in that case? What can go wrong if I don't have it checked? How often should I have it checked? What does this information tell me about my furnace?

Thanks again for the reply.
 
  #7  
Old 01-14-13, 09:03 PM
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This is from the Lennox instructions...

"INSTALLATION INSTRUCTIONS FOR HEAT EXCHANGER AND VENT PIPE TEST KIT
TO BE USED WITH G14/G21/GSR14/GSR21 SERIES UNITS


11 − Even when there are no detectable leaks, test plugs
will leak slightly (especially after continued usage).
Assuming no detectable leakage of the test plugs,
pressurize the unit to 4 psig and observe the rate of
pressure loss. ANSI standard Z21.47−1993 allows all
new furnace installations to vent no more than 2
percent of the total volume of flue gases into the
living space. A leak rate of 4 psi in 10 minutes or
longer on all models of the Pulse furnace exceeds
this national standard. All Lennox Pulse furnaces
should exceed this national standard. Any heat
exchanger that reaches a pressure of 0 psig before
10 minutes has elapsed should be replaced."
 
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