Question about Dometic Refrigerators

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Dometic RM 3662 not working on gas or AC power. I've changed the heat element, I can see the flame of the burner. What's going on that the unit won't cool off. Tried gas for 5+ hours and the fridge seemed to get warmer. Trying on AC now but not looking good.

Posted by Evan Jones on

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1 Answer

Arcticold Refrigeration Ltd

  • Official Brand Answer
  • 73 Answers

When running on Electric insure that the rear coils of the cooling unit are getting warm. If the refrigerator is level and the coils are warm and the refrigerator does not cool then you more then likely will require a replacement cooling unit. I have attached a small video that may help with the diagnoses. You can also give us a call toll free 1-888-782-6665 ArctiCold Refrigeration We keep it cold


Dometic RM 3662 not working on gas or AC power. - efdd671d-d368-41d4-b7e4-d542030ab707.jpg

Posted on Mar 24, 2014

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5 Related Answers

Anonymous

  • 93 Answers

SOURCE: Dometic rm 2652 fridge works on a/c. i get a check

you may need to change the thermocople this cost about 12 dollars this is what make electricity to epen the gas valve thanks from gilles

Posted on Mar 15, 2009

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Anonymous

  • 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.
[email protected]
www.coachtech.info
734 777 6432

Posted on Mar 18, 2009

Anonymous

  • 68 Answers

SOURCE: Dometic rm 2612. Shuts down on gas.

Ron;
Check the burner assembly. 1 screw, remove the sheet metal cover and clean it. The burner collects rust. This is the likely. Other issues would be the gas pressure usually checked with a manometer. Should 11" of water column. If your furnace works good then the gas pressure is probably ok. Also could have a faulty ignitor which sends a miliamp signal back to the circuit board. Check the burner first, after that leave the cover off and turn the fridge on. Watch the ingnitor attempt to lite the burner. Be sure the spark is going to the burner and not shorting out on the sheet metal it is mounted in. If it is shorting to the frame the ignitor needs replacing.
Thanks for using Fixya
Jerry

Posted on Mar 31, 2009

VtToolMan

Mark

  • 704 Answers

SOURCE: Just bought a tent trailer with a Dometic Fridge.

You need to make sure that you follow the manufacturer's recommendations for using the unit with each specific power source. It's important that you have the all switches in the proper position, based on what power source you're using.

Here's the manual for your model, save a copy and print it out and take some time to review the section #3 Operating Instructions on page 6.

http://www.alcovr.com/DATA/MANUEL/DometicRefrigeratorModelsRM2191&RM2193.pdf

Hope you find this helpful and will resolve your issue.

Posted on Jul 30, 2009

VtToolMan

Mark

  • 704 Answers

SOURCE: Dometic rv fridge runs fine on elec, lights on gas

It is key that all control switches are in the correct position, depending on what power source you are using, gas, electric, etc. If the switches are not in the proper setting, the unit will not operate.

Here's the manual for your fridge that should be printed out for your use and reference (and reading enjoyment). It has all the info needed to operate and troubleshoot it.

Typically, when using any gas appliance with a pilot light, the sensor has to first be hot enough to trigger it to allow the safety gas shutoff to open and allow the gas to flow to the pilot/burner. Follow the instructions and you should be all set.

http://gasrefrigeration.net/dom_techdata/2707_2811SM.PDF

Hope you find this helpful and best regards!

Posted on Jul 30, 2009

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1 Answer

Dometic RM2611, Freezes fine, Refrig OK on AC, but warms up when on LP gas. Can I safely increase the orifice size from #53 to #58? Thinking that will increase the flame and produce more heat.


Check the gas regulator and the lines for particles of dirt. You have modified the refrigerator it is going to take some work to find what is wrong. Don't modify the orifice from what it calls for.
APPLIANCE 911

Aug 27, 2016 | Dometic Refrigerators

1 Answer

Dometic refrigerator troubleshooting rm 3662,


Hi, It is more then likely the heating element or a fuse in the electronic board located on the rear of the refrigerator. The heating element is located on the right hand side looking at the rear of the refrigerator. It is the probe like item that protrudes from the duct work with two black wires attached. You must disconnect the wires from the board then take the door off of the duct work, the the heating element will slide upwards to remove it. Please feel free to contact us 1-888-782-6665
ArctiCold Refrigeration We keep it cold

Aug 17, 2014 | Dometic Refrigerators

1 Answer

Dometic refrigerator model RM 2193 for RV works only in the DC and LP Gas mode. two days ago the AC mode was still working and stopped yesterday (outside temperature was about 40 degrees...


