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


Reply
 
Thread Tools Display Modes
Old 08-11-2020, 01:38 PM   #1
Junior Member
 
Join Date: May 2020
Posts: 5
Dometic RM2351 Control Board

I received my new control board (lower) for my Dometic R2351. Before I had nothing now it will work on propane but I get a check light when on AC.

I have done the following.

Checked all input voltages into the control board.OK
Checked signals from from the upper control board.OK
Checked thermistor resistance. 8K @ ~ 40 degrees
Checked heater resistance. 84.3 (175W element)
Checked fuses. (on control board)
Checked AC ripple on DC lines. Nominal 5VAC
Checked all grounds associated with the control board.

I did order two control boards. I have one waiting in the wings but am leery of putting another board in until I find root cause.

Ideas, suggestions or something I missed.

Cheers

Tim
Garlicfarmer is offline   Reply With Quote
Old 08-11-2020, 03:35 PM   #2
Site Team
 
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 9,850
Normally the Check light means that it tried and didn't sense a flame in LP mode.

Here's what the service manual says about the check light being on.
1 DC Volts
2 Wiring
3 LP Gas
4 Manual Gas Valve
5 Solenoid
6 Orifice
7 Burner
8 Thermocouple
9 Lower Circuit Board

It lists the sections in the manual that have the testing procedure for each item.

Do you have the gas on when running on AC power?
__________________
Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
Bama Rambler is offline   Reply With Quote
Old 08-11-2020, 03:55 PM   #3
Just as confused as you
 
Scrapper's Avatar
 
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 5,108
Quote:
Originally Posted by Garlicfarmer View Post
I received my new control board (lower) for my Dometic R2351. Before I had nothing now it will work on propane but I get a check light when on AC.

I have done the following.

Checked all input voltages into the control board.OK
Checked signals from from the upper control board.OK
Checked thermistor resistance. 8K @ ~ 40 degrees
Checked heater resistance. 84.3 (175W element)
Checked fuses. (on control board)
Checked AC ripple on DC lines. Nominal 5VAC
Checked all grounds associated with the control board.

I did order two control boards. I have one waiting in the wings but am leery of putting another board in until I find root cause.

Ideas, suggestions or something I missed.

Cheers

Tim
Do you have the service manual? If not here it is.
Attached Files
File Type: pdf DometicRefrigeratorS_M_New.pdf (2.42 MB, 103 views)
__________________
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, Seasonal since 2000.
Car Shredder Op/Tech, Scrap Metal Recycling - retired
Scrapper is offline   Reply With Quote
Old 08-11-2020, 04:04 PM   #4
Junior Member
 
Join Date: May 2020
Posts: 5
Thanks for the recommend on the board vendor. It now DOES work with LP. The "bad" board did nothing. The new board works fine on the LP. It's when I go to AC that the check light comes on. I have the LP on with the AC off. When I turn the
AC back on the gas shuts off and with AC I believe is the priority that is correct. If I take away the AC the LP comes on.
Garlicfarmer is offline   Reply With Quote
Old 08-11-2020, 04:05 PM   #5
Junior Member
 
Join Date: May 2020
Posts: 5
Thanks so much. I'll dig a little deeper with the manual. thanks again
Garlicfarmer is offline   Reply With Quote
Reply

Tags
dometic

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 06:19 AM.