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Old 11-09-2008, 02:36 PM   #1
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Furnace doesn't work....

We were waiting for a cold day to check the little Sunline's furnace. It doesn't work. All it blows is cold air. Any suggestions or ideas.

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Old 11-09-2008, 03:20 PM   #2
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Hi Wanda

The furnace not working. Can be something simple or a little more involved but need to know a few details to help tell you where to look.

Tell us this and then can help more.

1. Model/year of your camper
2. Model/make of furnace. The newer Sunlines use Atwood Hydoflame 8500 series. Mine is a 8531.

3. Does your have electric ignition or do you have to light a pilot?

4. If electric ignition, do you hear click, click, click a few seconds after you turn it on and the blower was running?

5. If pilot light ignition, does the pilot light stay lit?

6. Does the stove burners work, actually have been primed and they can light, before you try the furnace? Trying to make sure the air is purged out of the lines before trying to light the furnace.

7. Any chance of some pictures of the furnace with the outside cover off? Then we know better what you have.

8. Does Hubby have a volt/ohm meter? Just checking so I know how deep to try and explain how to trouble shoot if this gets in deep. There are some simple things to test that does not take one, but if he has one and knows how to use it, we can dig deeper if the simples stuff does not pan out.

This should get us started on what you have and we can then help ask better questions.

Hope this helps


Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
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Old 11-09-2008, 05:20 PM   #3
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I know you have an older trailer. If you have one similar to mine, you may have an HF-8012 gas heater.

If you do the key thing to test is the pilot.

Turn the red knob to pilot, push the red pilot button in, it should move a 1/4 to 1/2 inch then depress the mechanical ignition button to the right of the pilot button until the pilot lights.

(The mechanical igniter produces a spark each time it's depressed. Is to the right of the red kno and just a little above it. It clicks when depressed.

You must than hold the pilot button in for 30 seconds or so to insure the pilot stays lit.

It is easy to see the pilot if it's dark. After the pilot is lit turn the red knob to On.

The thermostat must be in the ON position for the furnance to ignite and the temperature must be turned up. The fact that the blower comes on indicates the thermostat was set properly.

Testing the pilot is the first step. If the pilot lights and the heat doesn't come on the next thing to test is the flag switch that makes sure the blower is working.

Norm Milliard
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Old 11-10-2008, 01:23 PM   #4
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Hi Guys! Thanks for the replies. We "got it working" thanks to your help and advice.

Norm: We have the same one you have. We looked at your pics. They're almost identical right down to the pattern on the cushons. BTW, we washed the cushion covers and they look brand new! The curtains I made make a big difference also. All they had were cheap shades on the windows. A few bits of wallpaper strips and some carpets are next - then I'll take pics of our "baby" TT.

Now... on to the electric brakes, sway bar "part," hood fan and we're good to go.
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