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I have a Lennox m/n gcs20rv-511-75-1p that the heat was

Customer Question
Hello, I have a Lennox...
Hello,
I have a Lennox m/n gcs20rv-511-75-1p that the heat was failing to kick on at random times over the past couple weeks so I had my propane company come change out the regulator at the tank and it seemed to work fine for about 4 days and now it won't fire,
the a/c comes on and works fine and I have tried resetting it (taking the temp down and turning the system off) but still can't get it to kick on.
Any ideas?
Thanks,
Jon
Submitted: 2 years ago.Category: HVAC
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Answered in 1 minute by:
2/17/2016
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago
HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 18,757
Experience: 20yrs in the HVAC industry with certificates and degrees.
Verified

Hello and thanks for using this service, if you have been waiting do not worry or get upset I am just one of the techs on here and I try to get to as many customers as I can and I just picked up your question now. Please give me time to respond sometimes I get your replies late so there may be a delay in my response.

So the inducer fan or nothing tries to start correct?

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Customer reply replied 2 years ago
the inducer fan does start
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago

Ok does the ignitor glow or what error flashes on the board when it does not light?

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Customer reply replied 2 years ago
I haven't seen an error flashing and not sure about the ignitor
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago

The ignitor may be broken on the unit I would check that visually or oh it out with a ohm meter. That could be the whole issue here Very common issue as well.

We are on the honor system for our time, all I ask is please rate my service using the STAR RATING SYSTEM on your page before you leave. If you are not happy with the service please let me know before leaving a negative rating. This is the only way I am paid or credited through the site for my time. This will also allow you to get directly back to me for FREE follow up questions and tips are greatly appreciated! Thanks

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Customer reply replied 2 years ago
does the ingnitor have 2 wires going into it and the 3 rods on the backside when you pull it out?
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago

Yes it should you may have a spark ignitor system, see if there is any black porcelain on the ignitor or if it is just metal rods.

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Customer reply replied 2 years ago
the front is white but a lot of black caked on soot on the backside by the rods
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago

Can you take a pic of it and upload it here?

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HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago

Yeah that has a lot of soot, something may not be lighting or burning right. That is a spark ignition system, clean off the rods really good with sandpaper and retry it. You may want the unit serviced by an HVAC company to inspect the manifold for any cracks.

We are on the honor system for our time, all I ask is please rate my service using the STAR RATING SYSTEM on your page before you leave. If you are not happy with the service please let me know before leaving a negative rating. This is the only way I am paid or credited through the site for my time. This will also allow you to get directly back to me for FREE follow up questions and tips are greatly appreciated! Thanks

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