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rear furnace heating front furnace nothing

My front furnace will not come on nor will the front heat pump. Everything works in the rear.  When we started our trip last week both areas were working.  The not allow me to do anything.  When I try to set zone 1 the screen goes blank and does nothing but I can set everything in zone 2.

Any help would be appreciated as we are in northern Alabama on our way to Raleigh NC.

Bill

Bill, Andre', Winkie Cat
2003 U320 3820 PBDS
Build # 6131
2006 Jeep Rubicon
Motorcade # 17466

Re: rear furnace heating front furnace nothing

Reply #1 –
Bill, Do a search for the type of thermostat that you have, somewhere here is the instruction on doing a reset .
Hopefully Jim F will chime in on this, I would GUESS a thermostat as rear works.
Gary B

Re: rear furnace heating front furnace nothing

Reply #2 –
Gary
Thanks for the reply.

On my coach there is only one thermostat and it is in the front. There is one in the vanity area but it only works for the shower area.  I will check for reset as soon as we get stopped for tonight.

Thanks for helping a newbie to a Foretravel coach.

Bill
Bill, Andre', Winkie Cat
2003 U320 3820 PBDS
Build # 6131
2006 Jeep Rubicon
Motorcade # 17466

Re: rear furnace heating front furnace nothing

Reply #3 –
Bill, That one thermostat controls both front and rear, see if you have it set to ZONE 1 or ZONE 2, I can't recall exactly how the buttons work but it will probably indicate, Heat-Cool, Zone Etc. Also controls aqua hot, but the guys with AH will have to help you there.
Do you have the documentation on the thermostat ?

Gary B

Re: rear furnace heating front furnace nothing

Reply #4 –
Quote from: mr bill –
My front furnace will not come on nor will the front heat pump. Everything works in the rear.  When we started our trip last week both areas were working.  The not allow me to do anything.  When I try to set zone 1 the screen goes blank and does nothing but I can set everything in zone 2.

Given it's a 2003, this is a 5 button Dometic thermostat, correct?  Is it displaying any errors when you turn the thermostat on? 

ETA a quick Google search turned up this troubleshooting guide http://bryantrv.com/docs2/docs/ccc5.pdf

Reset procedure appears to be:

16. SYSTEM RESET
a.  Turn the ON/OFF switch to ìOFFî position.

b.  Simultaneously depress and hold the MODE and ZONE
push-buttons while turning the ON/OFF switch to ìONî.
FF should appear in the LCD display until the MODE
and ZONE push-buttons are released.

c.  When a dip switch is turned on or off after initial configu
ration, a system reset will need to be done before the
Comfort Control Center TM will recognize the updated se-
lection. See figure 11
.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: rear furnace heating front furnace nothing

Reply #5 –
This coach should have Aqua Hot not a furnace.
The selected media item is not currently available.Bill&Doris 97 U270 36'
University of Parris Island Class of 66
Semper Fi  Build# 5174 MC#17094

Re: rear furnace heating front furnace nothing

Reply #6 –
I spoke with David at MOT and we checked everything and he has determined that the thermostat is not communicating with the front a/c and that we need to have the motherboard checked. David gave us a contact here in Asheville, NC but the number had been disconnected.  Spoke with Keith late this pm and he gave us the number to Camping World.

If anyone knows of a repair facility in Asheville that does Dometic a/c work, please let me know.
 
We do have an aqua hot but still cannot get the front to come on. 

As always, thanks for everyone's help.
Bill
Bill, Andre', Winkie Cat
2003 U320 3820 PBDS
Build # 6131
2006 Jeep Rubicon
Motorcade # 17466

Re: rear furnace heating front furnace nothing

Reply #7 –
    
Quote from: mr bill –
I spoke with David at MOT and we checked everything and he has determined that the thermostat is not communicating with the front a/c and that we need to have the motherboard checked.

If anyone knows of a repair facility in Asheville that does Dometic a/c work, please let me know.
 
                    Try Tom Johnson Camping Center over in Marion. Large facility and they have a nice campground on site.


(Edited to include quote for clarity - Michelle)
Dean & Deirdre

2012 Arctic Fox 22GQ
Was 2003 U270

Re: rear furnace heating front furnace nothing

Reply #8 –
FoFum member/FT owner Ratbug also lives in that area, maybe he's got a favorite place.....

Re: rear furnace heating front furnace nothing

Reply #9 –
Jim Frierich is a Commercial Member here, he lives  in NE and repairs those things, drop him a PM on the Forum, he may be able to quickly help you.

Re: rear furnace heating front furnace nothing

Reply #10 –
Mr Bill, if one of your outside bay doors opens over where the front furnace is there is a limit switch on the door frame that keep the furnace from coming on if the door is open to keep it from melting. I hit mine one time and bent it, it would not allow the front furnace to operate.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: rear furnace heating front furnace nothing

Reply #11 –
Quote from: bbeane –
there is a limit switch on the door frame that keep the furnace from coming on if the door is open to keep it from melting

Quote from: Bill Willett –
This coach should have Aqua Hot not a furnace.

Bruce, as Bill W. says, since this is a 2003 U320 thermostat, a 5-button Dometic CCC will say "Furnace" but it's actually controlling a zone of the Aquahot. 
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: rear furnace heating front furnace nothing

Reply #12 –
With an aqua hot, there is no limit switch for the bay doors
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: rear furnace heating front furnace nothing

Reply #13 –
Thanks everyone.  Since the back furnace is working, we decided to wait until we get home to have it repaired.
Bill, Andre', Winkie Cat
2003 U320 3820 PBDS
Build # 6131
2006 Jeep Rubicon
Motorcade # 17466