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 service3.
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 frig1
Endcap
missing from
Drain hose? Replace endcap
Left
door flap
not closing
tightly?
Install improved
flap mounting
brackets2
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
