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ComPac 9/04-12
A comprehensive understanding of the operation of the ComPac
®
A/C is a prerequisite to
troubleshooting. Please read the Chapter 1 for basic information about the unit.
Marvair's ComPac
®
air conditioners are thoroughly tested before they are shipped from the
factory. Of course, it is possible that a defect may escape undetected, or damage may have
occurred during transportation. However, the great majority of problems result from
installation errors.
If you experience difficulties with the ComPac
®
A/C, please review the installation steps in
Chapter 2.
Much time can be saved by taking a thoughtful and orderly approach to troubleshoot-
ing. Start with a visual check - are there loose wires, crimped tubing, missing parts, etc?
Begin deeper analysis only after making this initial inspection.
The troubleshooting information in this manual is basic. The troubleshooting section
contains problem/solution charts for general problems, followed by a compressor
section.
Not every problem can be anticipated. If you discover a problem that is not covered in
this manual, we would be very grateful if you would bring it to the attention of our
service department for incorporation in future revisions.
As always, please exercise caution and good judgement when servicing the ComPac
®
A/C.
Use only safe and proven service techniques. Use refrigeration goggles when servicing the
refrigeration circuit.
The refrigerant circuit has hot surfaces, and the electrical voltages inside of the unit may
be hazardous or lethal. SERVICE MAY BE PERFORMED ONLY BY QUALIFIED
AND EXPERIENCED PERSONS.
IMPORTANT
T
ROUBLESHOOTING
4.1 O
VERVIEW
