Hermetic Compressor - Tecumseh

36
SERVICE HANDBOOK
Table 4-1: Troubleshooting Chart
Complaint Possible Causes Response
Compressor starts, but does
not switch off of start winding
(continued)
Compressor starts and runs,
but short cycles on thermal
protector
Discharge pressure too high If this is a water-utilizing
system, see "Servicing or
Troubleshooting Water-
Utilizing Systems: Preventing
Explosions" on pages 32-33
Also refer to the OEM service
information
Internal mechanical trouble in
compressor
Too much current passing
through thermal protector:
1. Extra sources of current
draw
2. Compressor motor has
winding shorted
Low voltage to compressor
(single phase) or unbalanced
voltage (three-phase)
Compressor electrical problems,
such as thermal protector
or run capacitor not working
properly
See "Checking for Adequate
Compressor Pumping" on
page 70
1. Check wiring diagram.
Check for extra sources
of current passing through
thermal protector (such as
fan motors, pumps.) Refer
to the OEM service information
2. See "Identifying Compressor
Electrical Problems"
on pages 40-41
Turn off system until proper
voltage is restored
See "Identifying Compressor
Electrical Problems" on pages
40-41
Discharge pressure too high If this is a water-utilizing system,
see "Servicing or Troubleshooting
Water-Utilizing Systems:
Preventing Explosions"
on pages 32-33. Also, refer to
the OEM service information
Suction pressure too high If this is a water-utilizing system,
see "Servicing or Troubleshooting
Water-Utilizing Systems:
Preventing Explosions"
on pages 32-33. Also, refer to
the OEM service information