Furnace will not heat

[Kamper Dave]

We have a Suburban Furnace in our new 2010 Cruiser CF31RE that will no longer heat.

It ran as needed for the last few nights but this morning it will only cycle 15 seconds and then quit.

It will recycle by turning it off and then back on at the thermostat. There is no noise (clicking) other than the blower. The circulation blower runs for 15 seconds and the entire furnace locks itself out again.

The water heater works as well as the stove top burners.

The outside vents are clear and not sooted.

This unit is under the refrigerator, the only access panel that is accessibleshows you the burner tubes. Outside the only thing to view is the exhaust.



Its cold. It is Memorial Day weekend andour dealer is 1500 miles away.



We would appreciate any suggestions.

Thanx

Kamper Dave

[ryeja]

I had this same problem last year on our May long weekend. I ended up taking the furnace out myself and taking it to the dealer the Tuesday after we got home and it was a defective circuit board. You sound like you have the same symptoms and unfortunatly there's nothing you can do to bypass this as it controls the gas valve. I know it sucks as we had to endure the entire long weekend without heat as it quit on the Friday after we had been already set up for 2 days and it was rainy and miserable.

At the very least you can get repaired under warrenty.

[Kamper Dave]

ryeya,

Thanks for the reply.

I will contact the dealer ASAP

Kamper Dave

[Canucklehead]

Try turning the furnace off at the thermostat for 10 minutes or so and then turning it back on. We had a similar problem with the control board on a previous trailer and this seemed to reset the furnace and get it to light again. Make sure you have the dealer look at it as soon as you can as it will continue to turn off until it is fixed.

[Virginia RVers]

We lost our heater/ac a few trips back and ended up going to walmart and purchase a oil filled heater to get us thru the weekend. Agree with other on taking it back to the dealership when you return. Tooooo new for problems already.



Better luck for the rest of your trips in 2010.

[Ridgeman]

What is the condition of your battery/batteries? You need a good 12v power supply for the circut board in the furnace. Are you dry camping? If so that furnace blower will run your batteries down pretty fast.

[Kamper Dave]

Thanks for the replys and suggestions.

We purchased two electric heaters with thermostat control to get us by.

We are pluged into a 30 amp AC site.



There are wood chips and saw dust all around the furnace. It might be that this debris is fouling the air flow sensor. I am tempted to uninstall the furnace and clean it out.



I did some testing and found the 12Vdc supply and thermostat wiring. There is 12Vdc at the furnace. I alsodisconnectedthe blue wiresto the thermostat and shorting them together. I gotthe same result. (the thermostat is not the problem).

I did some searching and there are some authorized Suburban repair shops within 100 miles.

I will contact our dealer tomorrow to see how to proceed.

Thanks Again

Kamper Dave

[cruzr4-2]

We had a furnace problem recently where the fan would run but would not ignite.

I remove the unit and took it to a dealer. They found debris in the burner area, cleaned it out and all is good again. No parts $100.00 min. labor.

Dennis