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1990 jamboree rv heater not working

Heater shouts out cold air....thermostat is set to 90 but no warm air

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Check heater box filter

Posted on Nov 23, 2013


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Posted on Jan 02, 2017


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How to replace my RV coleman-mach thermostat and upgrade it to a newer wifi thermostat like a NEST or ECOBEE?

I am familiar with a NEST thermo. The color of the wires on the RV should conform to AC standards of which there are none.

Power to the device is a serious consideration. Contact the manufacturers support BEFORE purchasing. Discuss their product in your proposed application.
The residential standard power is 24 vac. If your RV provides this voltage, then installation is straightforward. The NEST may have a solution to this if it is a problem in your application.

With the problems involved, I would have to recommend the PROFESSIONAL installation option mentioned in the NEST directions. If you have the tools, skills and knowledge to resolve any issues then do it! I can vouch for the NEST thermostat's durability. It has been subjected to rough handling, changing homes and power outages.

I love my NEST and it is much smarter than needed but I can check and set it from any internet access. Nest Learning Thermostat 3rd Generation Stainless Steel Works with Amazon...

Oct 11, 2017 | RVs

1 Answer

1988 Ford Jamboree no power to the water pump & hot water heater

There are repair videos on YouTube for the 1988 Ford Jamboree C-Class Motor Home. I'm not sure what the problem is that you are having. Is it no power in the wiring in the unit to run the water pump and water heater?
Also at there is a listing of several repair manuals and other helps.

Aug 22, 2017 | RVs

1 Answer

Holiday Rambler Vacationer RV duo-therm comfort control doesn't work

see if 12 volts from thermostat to air unit if you jump thermostat and voltage to unit possible bad motor

Apr 05, 2017 | RVs

1 Answer

Just purchased 1993 coachman RV heater works but ac doesn't ac did come on yesterday morning when wife turned up thermostat because she was cold

check for a problem climatic control unit
if the ac gave out cold air when the thermostat was adjusted , it indicates a control problem rather than an ac problem
take it to an accredited ac specialist shop for a proper diagnosis and quote

Jul 29, 2016 | RVs

2 Answers

1976 dodge 360 b300 rv jamboree wont start, spark only in key off position

Check for a bad ground - causes weird readings especially when using a digital meter. use a cheap analog meter that draws a bit of current. digital meters can give you confusing readings like showing voltage when there's nothing readable on an analog meter.

Jun 14, 2014 | RVs

2 Answers

Hot waterer tank goes on but no hot water

Water heater must be FULL of water first. Be sure to bleed all air out of hot water lines all throughout the unit. Check water in heater by purging the PT valve at the top. (The one with the little lever). If no water comes out, there is no water in the heater. You can't heat water is there's none in it to heat!

Apr 18, 2014 | Fleetwood 2008 Terra 33L

2 Answers

Electronic ignition hot water heater (6gal) lights but wont get water hot. The red light inside my RV goes off and back on after about 3 minutes. When I checked the unit outside, the pilot is lt, but not...

check to see if setiment has settled on the pilot....blow it out with air if it has. This issue comes up often with water heaters and rv refers. If that is not the problem and the pilot remains lit, but never increases when the thermostat is turned up, you probably need a new gas valve/thermostat.

Feb 26, 2014 | Jayco RVs

1 Answer

Electric heater problems.

Plug in a ceramic 120 volt or oil type space heater to keep trailer warm. Most travel trailers are propane only, they do not have electric heat strips. I would bet that is why it only blows cold air.

Jan 28, 2014 | Open Range 2011 Mesa Ridge MR243F

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