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ADVISORY TROUBLESHOOTING GUIDE
All advisories are indicated on the keypad by a yellow indicator in the Status area, and one of the
following messages alternating with the normal lower line display. Perform service or maintenance as
indicated, then clear the advisory as instructed in the operating instructions.
Message Action needed
CHECK COMM PORT The controller has detected a communications problem while running in
Sequence mode. Check for proper cable installation. If the controller
switches from Sequence to Auto mode, reprogram a different unit
number.
CHNG AIR FILTER Excessive vacuum has been detected after the air filter, indicating it has
become full. Change the air filter to ensure maximum air delivery.
CHANGE SEPARATOR The differential pressure across the separator has risen to over 8 psid.
Change the separator to ensure peak compressor performance.
CHNG OIL FILTER The unit has been operated for the programmed number of hours since
the last filter replacement. Change the filter to ensure an adequate flow
of lubricant.
CHANGE OIL The unit has been operated for the programmed number of hours since
the last oil change. Change the oil to ensure lubricant quality.
HIGH DISCH TEMP High temperature was sensed at the airend discharge. Ensure that the
compressor receives adequate cooling air or water, and that the coolers
are not plugged.
HIGH MOTOR AMPS The unit has been operated with motor current in excess of the
programmed service factor amps. TurnValve units will unload during
moderate over-current to prevent sustained operation.
HIGH RESRVR TEMP High temperature was sensed at the separator. Ensure that the
compressor receives adequate cooling air or water, and that the coolers
are not plugged.
LOW AMB TEMP The temperature was less than 40 degrees F (4 degrees C) at: (A) the
airend discharge, (B) the separator. Ensure that the compressor is
located in a room kept above freezing.
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