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Old 11-24-2014, 04:48 PM   #1
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Lennox G14Q parts needed


I have an older Pulse furnace in my store that I need to replace the fan controller switch on. Parts houses tell me that part is NLA but will not tell me part number so I can try to find an after market part. This furnace is in excellent condition so I really need to find a replacement part. Finding Lennox part numbers on the web is impossible. I would appreciate it if someone could provide me the OEM part number and possibly an after market solution for it. Lennox model is G14Q4-80-2. Thank you.

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Old 11-24-2014, 06:06 PM   #2
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Lennox G14Q parts needed


try cozyparts.com

The control may be obsolete as it is a "timed on" type and they are mostly obsolete. There are several other obsolete parts like the gas and air flapper assemblies. I have worked on them since 1980 when they arrived. The heat exchanger should be pressure tested by a Lennox tech for cracks.

Most people are buying new furnaces due to the obsolete part issue.

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Old 11-24-2014, 06:15 PM   #3
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Lennox G14Q parts needed


i did try cozy parts also, no luck. I can not believe I would need a new furnace for fan controller switch.
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Old 11-24-2014, 06:46 PM   #4
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Lennox G14Q parts needed


That furnace came out in 1980. 34 years ago. No manufacturers stock parts 4 ever. Honeywell made the control and due to very little demand they discontinued it. All about demand and supply. No demand=no supply.

The gas and air flapper assemblies were made by a specialty company and there is no demand so they are not produced or they went out of business.

Less than 5% of the Pulse's I installed are still running. Heat exchangers crack or no parts or too expensive to repair. Every dog has his day.
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Old 11-25-2014, 09:02 AM   #5
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Lennox G14Q parts needed


thanks Yuri, I know the unit is old but it is 93% efficient so I hate to replace it. I was really hoping someone could provide me with an OEM part#, I see used controllers on ebay but don't want to get the wrong one.
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Old 11-25-2014, 09:15 AM   #6
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Lennox G14Q parts needed


Unless you live somewhere where you can afford to be w/o heat for a few days what are you going to do when the heat exchanger cracks or another obsolete part fails. You will need a new furnace at some point. Get a basic 1 stage Goodman if you want a good replacement. As a business can you not write some of it off as a expense. Finding old school techs who understand that furnace is difficult as 3/4 of them are retired.
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Old 11-25-2014, 07:28 PM   #7
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Lennox G14Q parts needed


Heatcraft FTC6-EHO1 Fan timer Lennox 76H31.

I have never seen the timer go bad it is usually the fan relay P-8-10283 66C6701 24V coil DPDT ...
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Old 11-25-2014, 07:51 PM   #8
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Lennox G14Q parts needed


That is for the G21. The G14 used a L4064 type BUT it had a timer inside to start it "timed on" or the heat exchanger would get red hot and break. Cannot substitute a regular L4064 as it takes too long to heat up.
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Old 11-25-2014, 08:15 PM   #9
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Lennox G14Q parts needed


funny thing with mine is it runs constantly, fan motor never shuts off. Blows cool air half the day.
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Old 11-26-2014, 05:35 PM   #10
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Lennox G14Q parts needed


scored a used one. Also Honeywell does make a replacement for the original , new # is L4064W1080, costs about $110.00

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