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Dometic RV Fridge Troubleshooting: RM1350 Error Codes and Failures

Dometic RM1350 not cooling or showing a code? Check the display, normal controls, level, door seal, frost, and food airflow before service.

Source 2 reviewed source records

Stop for gas, smoke, alarms, or abnormal heat

Leave and get help if you smell propane or ammonia, hear an alarm, or see smoke, soot, or abnormal heat.

Quick answer

Start with the display, then the simple cooling checks.

Most RM1350 refrigerator problems show up as no normal display response, an error indication, or a refrigerator that runs but does not cool. Start by noting the display, selected mode, and fridge temperature. If there is no code, check the normal controls, parked level, door seal, frost, and food airflow.

Error codes and symptoms

Symptoms and error codes

RM1350 problems usually fall into three buckets: no normal display response, an error code or flashing LP indication, and a refrigerator that runs but does not cool. Each points to a different next check. These code meanings apply only to the RM1350 variants listed below.

E0 - communication fault

Time to call a tech

The display is not communicating with the refrigerator's power module. Write down the code and arrange service.

Source: Form 3313352.019, Revision C, 12/17

E1 - LP-operation hardware fault

Time to call a tech

This points to the LP-operation system, not a generic thermistor fault. Note whether the refrigerator still operates in its other documented mode, then arrange service. Do not open or service the LP system.

Source: Form 3313352.019, Revision C, 12/17

E2 - temperature-sensor or circuitry fault

Time to call a tech

This code points to the temperature-sensor device or its associated circuitry. The useful next step is to record the code, model, and current fridge temperature; sensor wiring and replacement belong with service.

Source: Form 3313352.019, Revision C, 12/17

E3 - cooling-unit malfunction

Time to call a tech

The cooling unit has malfunctioned. This is not the RM1350 gas-ignition code. Record the code and arrange service; do not keep resetting it or inspect the rear compartment.

Source: Form 3313352.019, Revision C, 12/17

E4 - DC voltage out of range

Time to call a tech

The refrigerator is seeing DC voltage outside its documented operating range. Note recent battery, shore-power, or converter changes for the technician; this code is not a reason to probe the refrigerator's wiring.

Source: Form 3313352.019, Revision C, 12/17

Flashing LP - ignition did not complete

Check your manual first

The refrigerator did not complete an LP ignition sequence. This is different from E3. If there is no odor, alarm, smoke, or soot, the manual allows a front-panel OFF/ON restart. If it returns, arrange service.

Source: Form 3313352.019, Revision C, 12/17

Diagnostic flow: what to check next

Start with the simple action that fits your exact equipment. You do not need to take it apart to learn something useful.

  1. Is there an error code or flashing LP indication?

    Record the full E-code or flashing LP indication, the selected mode, and the fresh-food temperature. The code table above applies only after the inside-compartment label confirms one of the RM1350 variants listed here.

    Source

    Source: Printed pages 8, 19, and 20: model label, control-panel indications, and error-code display

  2. If there is no code, check the front controls

    Make sure the refrigerator is on, note whether AUTO or LP is showing, and check the thermostat setting. On this model, 1 is warmest and 5 is coldest.

    Source

    Source: Printed pages 8 and 11, control panel and thermostat adjustment

  3. Is the refrigerator running but not cold?

    Check that the RV is reasonably level, the doors close and seal, heavy frost is not blocking the fins, and food has room for air to move. These are the useful no-tools checks before service.

    Source

    Source: Printed pages 10 and 19, leveling and not-cold-enough troubleshooting

  4. Did cooling recover after the visible checks?

    If cooling remains inadequate, record the selected mode and fridge temperature for service. Do not remove an exterior vent cover, open the rear compartment, or test refrigerator wiring.

    Source

    Source: Printed pages 10 and 19, owner-visible cooling checks and service routing

A couple of things worth keeping in mind

These can help you use the guide well. They do not expand what is safe to work on.

Treat seal care as maintenance, not a diagnosis

If the exact manual names a gasket-care product, it may be worth considering as routine care. It cannot confirm a bad seal or replace a damaged gasket.

