Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 10-02-2016, 03:21 PM   #1
Junior Member
 
brian t's Avatar
 
Join Date: Mar 2015
Posts: 8
2004 Holiday Rambler Imperial Water Heater

Hello All-

This problem is on my 2004 Holiday Rambler Imperial motorhome. I recently attempted to replace the 120V water heater switch with a replacement because the old one did not illuminate when it was on. Otherwise it worked as expected. I'm guessing I mis-wired the new switch when I installed it. When I rocked the switch after installing it there was a momentary dim of the 12V lighting in the kitchen area. I reinstalled the old 120V switch but it no longer worked, nor did the LP water heater switch. I checked fuses and breakers in the rear panel and was not able to find a problem. My fuse panel in the bedroom area has a 15A F5 for the water heater, which was good, and a single leg breaker for the Suburban water heater which was not thrown. After reading posts on this subject on the forum I ohmed all fuses in this panel and found no problems. I was not able to detect 12V at either the LP or 120V switch in the kitchen area. I did find the relay for the water heater behind the 50A panel (R4) and it had 120V at Breaker #4 and Relay #4 terminals. The relays are soldered to a Model 760 50 Amp Smart EMS Controller. It looks like I lost control (LP and 120V) to the water heater. Have I missed a fuse or other simple fix? Any help would be appreciated.

Yes, better is the enemy of good enough

Thanks
__________________

__________________
2004 Holiday Rambler Imperial 38PKD
brian t is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 10-02-2016, 03:46 PM   #2
Senior Member
 
BFlinn181's Avatar


 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 12,918
Does the WH work on LP gas? That would indicate the control board is O.K. You can also go thru the checks in this document. I realize your set up is a bit different since the 120 v power is managed by the Smart EMS Controller. I think that's your step after the above, make sure the relay or control board didn't go bad in it. If you search online perhaps you'll find a troubleshooting manual for it.
__________________

__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is online now   Reply With Quote
Old 10-02-2016, 06:00 PM   #3
Junior Member
 
brian t's Avatar
 
Join Date: Mar 2015
Posts: 8
No, the gas switch to the water heater no longer works either. Thanks for the suburban troubleshooting link.
__________________
2004 Holiday Rambler Imperial 38PKD
brian t is offline   Reply With Quote
Old 10-02-2016, 06:09 PM   #4
Senior Member
 
BFlinn181's Avatar


 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 12,918
If you do an online search for your exact Suburban model of WH, you'll find more specific troubleshooting and testing instructions.

Try pulling the fuse to the WH for 5 minutes or so to reset the control board. You could also just use the battery disconnect for the house batteries to reset the WH.
__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is online now   Reply With Quote
Old 10-02-2016, 06:53 PM   #5
Senior Member
 
jacwjames's Avatar
 
Monaco Owners Club
Join Date: Jun 2014
Posts: 3,758
Check to make sure there is not an inline fuse to the vicinity of the two switch, I seem to remember someone finding an inline fuse to that location.

Also, the 120 volt water heater switch is actually a 12 volt switch that controls a relay for the water heater circuit. On my Windsor there is a small separate electrical box mounted on the wall behind the main panel. On my coach there are actually 2 relays in the box,one for the water heater and the other is for the engine block heater. The water heater circuit going from the EMS 750 panel goes to this panel. If you flip the switch the relay closes and the circuit energizes the 120 volt circuit as long as the EMS system allows it. You might check this relay.
__________________
Jim J
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi
jacwjames is offline   Reply With Quote
Old 10-03-2016, 05:16 AM   #6
Junior Member
 
brian t's Avatar
 
Join Date: Mar 2015
Posts: 8
Thanks for the additional inputs. The MH batteries were disconnected when I locked it up Sunday afternoon so that should address the recommendation from BFlinn181 to disconnect power. I have a schematic for the water heater circuit and I don't see an inline fuse near the kitchen WH switches. I have located the EMS panel jacwjames mentions and the WH relay does not respond to switch inputs. This jives with the fact that I was not able to measure 12VDC at either the 120V or LP WH switch in the kitchen. The Monaco/Holiday Rambler schematic 38040954 Diagram, Water Heater Wiring, shows the fused 12V signal coming off the rear fuse panel through a couple of connectors to the WH switch as a green switch input power signal that when closed should provide 12V to the WH relay pin 85 to turn it on. I think that's my homework, to verify the presence (or lack of) of 12V at the switch. I can also just short the green and gray WH switch wires and look/listen for WH relay closure.

General question: if the WH relay is bad what's the next step? It's soldered to the SMART EMS board. Is the entire board replaced? I'm eeing them online at $150-$200 and up.

Thanks for all the inputs, I appreciate it. I will take another run at it when I get a chance and report back.
__________________
2004 Holiday Rambler Imperial 38PKD
brian t is offline   Reply With Quote
Old 10-11-2016, 05:34 AM   #7
Junior Member
 
brian t's Avatar
 
Join Date: Mar 2015
Posts: 8
Thanks for the replies with all the good suggestions. I live in Melbourne FL and recently evacuated the area for hurricane Matthew. While hunkered down in a Lakeland RV park I had some time to look into this problem a little further. Turns out jacwjames was spot on with his suggestion to look for a local fuse. There is an undocumented 12VDC 5A fuse in the vicinity of the switches in a fuse holder screwed to the sink cabinetry. And it was blown. It apparently supplies 12VDC inputs to both LP and 120V water heater switches. I only had to take one cold shower.

Thanks again!
__________________
2004 Holiday Rambler Imperial 38PKD
brian t is offline   Reply With Quote
Old 10-11-2016, 06:29 AM   #8
Senior Member
 
jacwjames's Avatar
 
Monaco Owners Club
Join Date: Jun 2014
Posts: 3,758
Good to know that my memory is still somewhat in tact.
__________________
Jim J
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi
jacwjames is offline   Reply With Quote
Old 10-11-2016, 07:32 AM   #9
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 16,615
That fuse is part of the RV wiring and not the heater itself, so any "documentation" of it would come from the RV manufacturer, not Suburban.
__________________
Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL
Gary RVRoamer is offline   Reply With Quote
Old 10-11-2016, 07:52 PM   #10
Junior Member
 
cte202's Avatar
 
Holiday Rambler Owners Club
Join Date: Mar 2013
Posts: 25
Good Tracing Brian!
__________________

__________________
Tom Elmore

2006 HR Ambassador 40DFD
cte202 is offline   Reply With Quote
Reply

Tags
heat, heater, holiday rambler, water, water heater


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Door Lock for 1995 Imperial Rambler (Holiday Rambler/HR) Seajet Class A Motorhome Discussions 4 07-09-2016 11:55 AM
Signal Lights on 2004 Holiday Rambler, Imperial tjenkins MH-General Discussions & Problems 1 12-04-2013 09:31 AM
2004 Holiday Rambler Imperial fulltimereh Class A Motorhome Discussions 3 02-23-2010 05:24 PM
Holiday Rambler Imperial? Oh-one Monaco Owner's Forum 18 02-29-2008 07:30 PM
Solar Panel Installation in Holiday Rambler Imperial Bob Graham RV Systems & Appliances 2 10-07-2007 11:35 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:56 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.