Home Repair Forum - Lennox G26 furnace shuts off after 5min

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10-27-2003, 09:08 AM

vikes69

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Join Date: Oct 2003

Location: gaithersburg, md, USA.

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Lennox G26 furnace shuts off after 5min

I have Lennox G26Q4/5-125-1 furnace. Sicne starting it this fall unti runs for about 5 minutes and the shuts off. I have been trouble shooting it for a couple of days but it will not restart until after about 3 hours after shutoff. The Johnson Control Ignition Control (G77GRGD-10) has the LED on when it is working but it shuts off when the unit trips. It seems like the pressure switch and overtemp switch
are okay. I am ready fto replace the Ingnition module but I am not sure it is a symptom or the problem.

Thanks in advance

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