Use a thermometer to protect food, not to diagnose the refrigerator

A temperature and time record can make the food decision and a service conversation more concrete. It does not identify the failed appliance part.

Check your manual first

Only continue when your exact installed equipment and its documentation make this owner-accessible action clear.

  1. For flashing LP, use the documented front-panel restart

    After a tank change or long shutdown, and only if there is no propane odor, alarm, smoke, or soot, turn the refrigerator off at its front ON/OFF control and back on. If the indication comes back, arrange service.

    Source and when to stop

    Source: Printed pages 10 and 19, purging air from lines and flashing-LP troubleshooting

    Stop if: A propane or ammonia odor, alarm, smoke, or soot occurs; The indication persists after the manual-authorized restart attempts; The refrigerator behaves differently from the cited manual.

Time to call a tech

Stopping here protects the RV and gives the technician a clearer starting point.

Any E0, E1, E2, E3, or E4 error code is displayed.

Record the code and the model, product, and serial number, then contact a Dometic dealer or service center. Do not perform internal electrical, LP-system, sensor, or cooling-unit work.

The refrigerator stops cooling or there is an ammonia odor, smoke, soot, or residue from a normal visible area.

Stop using the refrigerator and contact qualified service from a safe location. Leave exterior-compartment inspection to the technician and do not use the refrigerator until it has been cleared.

There is a propane or fume odor, a persistent flashing LP indication, or cooling does not recover after the visible checks.

Contact a Dometic dealer or service center. Do not inspect or service the combustion system.

Before you call

Make a clear service brief

Choose the facts you can see safely, then copy a short starting point for your technician.

Exact model

Could you confirm the model from a record or an already-visible label?

What changed

Did you record the display, normal-control response, or visible symptom?

Service boundary

Did a safety or service stop appear?

What this brief will include
  • Exact model, product number, and serial number from the fresh-food-compartment data label
  • Displayed code or LP indication exactly as shown
  • Whether the refrigerator was in AUTO or LP mode
  • Whether it still operated on 120-volt AC when E1 appeared
  • Whether cooling stopped completely or was only insufficient
  • Whether any propane or ammonia odor, alarm, smoke, soot, or fume odor occurred
  • Recent LP-tank change, long shutdown, power interruption, or travel
  • Visible checks completed: controls, level, door seal, frost, and food airflow
  • The result of any documented front-control restart

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Quick reference

Common questions

Does E3 mean gas ignition failure on a Dometic RM1350?

No. In Dometic Operating Instructions Form 3313352.019, Revision C, E3 means the cooling unit has malfunctioned. A flashing LP indication, not E3, is the ignition-related indication on the supported RM1350 models.

Can I use this code table for another Dometic RM refrigerator?

No. Use this page only for the listed RM1350 variants covered by Form 3313352.019, Revision C. Confirm the exact model and applicable manual before interpreting a code.

What should I do when an RM1350 error code appears?

Record the exact code and the model, product, and serial number. Contact a dealer or service center rather than opening or testing the affected electrical, LP-gas, sensor, or cooling system.

Continue with a reviewed guide

Primary documentation

Sources and revision record

Dometic Corporation

RM1350 & RM1350SL Operating Instructions - USA & Canada

Form 3313352.019, Revision C, 12/17

Reviewed: August 7, 2026

Relevant sections: Printed pages 8-11 and 18-20: control panel, leveling, modes, starting/temperature settings, troubleshooting table, and error codes

Open manufacturer document
U.S. Department of Agriculture Food Safety and Inspection Service

Keep Your Food Safe During Emergencies: Power Outages, Floods & Fires

USDA FSIS food-safety guidance, reviewed 2026-08-14

Reviewed: August 14, 2026

Relevant sections: Closed-door cold holding, appliance thermometers, 40°F threshold, cooler and ice-pack guidance

Open manufacturer document

Revision note: Minimal-edit Dometic revision: preserves the live guide's Quick Answer, symptom-to-code flow, and visible cooling checks while correcting the RM1350 code table and removing unsafe repair steps and repair-part links.

Scope: U.S.-first. This guide applies only within the cited manufacturer and agency source scope.

Sources last reviewed: August 7, 2026