Dometic 750000005 (TJ18F) - Manual (Page 3)

Freightliner Refrigerator Troubleshooting Guide
750000005 (TJ18F)
750000011 (TJ22F)
750000026 (TJ18FP3)
DOMETIC CORPORATION, ENVIRONMENTAL DIVISION
P.O. Box 15299 I Richmond, VA 23227 USA
Phone +804 746 1313 | Fax +804 746 7248
www.dometic.com Page 3 of 20
General Trouble-Shooting
A: Appliance Does Not Operate. Check:
1. The thermostat knob is “ON”, and turned, at least, half way.
2. The electrical system circuit breaker for the refrigerator is “ON”.
3. The fuse between the Danfoss Module electronic control unit and the power source
is good.
4. The power supply cable is not faulty, loose or poorly connected.
5. The voltage on the Load Dump module corresponds to that of the battery. If there is
a voltage drop of 0.2-0.4v check:
A. The size of the cable connecting the battery to the Load Dump module
corresponds to specifications (see electrical wiring guidelines in this
manual).
B. All connection points in the power circuit are properly tightened and
secure.
C. There are no signs of oxidation on the battery poles or contact points
and the battery is properly maintained.
6. Insure the LOAD DUMP module is installed properly on the Danfoss Module. The
three pins on the LOAD DUMP module must “line up” with the top three pins of the
Danfoss Module.
Positive Lead
from
Multimeter Negative lead
from
multimeter