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Section VIII - Power$ync II
™
Operation
40 Quincy Compressor
®
- QSD™
MAJOR DIAGNOSTIC FAILURE
CORRECT PROBLEM NOW
PRESS ➔ ENTER TO RERUN DIAGNOSTICS
If the computer is unable to complete its diagnostic
check, it will display this message. Disconnect
the main power supply to the compressor and
check all electrical connection to all boards and
sensors. Reapply power and press ENTER to rerun
the diagnostic check. If the machine again displays
this message, contact your service representative.
The compressor can be operated in Back-up Mode.
NOTICE
U19 MEMORY FAILURE
CONTACT YOUR SERVICE REPRESENTATIVE
This display indicates that the setup memory
cannot be accessed by the operating program.
Probable causes are badly corrupted data or a
mechanical failure of the memory chip. Contact
your service representative for proper diagnosis
and repair. The compressor can be operated in
Back-up Mode.
One of the following three messages may be displayed if
wiring to the starter is changed or if a remote starter is
installed. These messages could indicate an error in the
wiring which would cause the drive motor to start as soon
as power is applied to the compressor or a failed
component in the starting system. Power$ync II
™
will
alert the operator if it attempts to shut down the
compressor and the compressor does not respond (see
Warning and Shutdown Displays). If power is
disconnected, and then reapplied without having
corrected the fault, one of the following displays will be
visible:
NOTICE
A CONTROL RELAY IS NOT DISENGAGED
REFER TO YOUR SERVICE MANUAL OR
CONTACT YOUR SERVICE REPRESENTATIVE
This display indicates that the control relay that
signals the starter to engage is not functioning
properly. The cause may be a jammed or shorted
START button or relay. Immediately disconnect
the power to the compressor and determine the
cause of the malfunction. If the cause cannot be
determined and corrected, contact your local
service representative. Do not attempt to operate
the compressor in Back-up Mode.
NOTICE
MAIN CONTACTOR IS NOT DISENGAGED
REFER TO YOUR SERVICE MANUAL OR
CONTACT YOUR SERVICE REPRESENTATIVE
NOTICE
WYE CONTACTOR IS NOT DISENGAGED
REFER TO YOUR SERVICE MANUAL OR
CONTACT YOUR SERVICE REPRESENTATIVE
These messages indicate a starter that is not
functioning properly or has been incorrectly wired
into the system. If the compressor has a starter
that was not provided by Quincy Compressor, this
message may indicate that the starter has been
incorrectly wired to the auxiliary contacts. Low
supply voltage can cause starters to “chatter”.
The arcing associated with starter “chatter” can
weld the contacts together (preventing the starter
from disengaging) or cause catastrophic
destruction of the starter. Immediately disconnect
the power to the compressor and determine the
cause of the malfunction. If the cause cannot be
quickly and easily corrected, contact your service
representative. Do not attempt to operate the
compressor in Back-up Mode.