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Duo-therm furnace [message #74847]

Tue, 23 February 2010 21:44

Wander Inn

Messages: 100
Registered: January 2010
Location: Phoenix Az.

Karma: 0

Senior Member

My furnace motor would run but no fire. Removed furnace
and put on my work bench, hooked up propane & 12 volts.
It worked perfect, I though I had a bad ground. Reinsalled
the furance & again no fire. Any ideas.

Mike

Mike & Chris Hughes 1977 Kingsley Phoenix, Az.

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Re: Duo-therm furnace [message #74849 is a reply to message #74847]

Tue, 23 February 2010 22:32

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

Senior Member

Mike, are you sure you are getting gas to it when it is in the coach?
Dan
heading to Tucson tomorrow

3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer

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Re: Duo-therm furnace [message #74850 is a reply to message #74847]

Tue, 23 February 2010 23:45

Wander Inn

Messages: 100
Registered: January 2010
Location: Phoenix Az.

Karma: 0

Senior Member

Dan
Yes, I have gas to the gas valve, I can feel the gas valve clicking.
Mike

Mike & Chris Hughes 1977 Kingsley Phoenix, Az.

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Re: Duo-therm furnace [message #74853 is a reply to message #74847]

Wed, 24 February 2010 00:50

bumpersticker

Messages: 60
Registered: February 2004
Location: Redondo Beach, CA

Karma: 0

Member

I had the same problem. It turned out to be a high resistance in the thermostat. Try shorting the thermostat wires together at the furnace. If it fires off, replace the thermostat.

Bob Cook
78 Birchaven
75 Avion (In work)
Redondo Beach, CA

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Re: [GMCnet] Duo-therm furnace [message #74875 is a reply to message #74853]

Wed, 24 February 2010 08:09

Steven Ferguson

Messages: 3447
Registered: May 2006

Karma: 0

Senior Member

I had a similar problem and cleaning the points in the thermostat solved it.

On Tue, Feb 23, 2010 at 11:50 PM, Bob Cook <bcgmc@verizon.net> wrote:
>
>
> I had the same problem. �It turned out to be a high resistance in the thermostat. �Try shorting the thermostat wires together at the furnace. �If it fires off, replace the thermostat.
> --
> Bob Cook
> 78 Birchaven
> 75 Avion (In work)
> Redondo Beach, CA
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: [GMCnet] Duo-therm furnace [message #74901 is a reply to message #74875]

Wed, 24 February 2010 14:47

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

Senior Member

Hmmm, sure sounds like no gas if it works on the bench. Do the shorting of the therm wires as mentioned above. My therm wires were broke somewhere so we ran a new line from therm to furnace and it works great. Had Miguel giving me pointers or I would not have figured it out. I even took the darn thing out. But, it works now.
Hope you get it figured out before next winter.
Dan
enroute to Tucson

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Re: Duo-therm furnace [message #74985 is a reply to message #74847]

Thu, 25 February 2010 22:15

Wander Inn

Messages: 100
Registered: January 2010
Location: Phoenix Az.

Karma: 0

Senior Member

Dan.
It works, Several problems,Low battery voltage, Fan switch out
of adjustemt, mud-dobber nest on the flame sensor. It works
good, 74 today.
Mike

Mike & Chris Hughes 1977 Kingsley Phoenix, Az.

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Re: Duo-therm furnace [message #74986 is a reply to message #74985]

Thu, 25 February 2010 22:29

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

Senior Member

Great, glad to hear it. No fun on a chilli night with no heat. The nights are really not bad, in a double bed, it is that early morning rise.
Dan

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Re: [GMCnet] Duo-therm furnace [message #74994 is a reply to message #74986]

Fri, 26 February 2010 05:44

Steven Ferguson

Messages: 3447
Registered: May 2006

Karma: 0

Senior Member

Early morning rise? You? Is this really you Dan?

On Thu, Feb 25, 2010 at 9:29 PM, Dan Gregg <gregg_dan@hotmail.com> wrote:
>
>
> Great, glad to hear it. No fun on a chilli night with no heat. The nights are really not bad, in a double bed, it is that early morning rise.
> Dan
> --
> Dan & Teri Gregg
>
> danandteri.blogspot.com
>
>
>
> ///Halon Automatic Fire Extinguishers
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
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>

--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: [GMCnet] Duo-therm furnace [message #75004 is a reply to message #74994]

Fri, 26 February 2010 10:16

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

Senior Member

Oh yea, I was up at 830 this morning. Got some parts from Jim to replace. He sent me a speedo gear to match my larger tires, among other things.
I wish you would jump out and go with us across Tx. to the convention. We could put Jim in the middle.
Glad Mike got his furnace working. I just used mine while I showered.
Dan

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Re: Duo-therm furnace [message #75052 is a reply to message #74985]

Sat, 27 February 2010 03:52

Keith V

Messages: 2337
Registered: March 2008
Location: Mounds View,MN

Karma: 0

Senior Member

How could you possibly know if it works if it's 74???

Come up to Minnesota and we'll test it out. I had my furnace running a couple of days ago, it was about 5 degrees out...

Yes I'm jealous

Wander Inn wrote on Thu, 25 February 2010 22:15

It works
good, 74 today.
Mike

Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com

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Re: [GMCnet] Duo-therm furnace [message #75057 is a reply to message #75004]

Sat, 27 February 2010 06:58

Steven Ferguson

Messages: 3447
Registered: May 2006

Karma: 0

Senior Member

You never can tell Dan. We might meet up on the road, the route is the same.

On Fri, Feb 26, 2010 at 8:16 AM, Dan Gregg <gregg_dan@hotmail.com> wrote:
>
>
> Oh yea, I was up at 830 this morning. Got some parts from Jim to replace. He sent me a speedo gear to match my larger tires, among other things.
> I wish you would jump out and go with us across Tx. to the convention. We could put Jim in the middle.
> Glad Mike got his furnace working. I just used mine while I showered.
> Dan
> --
> Dan & Teri Gregg
>
> danandteri.blogspot.com
>
>
>
> ///Halon Automatic Fire Extinguishers
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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Re: Duo-therm furnace [message #75077 is a reply to message #75052]

Sat, 27 February 2010 11:53

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

Senior Member

Keith V wrote on Sat, 27 February 2010 03:52

How could you possibly know if it works if it's 74???

Come up to Minnesota and we'll test it out. I had my furnace running a couple of days ago, it was about 5 degrees out...

Yes I'm jealous

Wander Inn wrote on Thu, 25 February 2010 22:15

It works
good, 74 today.
Mike

It ain't 74 in the mornings when I get up. I had it on this morning again while I showered. Gets pretty nippy in here over night. When the sun sets in Az, it can get cold, especially at 3600 feet.
Here is the funny part, I should not tell on myself, but what the heck. I ran the wires back as far as the electrical box compartment and that is as far as I got, so far. So, I put the thermostat on the wires and have it working. I am thinking maybe Teri will drill a couple of holes in the bedroom wall this afternoon and finish up my install. It needs to be in our bedroom.
Dan

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