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Old 03-07-2015, 01:43 PM   #1
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Furnace issue



Our furnace is giving us a little bit of trouble. We have a 2015 Jayco BHFS. We can turn it on with the thermostat.. it will run.. but it blows cold air. We don't hear the click that we normally hear when it kicks on. Propane is full and the fuse isn't blown... can anyone help!?
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Old 03-07-2015, 02:52 PM   #2
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Not my speciality, but ... it sounds like it's not getting propane; are the propane tank(s) turned on? If equipped with the auto changeover then is the selector pointing to a tank?

You can prove/disprove this no propane delivery by firing up the stove top.
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Old 03-07-2015, 03:02 PM   #3
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I would start simple like Wrascal said and start at your two propane tanks. make sure that the valves are open on them and that the tank selector is pointed at a tank and not vertical. Next I would check on the outside of your coach where the heater is and remove the panel on the front of it. Inside there is a circuit board that checks to make sure you are getting the correct amount of pressure from the propane tanks and also tells it to ignite if all that is fine. Some boards have some trouble shooting lights on them and you might be able to see it. We don't pick up our 375BHFS until next week so I don't have pictures for you.
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Old 03-07-2015, 05:21 PM   #4
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Quote:
Originally Posted by b.kalinowski08 View Post

Our furnace is giving us a little bit of trouble. We have a 2015 Jayco BHFS. We can turn it on with the thermostat.. it will run.. but it blows cold air. We don't hear the click that we normally hear when it kicks on. Propane is full and the fuse isn't blown... can anyone help!?
Yes the selector is pointing towards a tank...
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Old 03-07-2015, 05:32 PM   #5
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Quote:
Originally Posted by Wrascal View Post
Not my speciality, but ... it sounds like it's not getting propane; are the propane tank(s) turned on? If equipped with the auto changeover then is the selector pointing to a tank?

You can prove/disprove this no propane delivery by firing up the stove top.
The ignition on the stove top doesn't work but I just use a lighter all the time..
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Old 03-07-2015, 08:16 PM   #6
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I believe that you've misunderstood me. Can you NOW light your stove top? If so then you've eliminated the things that I think are the most likely culprit. It doesn't matter how you fire it, the question is does it work?

If you CAN still fire the stove top then you've eliminated these easy things: no propane in the tanks, the tanks are turned off and/or not properly switched on thru the auto switching device.
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Old 03-07-2015, 08:22 PM   #7
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Yes.. stove top lights.
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Old 03-07-2015, 08:36 PM   #8
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So in my current coach if I have low pressure from my propane tank my heater will not stay lit even though my water heater and stove will still work. The reason I don't think that is your problem is because you stated that you do not hear it trying to ignite (thats what that clicking noise that you heard was). Have you tried putting a full propane tank on? If that doesn't work then it will be either your thermostat (which I don't think it is) or the board on your heater might be bad. I have replaced two in three years on two different coaches. Try the new full propane tank first and see if that changes anything. Stay warm tonight.
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Old 03-07-2015, 08:49 PM   #9
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Flow control on the propane tank is inhibited if you open the tank too fast. Try turning tank off, bleed system, and opening very slowly.......
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Old 03-07-2015, 08:50 PM   #10
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Disconnected the wires from thermostat w and r, connect them and see if it works. If the fan still stay on then it is hi limit switch. It is above the burners . Two wire will go to it make sure you disconnect the power and connect the two wires , make sure the wires don't make contact with metal. Put the power on and your furnaces will work.
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