Help no heat

[dcbrewer]

Our heat won't come on. The AC cooling side on thermostat works but the heat side won't come on. At first the #1 unit was all that would work on cooling and now the # 2 unit will work on cooling also, but will not work on gas heat or heat pump and it is cold, here in Gatlinburg. Need help!!

[smlranger]

Try this....remove T stat from wall, unplug telephone-like connector in back for a few seconds, then re-connect. See it that makes it work.

Since you seem to have the RVP T-stat that merges the heat pumps to the LP furnaces and supplements the heat pumps with LP when necessary, and neither of your heat sources work, I would bet the T-stat has lost its mind.

Does the T-stat have a slide switch on the bottom that gives you a gas heat or LP heat selection only? If so, move it to that position and see if the LP furnace/s try to fire up.

If you have a Coleman/RVP T-stat, these folks have technical data for most of that stuff:

Airxcel

[dcbrewer]

Down Home, is that the way yours acted when the sail switch went bad????

[down_home]

I won't say or can't that it is your problem but the sail switch causes these kinds of problems. It's in the thermostat control on ours. I believe. I say believe because someone replaced it twice for us but I wasn't there.

[dcbrewer]

Well I am home now, but the heat side of the thermostat still doesn't work, I think it is the thermostat. checked all fuses and breakers, have propane. the one stat works the two heat pumps and the two gas furnaces. The stat will switch to the heat side, and will toggle between 1 and 2 unit but will not turn them on or adjust either one. but both AC units work now on cool, it is just the heat side that won't work. and I know that when the heat is switched on that even on electric heat the furnace will come if the temp inside is much lower than the setting on stat, when the temp gets up to setting the furnace will kick off and the heat pump will keep it there till it gets to cold to get warm air from heat pump than the furnace will take over again. Can these thermostats loose their programing after they have been setup or do they just go bad.

[PastorCharlie]

Check the connections on the outside panel of your gas furnace....sometimes they loose their connections. Make sure the propane is turned on and is operating to the inside range, no air in lines. Listen for the igniter outside in the gas furnace...if it is not trying to ignite (clicking) the problem is somewhere in the electric circuit, fuse, thermostat, connectors, etc. The gas furnace only works with the #1 thermostat circuit.

If you have an EMS it may have dumped one of the circuits.

[wa8yxm]

A Well designed heat pump measures the temp both INSIDE and OUTSIDE. if the outside is below something near freezing (THe cut off temp) they will not work.

WHY: Well, they don't work well when that cold

Other well made units can work below freezing but they do special things so they work that way.

But making one like that takes more energy and weighs more.

So it could be they are below operating temp.

[Blaster_Man]

Are you trying to get the heap pump(s) to work or gas heat?

[WILDEBILL]

Un till we have more info, push some buttons flip all the switches and talk bad to it.
Bill

[abc40kids]

ArchHoagland wrote:
A little more information would be helpful.

Year, make, model...stuff like that.

Is there any brand name on your control panel?

Did it ever work or is this a newer unit?

Usually you won't ever get heat from your air conditioner unless you had heat strips added to them. Usually you will only get heat when you are set to the furnace mode.
They don't want you to be heating and cooling at the same time.

We are using an electric heater this morning as abc40kids mentioned (with 40 kids running around he probably doesn't need a heater much anyways) so I second his suggestion of a heater. Mine is the $20 variety...actually $5 at a yard sale.

ABC for Amber, Brandon and Casey ( my kids ) 40 got thrown in back when Sterling Marlin drove the #40 Coors Light car. 3 kids are all I can handle and afford!

[2ndhom]

dcbrewer wrote:
Our heat won't come on. The AC cooling side on thermostat works but the heat side won't come on. At first the #1 unit was all that would work on cooling and now the # 2 unit will work on cooling also, but will not work on gas heat or heat pump and it is cold, here in Gatlinburg. Need help!!

Would be nice if you fed us more information. How many stats? If you've checked breakers/fuses? Outside temp? You've checked the LP tank? Last time the heat worked?

[dcbrewer]

06 Pace Arrow, worked good till this trip. Back unit quit first,front would work on cool. last night when tried to turn on heat pump or furnace the heat side would not work on front or back. while fooling with thermostat the back unit started working but the heat side still won't work. Has a RV Comfort.zc thermostat. Have plenty of gas. Now both cooling units are working, but no furnaces or heat pump. RV Products AC & Heat pump units I think Coleman. Thanks for the help!!

[prism]

rgatijnet1 wrote:
My roof top Dometic AC/heat pump will still put out heat down to 37 degrees. I have heard that some will not work below 40 and some will work down to 32 degrees. I am sure that even two identical AC/heat pumps may not work at the same low temperature.
For your furnace to work, it must have 12 volts available and you must have propane available to the heater. If it is controlled by the same wall thermostat that controls your AC units, the thermostat must have 12 volts available to it.
You need to check all of your 12 volt fuses to insure that they are not blown.

If his stat or stats lite up and work for AC then he has 12V to the stat so how could the fuse be blowen? will not run electric heat or gas heat and yet both run AC ok.Either for some hard to beleive situation he has two different problems or his stat,s or stat are failing.If I was there I could give a better opinion.One thing to ad.I dont know if theres a lock out on a heat pump when a person trys to use it in real cold weather?

[rgatijnet1]

My roof top Dometic AC/heat pump will still put out heat down to 37 degrees. I have heard that some will not work below 40 and some will work down to 32 degrees. I am sure that even two identical AC/heat pumps may not work at the same low temperature.
For your furnace to work, it must have 12 volts available and you must have propane available to the heater. If it is controlled by the same wall thermostat that controls your AC units, the thermostat must have 12 volts available to it.
You need to check all of your 12 volt fuses to insure that they are not blown.

[ArchHoagland]

A little more information would be helpful.

Year, make, model...stuff like that.

Is there any brand name on your control panel?

Did it ever work or is this a newer unit?

Usually you won't ever get heat from your air conditioner unless you had heat strips added to them. Usually you will only get heat when you are set to the furnace mode.
They don't want you to be heating and cooling at the same time.

We are using an electric heater this morning as abc40kids mentioned (with 40 kids running around he probably doesn't need a heater much anyways) so I second his suggestion of a heater. Mine is the $20 variety...actually $5 at a yard sale.