McQuay RVSS14 Installation, Operation And Maintenance Manual page 47

Starters for centrifugal chillers low voltage, solid state and wye-delta medium/high voltage, solid state and across-the-line
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Fault
Description
Code
F96
CPU Error
CPU Error –
F97
SW Watchdog
Fault
F98
CPU Error
CPU Error –
Program
F99
EPROM
Checksum Fault
IOMM Starter
Detailed Description of Fault / Possible Solutions
If fault persists after performing a Factory Parameter reset, consult factory.
The D3 control has detected an internal CPU problem. Consult factory.
The D3 control has detected an internal software problem. Consult factory.
The D3 control has detected an internal CPU problem. Consult factory.
The non-volatile program memory has been corrupted.
Consult factory. Control software will need to be reloaded in to the D3 control card
before normal operation can resume.
47

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