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


Jul 22, 2011 | Dometic Refrigerators

1 Answer

RM 2652 RV refrigerator runs on gas, not on AC. Power surge took out power converter and refrigerator power module. Replaced converter and power module. All display panel lights working. Cools great on...


just had same thing happen to mine. replace control board. starting working on gas. one the ac I then replaced the ac heating element and now working great on ac

Mar 21, 2011 | Dometic RM2652 Refrigerator

1 Answer

Will not run only on gas but will not cool


If it works on gas and NOT electricity then the heating element is not getting power or the heating element is open. The heating element is located on the tubing just aft of where the pilot flame is on the bottom of the copper tube. You should check for power to the heating element and with power off perfom a continuity check on the element. I really do not at this time think you have a heating element problem.

There is a 120VAV element a AND a 12VDC element. The chances of both of these failing at the same time is pretty slim.

There is a note in the manual:
If the gas only pushbutton is depressed the
lamp will illuminate green and the refrigerator
will only operate on the LP gas mode, even if q
120 or 12 volts are available.

Another significant change in the third
generation A.E.S. system is how the 12 volt
heating element mode operates. As with the
first and second generation series, the 12 volt
heating element circuit is energized by the
ignition lock terminal. This terminal receives
its DC voltage from a wire that runs from the
run side of the vehicle’s ignition switch to the
refrigerator’s ignition lock terminal. This
allows the 12 volt heating element to be
energized only when the RV is traveling down
the road.
When the ignition lock terminal is energized
by the ignition key, the printed circuit board
must see at least 13.3 volts DC for a period of
40 seconds before the system will activate the
12 volt DC heating element.
If 13.3 volts is not achieved in this time frame,
the electronics will light the LP gas burner and
the refrigerator will operate on the LP gas
mode.
LOWER THAN 13.3 V.D.C. =LP Operation

If the battery voltage remains low after the
delay cycle, the automatic controls will light
the refrigerator on the LP gas mode and stay
on the gas mode until the printed circuit board
sees approximately 13.3 volts DC to the
terminal block.

For proper cooling on the AC mode, the AC
voltage to the refrigerator should not vary
more than 10 percent from the voltage rating
on the heating element. Heating elements used
in Dometic refrigerators could have a rated
voltage of 110 volts, 115 volts or 120 volts AC.
Because of this, the power requirements for
each differently rated heating element will
vary. For example, if a heating element is
rated for 100 volts, the acceptable power range
would be between 99 to 121 volts AC. If an
element is rated for 115 volts, the acceptable
power range would be between 103.5 to 126.5
volts AC. If the heater is rated for 120 volts,
the acceptable AC power range would be
between 108 to 132 volts AC.

The unit to operate on either AC or DC must have 13.3 volts to the unit. I think this is where your problem lies in that the battery voltage is less than 13.3 VDC


If all of that checks good just repsond here and I will help you. There is still more that can be checked.

Thanks for choosing FixYa.

Kelly

Aug 24, 2010 | Dometic RM2652 Refrigerator

1 Answer

Dometic RM2193


well the flame must not be correct...make sure the burner is pushed up in the flu properly.....if the element does not get the correct heat it will not work properly.

Jul 26, 2010 | Dometic RM2193 Compact Refrigerator With...

1 Answer

My dometic rm 2612 stops working at least once a day the check light goes on.


Your 'frige has either; a 12 volt power supply or, a gas flame to circulate the refrigerant gas to cause absorption refrigeration to work; check or, replace your power supply as it 1. holds open the gas valve relay, 2. heats the gas with a heating element.

Mar 30, 2010 | Dometic RM2620 Refrigerator

2 Answers

Dometic RM 2800 Works great on AC but not on LP


Most likely cause is a blocked gas jet in the main burner its rare for the thermostat to be faulty but you cant dismiss it

Jul 27, 2009 | Dometic RM2652 Refrigerator

2 Answers

RM2652 WORKS ON GAS NOT ON AC ALL FUSES OK POWER


www;
Unplug the fridge. Remove the cover from the circuit board, unplug the 2 wires going to the heat element and do an Ohms reading should be 35-45 Ohms. If the Ohms is good then you need a circuit board as long as you have checked the 110 volt fuse on the circuit board.
Thanks for using Fixya
Jerry

Mar 30, 2009 | Dometic RM2652 Refrigerator

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