Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
Jayco RV Owners Forum
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-31-2019, 09:30 AM   #1
Senior Member
 
Brightwhite's Avatar
 
Join Date: Apr 2013
Location: Alberta, Canada
Posts: 294
Coleman thermostat shoots to 22!

Weird issue with our month old Coleman rv comfort digital thermostat, end of the night we set it to 16/17ish. I'll wake up a couple hours later and it set itself to 22?!? Thought I was going crazy but I finally seen it happen this morning. Set it to 18, come back 30 seconds later and it's at 22!

I pulled the fuse this morning, didn't do anything. Thought I'd ask around here before I exchange it.

Anyone see anything like this?
__________________
'17 F150 pullin a '07 29fbs
Brightwhite is offline   Reply With Quote
Old 05-31-2019, 09:44 AM   #2
Site Team
 
norty1's Avatar
 
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,974
No but I would freeze if I slept that cold.
__________________
Moderator
2011- 351RLTS Eagle, MorRyde suspension/pin box,
2017- F350 6.7 PSD Lariat FX4,SRW, SB,CC
Hughes PWD SP-50A, TST TPMS
Gator roll-up bed cover
B&W Turnover ball, Companion Std hitch
Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search
norty1 is offline   Reply With Quote
Old 05-31-2019, 09:53 AM   #3
Senior Member
 
Join Date: Sep 2017
Location: midwest
Posts: 1,211
Quote:
Originally Posted by norty1 View Post
No but I would freeze if I slept that cold.
ROFL in Canada that is probably HOT!!
curver900 is offline   Reply With Quote
Old 05-31-2019, 10:00 AM   #4
Senior Member
 
Brightwhite's Avatar
 
Join Date: Apr 2013
Location: Alberta, Canada
Posts: 294
Not hot enough to melt the igloo
__________________
'17 F150 pullin a '07 29fbs
Brightwhite is offline   Reply With Quote
Old 05-31-2019, 10:17 AM   #5
Senior Member
 
RogerR's Avatar
 
Join Date: Jul 2016
Location: Mapleton
Posts: 4,435
You might check your voltage at the thermostat and/or your batteries.

Or maybe it is just time to replace?
__________________
2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy

Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
RogerR is offline   Reply With Quote
Old 05-31-2019, 11:19 AM   #6
Senior Member
 
Camper_bob's Avatar
 
Join Date: Sep 2013
Location: South Texas
Posts: 7,230
Quote:
Originally Posted by RogerR View Post
You might check your voltage at the thermostat and/or your batteries.

Or maybe it is just time to replace?
+1

The electronics in that T-stat are controlled by the 12V system; if you have any problem with that system and the stat loses 12V power, it will reset to "default". Mine is 72F (roughly the same as your 22C); the other night I cycled the 12V trying to trouble-shoot something and forgot the t-stat would reset. I came back a few hours later and the AC had been running the whole time trying to cool the rig to 72.

Worse yet, my rig is equipped with 2x 11,000 units, so the one main unit (the other still has the manual stat) was trying to get the whole rig down to 72. Ambient was in the low 90s.

ETA: Sorry, I forgot to add that the first thing I would do is check the connections on the back of the t-stat. They use some pretty sloppy wire nutting on those, and something could've just wiggled loose. Beyond that, I don't envy you having to troubleshoot intermittent 12V problems; I have a feeling I'll be in that boat soon
__________________

-2018 Greyhawk 29MV
-2020 Jeep Wrangler Unlimited (JLU) (Primary Toad)
-1994 Jeep Wrangler YJ (Secondary Toad)
-2014 Jay Flight 28BHBE & Ram 2500 6.4L CC 4x4 (sold)
Camper_bob is offline   Reply With Quote
Old 05-31-2019, 02:30 PM   #7
Senior Member
 
SloPoke's Avatar
 
Join Date: Apr 2016
Location: Kingman AZ and where our Seneca is today.
Posts: 3,126
Our T-stats lose the setting when the power is lost to them. When the power is restored, they default back to a specified temperature (cant remember what that is)
__________________
Steve & Stacy with Jasper (Australian Cattle dog)
2015 Seneca 36FK
Custom 27' flatbed trailer hauling:
07 Toyota FJC & Yamaha Kodiak 400 ATV

SloPoke is offline   Reply With Quote
Old 05-31-2019, 05:28 PM   #8
Senior Member
 
Join Date: Apr 2017
Location: Minneapolis
Posts: 171
As others have said the Coleman digital reverts back to the default setting of 72F/22.2C. I read that the problem was Jayco wired the thermostat power to the heater and when the fan turned on the 12 volt power dropped so low the thermostat reset. I ran a separate 12 volt line to the thermostat and still had problems. Many have switched to a AA or AAA battery powered house thermostat to avoid the issue. I switched our Coleman digital thermostat to a battery powered Lux brand and it works perfectly. Our Jayco is a 2018 and my understanding is that Jayco has switched to a different wiring system and the conversion may not work anymore.


There are a lot of threads here about switching to a battery operated thermostat. The wiring is simple if it is the older system.


Good luck,
Dwayne
__________________
2018 Eagle HT 28.5RSTS
2015 Ram 2500 6.4 Hemi
DNelson is offline   Reply With Quote
Old 06-01-2019, 10:17 AM   #9
Senior Member
 
Brightwhite's Avatar
 
Join Date: Apr 2013
Location: Alberta, Canada
Posts: 294
Thanks everyone for the info! Makes total sense now, I'll confirm by killing the breaker quickly and see if it goes back to 22. Sounds like it's time to sweet talk Amazon to take it back, 3 days over the their return policy!
__________________
'17 F150 pullin a '07 29fbs
Brightwhite is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Jayco, Inc. or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 03:24 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.