Question about Dometic Refrigerators

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Works good when rv plugged in to AC LP or AC but even if runnin in LP and I remove the power cord shuts down and red x is on , wont try to start up.

DC is good, unit has dc to back lights pump workd good.

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If it's a refrigerator problem, I would look towards the rear circuit board first. It sounds to me like you probably have an issue with your inverter. The refrigerator operates on 12V DC, not AC. So when you unplug it, it should stay on and simply start working on the LP side of things. Try hooking the refrigerator up to an independent 12V battery. It should work perfectly fine when you unplug the unit from AC at that point. You most likely have something called AC ripple caused from a bad inverter. Anyhow, checkout The Dometic Guy to see if they can help: The Dometic Guy Dometic RV refrigerator parts and products for sale

Posted on Jul 03, 2016

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  • Dometic Master
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Bad control board

Posted on May 25, 2016

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6 Suggested Answers

6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

  • 68 Answers

SOURCE: AC,DC, gas RV fridge Dometic

You more than likely need to replace the control cable between the upper and lower board. It comes as a kit with the upper board. You can also do a bypass test by unplugging your thermoster from the circuit board. The thermoster is the temperature control for the refrigerator nothing to do with the freezer.
rvtech@myway.com
www.coachtech.info
734 777 6432

Posted on Mar 18, 2009

  • 68 Answers

SOURCE: Norcold DE704D won't switch to AC

http://www.thetford.com/LinkClick.aspx?fileticket=slRtJeja7H4%3d&tabid=497&mid=1316
This link will help with testing and resolve your problem. Can not resolve without these tests.
Thanks for using Fixya
Jerry

Posted on Mar 30, 2009

  • 532 Answers

SOURCE: RV refrigerator works fine on AC power. Burns for 30 seconds on gas power then shuts off.

tap on the gas valve with a wrench,not too hard but not too light about 10 times,the valve is probably sticky from not being used,re-light and see what happens.

Posted on May 10, 2009

kd7alt
  • 1 Answer

SOURCE: Dometic RM3862 RV Refrigerator

This happens when your electrode fails. Replace your electrode.

Posted on Aug 17, 2010

kel1guy2002
  • 3740 Answers

SOURCE: Dometic refrigerator model RM 2193

Hi and welcome to FixYa, I am Kelly
Operators manual:
http://www.gas-refrigerators.com/pdf/RM2193-manual.pdf
Parts manual:
http://www.scamptrailers.com/Portals/0/Dometic_Refrig_RM2193_PartsList.pdf
If you look at the last page of the parts list (page 10) it is showing a thermostat across the Black and white wires.
There is not a fuse that I can see. The fuse has to be external to the unit. You should be able to read continuity (resistance) of the AC heating element at the power cord with the AC switch ON.
AC Power source must be removed to perform resistance checks.

No continuity there are 2 possibile failures (Other than wiring)
1. AC heating element
2. Thermostat.

Thanks for choosing FixYa,
Kelly


Posted on Jul 22, 2011

Testimonial: "very clear answer to my question i determined that the AC heating element was at fault. no connectivity as suggested in the question. "

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We have a 96 rexhall rv. we have had the unit plugged into shore power from the house and had been running the air conditioner. it ran great about 4 times and now we can not get it to kick on with just the...


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Just bought a used 1987 Real-Lite truck camper. The roof air unit is Dometic as well as the LP/AC refrigerator. When turned to "cool" the air conditioner really draws down, dims the lights, and eventually...


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Keep in mind, in order for fridge to work, you need 12 volts DC (Battery) power going to back of fridge. If the controls aren't lighting up at top, you've most likely got no 12 Volt DC power going to fridge. Check all fuses as well.

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Here are the solutions ive gathered for this problem:

================

IBM has finally given me a fix for the T21 I am working on for a

customer. I asked them "What if it doesn't work, then what. Their

response was "GAURENTEED to work". Here it is:

1.) Unplug the power cord and the battery.
2.) Press the 'Power' Button 10 times repeatedly.
3.) Then hold the 'Power' Button down for 25 seconds.
4.) Put the battery back in and plug the power cord back in.
5.) Should power up right away.

This did work THIS time on the machine I have in front of me. I hope

this works for all of you. If you have any other questions, please

feel free to email me and ask any questions

Oh and just one more thing to help you out.

This problem is caused by an overcharged capacitor (supposedly) and

the error ONLY occurs IF you leave the laptop plugged in too long with

the battery in. If you ONLY plug it in when you are using it, then it

should not overcharge. And actually I would suggest that you unplug it

about 20 min or so before you are done using the system.

=====================

I have been a IBM Thinkpad T20 user for last 3+ years and I think it

is an very sturdy system that it's been working non-stop for such a

long time with not a single problem even after so much of abuse it

went thru in my baby's hands......until last week when it just wont

boot up. Then I found this post online....I tried the refrigerator

option also to no avail. Finally I just removed the battery and AC and

let the system sit for a 2 days in a cool place near window. Third day

I plugged in battery, plugged in the AC, and voila, it comes up fine.

Right now I am backing up all my files and I'll keep you posted if it

experiences a boot problem again. If I don't post again, assume it's

all working good again !!

Bottom line is that it could be the overcharged capacitor in my case

and letting it sit alone discharged it completely.

Good luck to you!

==================

I have the same problem, and i fix it. Well no fix but now in few

seconds i can start notepad when i want to. My battery dead. Without

the battery, you can start if you hold down the power botton while you

get in/get out quickly the ac connector several times .Try it!!!!

I think the intelligent battery or same cheap condensator in the power

module is the problem (so when you connect the ac power connector you

can hear the charge of it).

you can restart without problem but if you switch off you will need to

repeat the process to start the notepad.

====================

I have a T22 that won't power on. After removing the AC power cord, I had to repeatedly (as fast as you can press it) press the power button until it powers on. I was not able to do a normal shut down, it would just hang. So with the battery removed and the AC plugged in pull the AC power cord.(Try to do it when the hard drive light is out!)I have cycled thru several power ups with no problems after doing this.
Hope this might help somebody else.
I would love to know which capacitor is being affected on the motherboard. this way you could install a momentary switch with resistor to ground to drain the capacitor.

===============

Thanx to all the authors of these solutions

Nov 08, 2007 | IBM ThinkPad T21 Notebook

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