Select Troubleshooting Subject in Menu Above ⇑
Ever ask – Where do I get started fixing my Dometic RV fridge? This page has a step-by-step troubleshooting logic tree. It covers most all problems that can occur with a Dometic fridge & includes 'How To' videos!
MENUS
The above menu items list all the repair subjects for each part and system on your
Dometic RV fridge that are necessary for
how to fix a fridge that is not cooling.
HOW DO I DO IT?
Below on this page are:
INSTRUCTIONS: Select the symptom that best suits your situation, click the subject and the logic tree will open with the next question or a solution.
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This photo shows a plugged condenser; by just looking around many RV fridge problems can be fixed.
Because the owner had a Fridge Defend on his Dometic,
and the Fridge Defend keep tripping, the owner had to find out why?
It turns out that it was just this simple; the condenser became plugged with insulation from the RV,
the fridge cooled poorly on both shore power and LP Gas (propane).
In our 48 years of RV refrigerator, automotive electrical, and RV systems troubleshooting,
we have come to find that most problems are simple to solve.
Do it Yourself (DiY) fridge repair is what we promote because you have all the facts,
but we are also here to help. All Fridge Defend safety and reliability device owners get consultation
for fixing their fridge.
OVERVIEW: The following test requires the temperature sensor to be in a glass of water within the
refrigerated space.
The glass of water is to offer thermal mass, but most wireless fridge thermometers will
work because they have the mass of the batteries in the sensor within the fridge.
TEST: Run fridge with either a functioning thermistor and the fridge temperature on the lowest setting;
or disconnect the thermistor and run fridge for 6 to 8 hours.
By discounting the thermistor, the fridge will run full-time,
thereby eliminating any errors in the thermistor.
For the following size of fridge, the thermometer should read:
3 to 6 cubic foot Fridge: 43°F or less at 90°F ambient temperature.
8 cubic foot Fridge: 43°F or less at 110°F ambient temperature.
Freezer Compartment: 12°F or less (thermometer water not needed for this test).
We give the viewing option for either YouTube (green border) or our webpage (blue border) showing the same video (no ads or pop-ups).
YouTube Player
Fridge Defend Player
VIDEO: This video shows the components on an RV fridge. This is the index for the remainder of the Complete RV Fridge Repair Series. This video shows the back side of the fridge including propane (LP Gas) components such as the Gas Control Valve (SOV), Burner, and Boiler Assembly, along with other cooling unit components such as Electric Heaters. Also, inside the fridge the thermistor and cooling fins are shown.
YouTube Player
Fridge Defend Player
VIDEO:
The RV refrigerator has a device called a ‘thermistor’ that regulates the temperature within the RV fridge.
This video teaches how to troubleshoot and repair the thermistor RV refrigerator temperature controller.
TEXT: Norcold Thermistor & Temperature/Ω Values
TEXT: Dometic Thermistor & Temperature/Ω Values
YouTube Player
Fridge Defend Player
VIDEO:
This video helps teach how the Dometic and Norcold RV refrigerators are driven by a boiler.
The video shows basic instrumentation need to checking the boiler and information about the electric and gas
heaters.
Click for Data Interface Controller for Advanced Diagnostics
YouTube Player
Fridge Defend Player
VIDEO:
This video teaches how to troubleshoot and repair RV refrigerator electric heaters and the controller
fuses for No AC type errors and trouble codes.
TEXT: Norcold Electric Heaters
TEXT: Dometic Electric Heaters
YouTube Player
Fridge Defend Player
VIDEO:
When the fridge does not cool when in the propane (LP Gas) mode, there may be issues with the LP filter
and or the regulator pressure. This video teaches how to troubleshoot and repair these problems.
VIDEO: Safe Operation of Liquid Propane Gas
TEXT: Norcold LP System Pressure and Filter
TEXT: Dometic LP System Pressure and Filter
YouTube Player
Fridge Defend Player
VIDEO:
This video teaches how to troubleshoot and repair the propane (LP Gas) burner and igniter system including
the gas jet and flue cleaning procedures.
TEXT: Norcold Burner & Igniter
&
Norcold 'Popping-Burner' Solution
TEXT: Dometic Burner & Igniter
YouTube Player
Fridge Defend Player
VIDEO: This video shows how to troubleshoot and repair the RV fridge burner gas valve including ohms and voltage checks.
YouTube Player
Fridge Defend Player
VIDEO: This RV fridge has a problem that came from the factory, not enough thermal mastic. This video shows how to troubleshoot and repair the fridge for this particular poor or not cooling issue.
YouTube Player
Fridge Defend Player
VIDEO: This video shows how to remove the cooling unit from a Dometic or Norcold RV refrigerator.
YouTube Player
Fridge Defend Player
VIDEO: This video shows the critical cooling unit replacement step of properly applying the evaporator thermal mastic.
YouTube Player
Fridge Defend Player
VIDEO: This video shows how to properly install a Dometic or Norcold cooling unit, including the critical step of sealing the evaporator.
YouTube Player
Fridge Defend Player
VIDEO: This video clears up some misconceptions about RV refrigerator ventilator and defrost fans. Fans increase efficiency, but do not prevent the cooling unit boiler from overheating.