Dometic RM1350 Elite User Manual

Dometic RM1350 Troubleshooting Guide for Poor Cooling
For use when the temperature indicator is consistently greater than 39 degrees
Assumed to be running on 110V shore power, Temp Setting on ‘5’
Were doors
open for more
than 30
seconds?
Allow several hours to
reach normal temp
YES
Is frig full &
tightly packed
With food?
Leave room for air
circulation and add small
fan to shelf
YES
Are
large items
blocking air
circulation
NO
YES
Freezer
cooling
properly?
YES
Freezer
cools ok in
LP mode?
Run for 1-2 days
On LP instead of
Electric
Electric Boiler
needs service
3
.
YES
Is Frig out of
level more
Than slightly?
Level trailer, espec
Front-to-rear.
YES
External temp
> 95 degrees?
Improve airflow
On back of frig
1
Endcap
missing from
Drain hose?
Replace endcap
Left
door flap
not closing
tightly?
Install improved
flap mounting
brackets
2
YES
Dollar bill
Pulls thru seals
easily
Adjust doors or fix/
replace seals
YES
YES
NO
NO
Thermistor
Near fins?
If adjustable, move
away from fins
YES
NO
YES
NO
NO
Ammonia
smell?
Probably need
new cooling unit
Get service to test
Cooling unit per
Dometic specs
YES
1. Add ventilator fan kit 3108705.744 (or equivalent) and check that baffle is directing air across the condenser fins before exiting top vent.
2. Flap mounting brackets: new part #s 3851102024 and 3851103022
START
HERE
Freezer should cool to
around 0 degrees F. Ice
cream should be hard.
3. User manual has instructions on replacing electric heating unit. With heater leads removed, element should show 40-70 ohms
NO
Fan
On backside
Of frig
stopped?
NO
Repair/replace fanYES
NO
NO
NO
Problem
Happens only
every few
days?
NO
NO
Restart auto-defrost cycle.
At 4PM, cut all AC and DC
power, then restart frig.
YES
Dometic RM1350 Troubleshooting Flowchart Dan Mayer

Dometic RM1350 Elite Specifications

General

Brand	Dometic
Model	RM1350 Elite
Category	Refrigerator
Language	English

Summary

Initial Cooling and Ammonia Checks

Freezer Cooling Performance

Check if the freezer cools properly to around 0 degrees F, with ice cream hard.

Ammonia Smell Detection

Determine if there is an ammonia smell, indicating a potential cooling unit issue.

Environmental and Loading Conditions

Door Open Duration

Assess if refrigerator doors were open for more than 30 seconds.

Food Loading and Airflow

Check if the refrigerator is tightly packed and if items block air circulation.

External Temperature Impact

Verify if the external temperature exceeds 95 degrees Fahrenheit.

Component and Seal Integrity

Backside Fan Status

Inspect if the fan on the backside of the refrigerator has stopped.

Drain Hose Endcap

Check if the endcap is missing from the drain hose.

Door Flap Closure

Determine if the left door flap is not closing tightly.

Door Seal Effectiveness

Test door seal effectiveness using a dollar bill.

Thermistor Placement

Check if the thermistor is located near the fins and adjust if necessary.

Operational Modes and Servicing

LP Mode Operation Test

Run the refrigerator on LP mode for 1-2 days to check cooling.

Electric Boiler Service

Identify if the electric boiler needs service when freezer cools in LP mode.

Periodic Problem Occurrence

Troubleshoot intermittent problems by restarting the auto-defrost cycle.

Professional Cooling Unit Test

Seek service to test the cooling unit according to Dometic specifications.