Go Back   Keystone RV Forums > Keystone Tech Forums > Repairs & Maintenance
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 11-19-2018, 03:06 PM   #1
Soundchaser
Junior Member
 
Join Date: Sep 2018
Location: Moorpark
Posts: 4
Rear thermostat blows fuse

I have a 2012 Fuzion 310 toyhauler. It has two thermostats and two a/c units. The fuse in the garage thermostat (the actual thermostat, not on the panel) blows on the second thermostat whenever I try to run the heater. The heater works fine on the first unit, and the A/C and fans work on both units. It is only when I try to run the heater on the second thermostat that it blows the fuse. (and the front unit continues to run fine) I bought the unit used and did not check the rear thermostat for heating so I don't know if this is a new problem or not.

I figure I have a short to ground but have a couple of questions. I assume the wiring from the first and second thermostat terminate at the same place on the furnace, so shouldn't the second first thermostat shut off when the second does. Also, both thermostats look exactly the same, but the fuse in the rear thermostat is a different size (shorter in length) with a slightly lower rating. The fuse holder is shorter, it is not because an incorrect fuse was used.

Thanks!
__________________

Soundchaser is offline   Reply With Quote
Old 11-19-2018, 08:11 PM   #2
travelin texans
Senior Member
 
travelin texans's Avatar
 
Join Date: Nov 2017
Location: Picacho Peak Rv Resort
Posts: 1,337
Unless both the units are equipped with heat pumps only one should control heat as there's only one furnace. If I were guessing the t-stat in the rear will not control the furnace. If it's a heat pump it would control that & would produce heat til the outside temps got down to 38-40 degrees then only cold air.
The front t-stat if a heat pump should operate as a heat pump til the temp inside drops 3-5 degrees below t-stat set temp then furnace should fire up. With no heat pump the furnace should start up.
__________________

__________________

Danny & Linda
Fulltime since '08
2013 Redwood 36FB (FOR SALE)
2013 Denali 3500 DRW D/A
travelin texans is offline   Reply With Quote
Old 11-21-2018, 07:41 AM   #3
ctbruce
Site Team
 
ctbruce's Avatar
 
Join Date: Dec 2015
Location: Kansas City
Posts: 3,045
A second furnace or heater is probably just a heat strip. It will be inside of the air conditioner unit underneath the cover. You'll have to pull the cover off and look and see. It will be towards the front and have fins. On mine it plugged in on the side. If you do a YouTube search you will probably find some additional information on it. It is not connected to the main furnace in any way.
__________________

Chip Bruce, RPh
Kansas City, MO
2016 Impact 312
2017 Silverado 3500HD SRW
ctbruce is offline   Reply With Quote
Reply

Tags
fuse

Thread Tools
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
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RV is a registered trademark of the Keystone RV Company.


All times are GMT -8. The time now is 09:59 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.