Free 7 Day Trial RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Free 7 Day Trial ×


Reply
 
Thread Tools Display Modes
Old 05-22-2017, 09:47 PM   #1
Member
 
John Dorsey's Avatar
 
Join Date: May 2017
Posts: 70
Furnace fan blowing when water heater on

So we wanted a fast recovery and turned the gas and electric on to the water heater. Now the furnace fan wants to blow even though the thermostat is off. It's not even full blast blowing but only the cold air return and bathroom.
__________________
2016 Brookstone 395RL
2013 Ram 3500 DRW
2001 Winnebago Brave
1998 Rockwood popup
John Dorsey is offline   Reply With Quote
Old 05-23-2017, 08:50 AM   #2
Senior Member
 
SeaDog's Avatar
 
Join Date: Jan 2016
Location: Idaho
Posts: 10,608
Boy that is one I haven't heard of before. When you turned on the electric you used the switch at the water heater correct? Are you sure its the furnace fan it would blow at all vents if on. Let the forum know what you find and how you corrected it.
__________________
Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
SeaDog is offline   Reply With Quote
Old 05-23-2017, 12:03 PM   #3
Site Team
 
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 9,603
That's messed up!

I was thinking a bad ground, but I'm not sure if that would cause anything like that.

Have you pulled one of the fuses at a time to see if the furnace stops?
__________________
Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
Bama Rambler is offline   Reply With Quote
Old 05-23-2017, 06:09 PM   #4
Member
 
John Dorsey's Avatar
 
Join Date: May 2017
Posts: 70
It is weird, I'm inclined to agree with Bama Rambler and a loose ground. But it was also the first time we have used gas to heat the water heater so my initial thought was because the heater is under the furnace so it tricked a sensor into thinking the furnace was on. But it didn't stop so I pulled the fuse. I'll add it to the long list of warranty issues.
__________________
2016 Brookstone 395RL
2013 Ram 3500 DRW
2001 Winnebago Brave
1998 Rockwood popup
John Dorsey is offline   Reply With Quote
Old 05-23-2017, 06:25 PM   #5
Site Team
 
Flybob's Avatar
 
Join Date: Oct 2014
Posts: 13,560
Are you sure it it the furnace? The converter has an automatic fan that will turn on when 12V current draw is high.
__________________

2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
Flybob is offline   Reply With Quote
Old 05-24-2017, 07:47 PM   #6
Senior Member
 
Evereddie's Avatar
 
Join Date: Feb 2013
Location: Pfafftown NC
Posts: 2,353
Quote:
Originally Posted by Flybob View Post
Are you sure it it the furnace? The converter has an automatic fan that will turn on when 12V current draw is high.
Ding, ding, ding. I agree.
__________________
There are 10 types of people in the world.
Those that know binary, and those that don't.

2013:31 / 2014:51 / 2015:58 / 2016:37 / 2017:46
2018:16
Total 239
Evereddie is offline   Reply With Quote
Old 05-24-2017, 08:18 PM   #7
Member
 
John Dorsey's Avatar
 
Join Date: May 2017
Posts: 70
There is a lot I don't know about this trailer. I wish the manuals included a wiring diagram. The vent in the bathroom was blowing cold air and I the furnace acted like the blower was on (I went outside and heard it). But the converter fan explains the fan I hear in my bunk room. I wish I really knew how the underbelly is heated. I thought it was the big vent that looks like a cold air return but now I think it's a converter fan running.
__________________
2016 Brookstone 395RL
2013 Ram 3500 DRW
2001 Winnebago Brave
1998 Rockwood popup
John Dorsey is offline   Reply With Quote
Old 05-24-2017, 08:23 PM   #8
Site Team
 
Flybob's Avatar
 
Join Date: Oct 2014
Posts: 13,560
In many TT the heated underbelly is accomplished by one of the furnace ducts dumping into the underbelly. Not nearly as fancy as it sounds.
__________________

2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
Flybob is offline   Reply With Quote
Old 05-25-2017, 06:41 AM   #9
Senior Member
 
Join Date: Apr 2016
Location: Cedar Creek Lake, TX
Posts: 3,211
Are you sure it isn't the A/C fan blowing? Air coming from ceiling vent? If so, be sure thermostat is set to auto, not high or low.
__________________
Cedar Creek Lake, Texas
2019 Keystone Loredo 290SRL
2019 Ram 2500 4x4 Cummins crew cab
Andersen hitch
CedarCreekWoody is online now   Reply With Quote
Old 05-25-2017, 07:57 AM   #10
Member
 
John Dorsey's Avatar
 
Join Date: May 2017
Posts: 70
CedarCreek Woody it was definitely the floor vent. That 4 inch round vent and the bedroom vent are on the top of my must replace items. When the furnace is on all most all the air dumps out back there. Which further puzzled me because most of the air was coming out of the bathroom vent. Someday when I don't care about the warranty as much I'll definitely be dropping the belly to see what kind of mess is under there.
__________________
2016 Brookstone 395RL
2013 Ram 3500 DRW
2001 Winnebago Brave
1998 Rockwood popup
John Dorsey is offline   Reply With Quote
Old 05-25-2017, 07:58 AM   #11
Member
 
John Dorsey's Avatar
 
Join Date: May 2017
Posts: 70
CedarCreek Woody I only wish my AC worked that well lol
__________________
2016 Brookstone 395RL
2013 Ram 3500 DRW
2001 Winnebago Brave
1998 Rockwood popup
John Dorsey is offline   Reply With Quote
Old 05-25-2017, 09:04 AM   #12
Senior Member
 
Wolverine 1945's Avatar
 
Join Date: Jul 2014
Location: SouthWest Michigan
Posts: 5,974
Loose grounds can do some strange things,,, I once had a little Plymouth that when you turned the heater fan on,,, the speedometer would go to 0 ???
Wolverine 1945 is offline   Reply With Quote
Old 05-25-2017, 12:38 PM   #13
Senior Member
 
Join Date: Apr 2016
Location: Cedar Creek Lake, TX
Posts: 3,211
Ok, just wanted to be sure that we understood what you were saying. Unfortunately I'm no help either, that is certainly strange.
__________________
Cedar Creek Lake, Texas
2019 Keystone Loredo 290SRL
2019 Ram 2500 4x4 Cummins crew cab
Andersen hitch
CedarCreekWoody is online now   Reply With Quote
Old 06-30-2017, 09:29 PM   #14
Senior Member
 
Ron045's Avatar
 
Join Date: Dec 2016
Posts: 454
Quote:
Originally Posted by Flybob View Post
Are you sure it it the furnace? The converter has an automatic fan that will turn on when 12V current draw is high.
Where is this converter typically located? I have a 23IKSS Hybrid. I hear a faint fan noise when plugged into my shore power that a do not hear when on battery only.

I thought it was my furnace too but everything related to it on the thermostat is off. If I turn off the breaker for the furnace, the fan noise also stops.

Thanks.
Ron
__________________
Ron & Family
2021-14 Nights, 2020-10 Nights, 2019-25 Nights, 2018-30 Nights, 2017-23 Nights
2017 Shamrock 23IKSS
2022 Ram 2500
Ron045 is offline   Reply With Quote
Reply

Tags
fan, furnace, heater, water, water heater

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

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



All times are GMT -5. The time now is 02:41 PM.