Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-15-2014, 06:32 PM   #1
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 2,327
Phantom Power Drain Found!

I wasn't looking for it, but I found one. I was looking to see if I could change the wiring in my 2001-vintage Dometic fridge so that the light would only come on if the master power switch (their words, not mine) was on. I was surprised to find that the refrigerator compartment light and it's switch are wired in parallel with the humidity control door frame heater power source. If your fridge has this feature, you must turn it off regardless of whether or not the refrigerator itself is on. While the manual states that you should tape the door switch down to turn off the light and turn the heater switch off when charging sources are not available, wouldn't it have been simpler to drive those circuits from the "master power switch"?
__________________

__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 09-15-2014, 06:42 PM   #2
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
You wonder if anyone who designs some of these things ever has actually used them in the field. What a dumb system. I guess one always should park with hookups.
__________________

__________________
idroba is offline   Reply With Quote
Old 09-15-2014, 06:42 PM   #3
1 Rivet Member
 
Currently Looking...
2011 Interstate Coach
N. Middlesex , Vermont
Join Date: Jul 2009
Posts: 15
Blog Entries: 5
I replaced my Dometic recently and the battery is draining fast when on gas mode -- will check my situation. Thanks for the post -- I suspect it will help.
__________________
dickmfield is offline   Reply With Quote
Old 09-15-2014, 07:01 PM   #4
Rivet Master
 
Lily&Me's Avatar

 
2006 22' Interstate
Normal , Illinois
Join Date: Jan 2009
Posts: 13,569
Quote:
Originally Posted by Al and Missy View Post
I wasn't looking for it, but I found one. I was looking to see if I could change the wiring in my 2001-vintage Dometic fridge so that the light would only come on if the master power switch (their words, not mine) was on. I was surprised to find that the refrigerator compartment light and it's switch are wired in parallel with the humidity control door frame heater power source. If your fridge has this feature, you must turn it off regardless of whether or not the refrigerator itself is on. While the manual states that you should tape the door switch down to turn off the light and turn the heater switch off when charging sources are not available, wouldn't it have been simpler to drive those circuits from the "master power switch"?
It makes my eyes cross just to read this.

Understanding it is not an option for me.

My frig does not have a light, so hopefully none of this applies to me.


Maggie
__________________
🏡 🚐 Cherish and appreciate those you love. This moment could be your last.🌹🐚❤️
Lily&Me is online now   Reply With Quote
Old 09-15-2014, 07:55 PM   #5
Rivet Master
 
1994 30' Excella
Mississauga , Ontario
Join Date: Jun 2004
Posts: 939
I think I read somewhere that when operating on gas there is a power draw to keep the gas solenoid valve open.
Al
__________________
Al and Jean

TAC ON-3
BigAl is offline   Reply With Quote
Old 09-15-2014, 08:12 PM   #6
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 2,327
Question

Maggie,
Do you have a humidity control switch? If you don't know, we can look at it next weekend.

Big Al,
Yes, but the light runs and the door heater heats when the fridge is OFF, as in not operating from either shore power or propane. So if you store your trailer with no shore power and turn the refrigerator OFF, the light will come on if the door swings open.. I solved that problem by taking the bulb out. But I never imagined that the door heater would run if the refrigerator was OFF. Placing the store switch in STORE or disconnecting the battery solves both problems, but it's still a dumb, illogical design.

Al
(Some call me "big Al" as well)
__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 09-15-2014, 08:12 PM   #7
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
Maggie: I thought the Interstate had a 12 volt compressor electric refrigerator, not a propane one. If it does, no it does not apply to you.

BigAl: Most recent RV refrigerators have circuit board and electronics to let gas into the burner and to light it and monitor it. The post is about the light in the box and the mullion heater between the freezer and refrigerator and how stupidly difficult they are to turn off to eliminate their unnecessary power draw, especially when the refrigerator is shut down.

The normal power draw for the electronics and gas valve is in the range of 0.35 to about 1 amp, depending on the model, age and make of the refrigerator itself.
__________________
idroba is offline   Reply With Quote
Old 09-15-2014, 08:47 PM   #8
Rivet Master
 
Lily&Me's Avatar

 
2006 22' Interstate
Normal , Illinois
Join Date: Jan 2009
Posts: 13,569
My Interstate is a 2006.

The frig runs on electricity or propane.

If there is a humidity control switch, I know nothing of it.


Maggie
__________________
🏡 🚐 Cherish and appreciate those you love. This moment could be your last.🌹🐚❤️
Lily&Me is online now   Reply With Quote
Old 09-15-2014, 09:02 PM   #9
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
Maggie, Ah, I think some Interstates have only compressor electric refrigerators. Most small propane refrigerators have no humidity control switch. Usually they are single door units and no mullion heater is needed. I don't know why one is needed on the two door ones either, but I don't live in a humid area.

I doubt you need to worry about it at any rate.
__________________
idroba is offline   Reply With Quote
Old 09-16-2014, 07:02 AM   #10
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,649
What specific model of fridge do you have?

Perry
__________________
perryg114 is offline   Reply With Quote
Old 09-16-2014, 05:28 PM   #11
1 Rivet Member
 
Currently Looking...
2011 Interstate Coach
N. Middlesex , Vermont
Join Date: Jul 2009
Posts: 15
Blog Entries: 5
I don't have a switch on my DM2652. Here's something I found elsewhere:

"In some models there is in fact a switch to turn the heater off but the DM 2652 lacks a switch. The electronics needed to run the fridge uses only around .27 amps, the heater adds about 1.09 Amps.
You can modify your refrigerator to turn off the heater. Remove the cover over the interior light and you will find two red wires. The heavier wire carries the 12 volts to the heater. Cut this wire and the heater will be off. "


Not sure I want to go this route but ..... battery is draining fast as is.
__________________
dickmfield is offline   Reply With Quote
Old 09-16-2014, 06:24 PM   #12
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 2,327
I have been looking at the DM 2652 manuals because that is what I thought I had, but after the comment I went and checked the label on the inside of the door. The schematics in manuals show the switch, but the text doesn't mention it for the DM 2652.

My fridge is an RM2652 and it does have the switch, which is located inside the freezer at the right edge of the trim at the top of the door. I have to bend down and look up at the underside of the trim to see it.

Al
__________________

__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Reply


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
6V upgrade - bad batteries or huge phantom drain? Phantom Batteries, Univolts, Converters & Inverters 12 05-05-2010 01:20 AM
has anyone measured phantom loads? soultrip11 Electrical - Systems, Generators, Batteries & Solar 2 02-24-2005 09:21 AM
Solar and the Disconnect Switch/Charging/Phantom Loads Xray Generators & Solar Power 9 01-23-2005 12:55 PM
battery: phantom load, or normal discharge? Chuck Batteries, Univolts, Converters & Inverters 12 08-25-2004 01:13 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:02 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.