Dometic 750000011(TJ22F) C.Checking the Fan, Freightliner Refrigerator Troubleshooting Guide

Freightliner Refrigerator Troubleshooting Guide

750000005 (TJ18F)

750000011 (TJ22F)

750000026 (TJ18FP3)

Compressor terminals (Current lead-in pins)

4.Check each pin (motor winding) for continuity to ground. A multimeter can be used in some cases but an insulation tester by “Meggar” should be used. If there is any continuity to ground then the compressor is internally shorted and will need to be replaced. This is not a field operation.

5.If a problem is not found in the compressor then the Danfoss module needs to be replaced.

C.Checking the Fan

1.The Condenser Cooling Fan should come on after a five second delay once the compressor starts.

2.Visually inspect fan for any blockages and make sure that it can turn freely.

3.If the fan can spin freely and is not working then first check the fan terminals “+”

(the lower of the two “+” symbols) and “F” on the module for voltage. The reading should be approximately 12 volts.

Condenser fan terminals

(Current lead-in pins)

4.If there is voltage at the module terminals then remove the fan wires from the module and check for continuity through the fan itself by placing meter leads in each fan wire push-on terminal. If there is no continuity through the fan then replace it.

DOMETIC CORPORATION, ENVIRONMENTAL DIVISION
P.O. Box 15299 I Richmond, VA 23227 USA
Phone +804 746 1313 Fax +804 746 7248
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