Diagnostics Menu
78 CVHE-CLD-1A
Purge Memory Error Type III
This diag. should be seen in
retrofit applications only.
IFW Purge All a. A Shadow Ram memory error was detected.
The Purge Module is operating on all last valid
values (pulled from NOVRAM) for all setup
parameters. Setup parameter changes less than
24 hours old pending to be loaded into NOVRAM
were lost. Check all setup parameters made in
the last 24 hours. Purge pumpout times
Compressor starts and hours were lost for not
more than the last 24 hours. This is expected to
be an isolated event and repair or replacement is
not required. If this diagnostic does occur
repeatedly, then replace the Purge module.
Settings
Changed in The
Last 24 Hours
Lost
Purge Memory Error Type IV IFW Purge All A page timeout error was detected while trying to
write data into EEP Factory. There will likely be a
recall of Engineering Factory defaults or a
corruption of pumpout data on the next power
transition. Replace the Purge Module as soon as
a replacement is available.
See Purge O &
M Manual
Purge Memory Error III
This diag will be seen in UCP2
applications of the Purge
Module. This diag will not be
seen in retrofit applications of
the Purge Module. See also
diag 385-387.
IFW Purge All a. A Shadow Ram memory error was detected.
Compressor starts and hours were lost for not
more than the last 24 hours. This is expected to
be an isolated event and repair or replacement is
not required. If this diagnostic does occur
repeatedly, then replace the Purge module. This
is an IFW diagnostic to both the Purge and
Chiller.
No Settings Lost
Purge Misconfigured as Retrofit IFW Purge All The Purge module is configured as a Retrofit
application instead of an UCP2 application.
Chiller module remaps Purge Retrofit Only
diagnostics to this diagnostic. Check Purge input
J1 pins 5,6. Open = UCP2 application, Short =
Retrofit application
See Purge O &
M Manual
Purge Misconfigured as UCP2 IFW Purge All The Purge module is configured as an UCP2
application instead of a Retrofit application.
Check Purge input J1 pins 5,6. Open = UCP2
application, Short = Retrofit application
See Purge O &
M Manual
Refrigerant Monitor Sensor IFW-AR Circuit All Open or Shorted input and the Rfgt Monitor is
setup as installed at the Clear Language
Display.
Check Sensor,
Wiring, and
Connections
Rfgt Monitor Memory Lost IFW Rfgt Mon All Refrigerant Monitor lost battery backed-up RAM.
a. IFW to the chiller, MMR/MAR to the
Refrigerant Monitor.
See Refrigerant
Monitor IOM
Manual
Rfgt Monitor IR Source IFW Rfgt Mon All Refrigerant Monitor infrared optical source
failure.
a. IFW to the chiller, MAR to the Refrigerant
Monitor.
Check IR
Source Wiring
And
Connections
Rfgt Monitor Chopper IFW Rfgt Mon All Refrigerant Monitor optical bench photo-
interrupter failure.
a. IFW to the chiller, MAR to the Refrigerant
Monitor.
Check Chopper
Wiring And
Connections
Rfgt Monitor Temp Sensor IFW Rfgt Mon All Refrigerant Monitor bench temperature sensor
failure.
a. IFW to the chiller, MAR to the Refrigerant
Monitor.
Check Sensor,
Wiring,
Connections
DIAGNOSTIC DESCRIPTION
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Type
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that
Called
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