CG-SVX17D-EN 169
Diagnostics
Help Text: Provides for a brief description of what kind of problems might cause this diagnostic
to occur. Both control system component related problems as well as chiller application related
problems are addressed (as can possibly be anticipated). These help messages will be updated
with accumulated field experience with the chillers.
Main Processor Diagnostics
Diagnostic Name Affects Severity
Persisten
ce
Active Modes
[Inactive
Modes] Criteria
Reset
Level
MP: Reset Has Occurred
MP: Reset Has Occurred
MP: Reset Has Occurred
Chiller Warning NonLatch All
The main processor has successfully
come out of a reset and built its
application. A reset may have been due
to a power up, installing new software
or configuration. This diagnostic is
immediately and automatically cleared
and thus can only be seen in the
historic diagnostic list.
NA
MP: Non-Volatile Block Test Error
MP: Non-Volatile Block Test Error
MP: NV Block Test Error
Platform Warning Latch All
MP has determined there was an error
with a block in the Non-Volatile
memory. Check settings.
MP: Non-Volatile Memory Reformatted
MP: Non-Volatile Memory Reformatted
MP: NV Memory Reformatted
Platform Warning Latch All
MP has determined there was an error
in a sector of the Non-Volatile memory
and it was reformatted. Check
settings.
Remote
MP: Could not Store Starts and Hours
MP: Could not Store Starts and Hours
MP: Starts and Hours Failure
Platform Warning Latch All
MP has determined there was an error
with the previous power down store.
Starts and Hours may have been lost
for the last 24 hours.
Remote
Check Clock
Check Clock
Check Clock
Platform Warning Latch All
The real time clock had detected loss of
its oscillator at some time in the past.
Check / replace battery? This
diagnostic can be effectively cleared
only by writing a new value to the
chiller’s time clock using the TechView
or DynaView’s “set chiller time”
functions.
Remote
Phase Protection Fault
Phase Protection Fault
Phase Protection Fault
Chiller Immediate NonLatch All
Phase protection module recognized a
phase loss or phase reversal of the line
power.
Local
Low Pressure Cutout
Low Pressure Cutout
Low Pressure Cutout
Circuit Immediate Latch All
The suction refrigerant pressure fell
below the low pressure cutout trip
point. See the Very Low Suction
Pressure below for more details.
Local
Very Low Suction Pressure – Circuit 1
Very Low Suction Pressure – Circuit 1
Very Low Suct Press – Ckt 1
Chiller Immediate Latch
All
[circuit in manual
lockout]
The circuit’s suction pressure dropped
below (Low Pressure Cutout Setpoint
(kPa absolute) * 0.5) regardless of
whether or not compressors are
running on that circuit. This diagnostic
was created to prevent compressor
failures due to cross-binding by forcing
an entire chiller shutdown. If a given
circuit is locked out, the suction
pressure transducer associated with it
will be excluded from causing this
diagnostic.
Local
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