Thread Tools Display Modes
Old 05-28-2008, 06:24 PM   #1
Junior Member
Join Date: May 2008
Posts: 6
2008 Units and Heated Elbows for Grey/Black Tanks Always On

I couldn't find this issue posted in the forum so I will post for those that may not know it is a problem with some 2008 units with 3 tanks (grey, galley and black)

I came across this as my 2008 8313SS unit which has 2 new 6V batteries. The batteries would go dead over a week or so sitting in the yard not plugged into shore power. I Found an article on another forum about this issue so I went and touched the grey water elbow heater and sure enough it was warm.

Basically the relay installed for the tank heaters is the wrong one. When the switch is off, the relay provides power to the grey/black tank heaters. When the switch is on, the grey/black tank heaters go off and the galley tank heater comes on.

The relay is under the shower on my model and the existing relay is a Tyco V23234-A1001-X036. As seen here.

I replaced it with a BOSCH 1 ST/PC 0332019150-3PH Relay that allows two normally open circuits.

A little info on relays can be found here for those of you like me who have no idea what 87, 30, 86 etc on your relay stand for....

Basically your relay needs to have two "87" or normally open circuits. The one it shipped with has on "87" and one "87a" (normally closed).

Simple $20 dollar fix that saves me hauling it to a dealer for a 2 week wait for repair.

Hope this might help others. Go feel you grey water elbow heater pad to see if its warm when the switch is in the off position.

sirrox is offline   Reply With Quote
Old 05-28-2008, 09:25 PM   #2
Senior Member
welshman599's Avatar
Join Date: Oct 2006
Location: Quispamsis NB Canada
Posts: 1,026
Send a message via MSN to welshman599
Welcome!!! Very interesting thread Sirrox... Never realized how the tank heater thing worked. By the way, I noticed you mistakingly created two threads for the same topic, so I've removed one. Thanks for the contribution!

  • Salem 401-2b; 31" Sony Trinitron and two channels on the antenna.
  • Smokin' hot wife... 2 boys, 25 and 10.

83 sweet sweet days camped in 2008 - not easy in my neck of the woods!
welshman599 is offline   Reply With Quote
Old 05-29-2008, 09:29 PM   #3
Senior Member
Join Date: Sep 2007
Location: Greensburg In
Posts: 785
Hey sirrox also check your fridge there is a switch to heat the seal on the fridge to stop condensation it is locatated under the top of the bottom section of your unit it will drain your battery also i was showed this by a service manager that worked on our camper just a little info for you
2008 8296SS Rockwood Signature Ultralite
2002 Silverado 2500HD extended cab
chevy02 is offline   Reply With Quote
Old 05-30-2008, 01:57 PM   #4
Junior Member
Join Date: May 2008
Posts: 6
Thanks chevy02, I'll take a look at that. The 'expert' that gave us the walk through on purchase seemed like he new his RV basics, but he was lacking alot in unit/model specifics. Being my 3rd RV I'm well versed on the basics, I need to know unit/model specifics. Nice to have the forums to learn from!
sirrox is offline   Reply With Quote

black tank, rockwood

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


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

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 06:27 PM.