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TJ18, TJ22, TJ42, TJF42 & TJ80 Installation And Operating Instructions
TROUBLE SHOOTING GUIDELINES
A. Refrigerator Does Not Operate
1. The thermostat is set to OFF.
2. On 12/24 VDC only models the circuit breaker be-
tween the distribution center and the AC power sup-
ply has tripped.
3. On models with a Refrigerator Power Supply, the
circuit breaker between the Refrigerator Power
Supply and the AC supply may have tripped or
fuses inside the Refrigerator Power Supply may
have blown.
Shock Hazard. The Dometic Refrigerator
Power Supply is considered non-serviceable.
Do not open case for any reason. Failure to
follow these instructions could cause death
or severe personal injury.
4. Power supply cable is faulty or poorly connected.
5. The battery is delivering insufficient power. If the
battery voltage is less than 10.4 VDC (on a 12 VDC
system) or 22.8 VDC (on a 24 VDC system), the
unit will not operate.
6. The voltage on the electronic control unit terminal
board does not correspond with the battery. Or the
voltage drop is over 0.2-0.4 VDC check:
a. The size of the cable connecting the battery to
the electronic control unit corresponds to speci-
fications. See ABYC Guidelines.
b. All connection points in the power supply are
properly tightened.
c. There are no signs of oxidation on the battery
poles and contact points.
7. If a Refrigerator Power Supply or other AC/DC con-
verter is used, check:
a. The AC power source is on.
b. The circuit board terminals are properly con-
nected.
c. Output voltage to the refrigerator is sufficient.
8. Electronic unit heat sink overheating:
a. Insufficient venting.
b. Dirt build up on heat sink. Clean if necessary.
B. Excessive Refrigerator Noise
1. The refrigerator is not positioned on a flat surface.
2. The refrigerator is touching other objects that may
cause vibration.
3. The refrigerant lines at the back of the refrigerator
are touching or vibrating against the refrigerator.
4. Fan blade hitting other objects.
WARNING
!
C. Insufficient Cooling
1. The door/lid is not sealed properly.
2. The refrigerator is positioned close to a heat
source.
3. The refrigerator is insufficiently ventilated.
4. Excessive frost buildup on the evaporator.
5. Dust blocking the condenser.
6. The refrigerator is over-filled.
7. Fan not working.
If after checking the above, the refrigerator still does not
function properly, contact your service dealer or Dometic
Corporation Environmental Systems at (804) 746-1313 or
(954) 973-2477. Ask for the Refrigerator Service Depart-
ment.