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Troubleshooting: Compressor Shuts Down

If the problem you’re having isn’t listed, please email us so we can add it. Our expert staff and technicians welcome the opportunity to help you solve problems with your compressed air system, please email us or call us at 1-800-322-9038 for assistance.

Probable CauseDisplay ReadingWhat to Do
Note: If a shutdown occurs, press the DISPLAY SELECT button once to activate the display table.

Using the adjacent up and down arrows, the values displayed will be those immediately preceding shutdown.

Use these values when trouble- shooting a problem.
"HIGH AIREND
TEMP."
Insure that installation area
has adequate ventilation.

Insure that cooling fan is
operating. If not, reset
circuit breaker inside
starter box.

Check coolant level.
Add if required.

Cooler core may be dirty.
Clean coolers

  "HIGH AIR
PRESS."
Check for restricted or
malfunctioning blowdown valve or minimum pressure check valve.
  "LOW SUMP
PRESS."

Check for air leak from
tank or blowdown piping.

Adjust sump pressure

  "PRES SENSOR
FAIL" or "TEMP
SENSOR FAIL"
Check for defective sensor, bad sensor connection or broken sensor wires.
  "CK MOTOR Interchange any two line
connections at the starter.
  "MAIN MTR
OVERLD"
Check for loose wires.
Check supply voltage.
Check heater size.
  "FAN MTR
OVERLOAD"
Check for loose wires.
Check supply voltage.
Fan motor overload tripped.
Check for dirty cooler cores.
  "STARTER FAULT" Inspect starter contactors.
Check for loose wires.
Compressor Shuts Down

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