RLC-SVU01B-E4
58
Diagnostics
D8
771
772
Reset
Level
Hex
Code
Persistence
Severity
Diagnostic Name and
Source
Criteria
NonLatch
a. Line voltage below - 10% of
nominal or the
Under/Overvoltage transformer
is not connected. [Must hold = -
10% of nominal. Must trip = -
15 % of nominal. Reset
differential = min. of 2% and
max. of 4%. Time to trip = min.
of 1 min. and max. of 5 min.)
Design: Nom. trip: 60 seconds
at less than 87.5%, + or - 2.8%
at 200V or + or - 1.8% at 575V,
Auto Reset at 90% or greater.
Normal
Remote
Under Voltage
Latch
The evaporator pressure
dropped below 0.7 bar (or 0.35
bar in software prior to Oct '02)
regardless of whether or not
compressors are running on
that circuit. This diagnostic was
created to prevent compressor
failures due to crossbinding by
forcing an entire chiller
shutdown. If a given
compressor or circuit is locked
out, the suction pressure
transducer(s) associated with it,
will be excluded from causing
this diagnostic.
Immediate
Local
Transition Complete
Input Shorted -
Compressor 1B
Latch
Same as Very Low Evaporator
Refrigerant Pressure - Circuit 1
Immediate
Local
Very Low Evaporator
Refrigerant Pressure -
Circuit 2