Troubleshooting - Dometic RM 2553 Installation And Operating Instructions Manual

D. Inspect the flue baffle. It should be reasonably clean
and free of soot. Heavy soot formation indicates im-
proper functioning of the burner. The flue and burner
both require cleaning in the following manner:
1. Unplug the refrigerator power cord from the 230-240
volt AC outlet. (See FIG. 9).
2. Disconnect or shut off the 12 volt DC power to the
refrigerator.
3. Turn manual shutoff valve to OFF. (See FIG. 1 & 10).
4. Remove cover from the burner housing. (See FIG. 1).
5. Disconnect the wire from the high voltage electrode.
6. Remove the burner mounting screw and remove the
burner assembly. (See FIG. 10).
7. Remove the wire and flue baffle from the top of flue
tube. Clean the flue from the top using a flue brush.
Blowing compressed air into the flue will not properly
clean soot and scale out of the flue tube. Replace the
flue baffle.
8. Clean burner tube with a brush. Blow out burner with
compressed air.
9. Before removing burner jet, clean burner area of soot
and scale that fell out of flue tube. Remove the burner
jet. Soak the jet in wood alcohol and blow it out with
compressed air. Reinstall and tighten burner jet.
NOTE: The colour of the flame shall be clear blue over
the slots of the burner. (See FIG. 11).
Clear blue colour
of flame
FIG. 11
! WARNING
DO NOT use a wire or pin when cleaning the burner
jet as damage can occur to the precision opening.
This can cause damage to the refrigerator or create
a fire hazard.
10. Reinstall burner, being careful that the end of the
burner fits into the slot on the burner bracket. Check
to make sure slots are centered under the flue tube
and the thermocouple is positioned properly (tip of
thermocouple extends over two slots of burner).
10
11. Be sure to reconnect the wire to high voltage elec-
trode. Check the electrode for proper location and
gap. (See FIG. 12).
Electrode
FIG. 12
Burner tube
12. Turn on manual gas shutoff valve and check all fit-
tings for leaks with soapy water.
13. Connect 230-240 volt power cord to the outlet and
reconnect or turn on the 12 volt DC power.
14. Check LP gas safety shutoff. See page 5.

4. TROUBLESHOOTING

Refrigerator Does Not Cool Properly
A. Burner jet clogged.
Clean. (See section Maintenance & Service, item 3.
Periodic maintenance, Paragraph D. item 1-14).
B. Check level of refrigerator.
C. Venting problem.
Restriction in air flow across cooling unit.
D. Heavy frost buildup on evaporator fins.
Defrost.
E. Flue baffle not inserted properly in flue tube. (See
page 2, FIG. 1)
F. Improperly set thermostat.
(See Operating Instructions, part Regulating the
temperature).
G. Burner dirty.
Clean. (See section Maintenance & Service, item 3.
Periodic Maintenance, Paragraph D. item 1-14).
H. LP gas pressure low at burner.
Set main regulator so pressure does not drop
below 2,7 kPa at pressure test port. (See FIG. 10).
I. Burner not located properly under flue tube.
Relocate
J. Burner damaged.
Replace
K. Odor from fumes.
1. Dislocated burner
2. Damaged burner
3. Dirty flue tube
NOTE: AVOID SPRAYING WATER THROUGH THE
REFRIGERATOR VENTS WHILE WASHING YOUR RV.
The sealed cooling system must not be opened,
since it contains corroding chemicals under high
pressure.
All the above instructions are to be followed closely. The
refrigerator is quality-guaranteed. However, we are not
responsible for any failures caused by improper adjust-
ments and unfavorable installation conditions. Contact
service point or distributor service dept. for assistance.
1/8" to 3/16"
(3-5 mm)