Trane CVHE Information Manual page 84

DIAGNOSTIC DESCRIPTION
Rfgt Monitor Bench Flow Loss
Rfgt Monitor Scanner Flow Loss
Rfgt Monitor Out Of Temp
Range
Rfgt Monitor Refrig Level Too
Low
Rfgt Monitor Fault
Rfgt Monitor Calibration Error
(This diagnostic is currently
ignored by UCP2)
Rfgt Monitor Aux Input Error
Rfgt Monitor External Reset
Rfgt Monitor Level 3 Rfgt
Refrigerant Alarm
Rfgt Monitor Auxiliary Alarm
Rfgt Monitor Level 2 Rfgt
Refrigerant Alarm
Rfgt Monitor Level 1 Rfgt
Refrigerant Alarm
Safety String Input Opened***
Severe Phase Unbalance
Solid State Starter Fault Rly
Open
Soln Pump Winding Thermostat
Open
Information Manual
Diag Module Diag.
Type that Active
Called Modes
Diag.
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
IFW Rfgt Mon All
MMR Scorpio All
MMR Starter All
Running
Modes
MMR Starter All Start
and Run
Mode
MMR Circuit All
CAUSE
Air flow loss to the Refrigerant Monitor optical
bench.
a. IFW to the chiller, MMR/MAR to the
Refrigerant Monitor.
Air flow loss to the Refrigerant Monitor scanner.
a. IFW to the chiller, MMR/MAR to the
Refrigerant Monitor.
Out of temperature range for measuring
refrigerant concentration.
The Refrigerant Monitor read less than or equal
to -5 ppm refrigerant concentration.
A undefined diagnostic detected by the
Refrigerant Monitor.
a. IFW to the chiller, MMR to the Refrigerant
Monitor.
The Refrigerant Monitor calibration failed.
a. IFW to the chiller, IFWMMR to the Refrigerant
Monitor.
The Refrigerant Monitor auxiliary input is outside
the 4-20 mA range.
The Refrigerant Monitor external reset switch
(Normally Closed) is stuck in the "reset" state or
the switch/jumper is missing.
The Refrigerant Monitor has read a refrigerant
concentration greater or equal to the level 3
setpoint.
The Refrigerant Monitor auxiliary input signal
indicates an alarm condition.
The Refrigerant Monitor has read a refrigerant
concentration greater or equal to the level 2
setpoint.
The Refrigerant Monitor has read a refrigerant
concentration greater or equal to the level 1
setpoint.
Safety string input opened on the Scorpio
module
a. A 30% Phase Unbalance diagnostic has been
detected. Items to check are the Current
Transformer Part Numbers (they should all
match), The Current Transformer resistances,
line voltage phase balance, all power wiring
connections, the contactor pole faces, and the
motor. If all these are OK, replace the Starter
module.
The SSS fault relay is open.
a. The motor winding temperature thermostat
opened; nominally 230°F (110 °C).
b. The motor temp. thermostat or wiring is open.
c. Time to trip from input open to Solution Pump
shutdown shall be 0.5 to 2.0 seconds.
Diagnostics Menu
Help Message
See Refrigerant
Monitor IOM
Manual
See Refrigerant
Monitor IOM
Manual
Check Bench
Heater, Wiring,
Connections
Recalibrate
Refrigerant
Monitor
See Refrigerant
Monitor IOM
Manual.
See Refrigerant
Monitor IOM
Manual
Check Signal At
Input
See Refrigerant
Monitor IOM
Manual.
N/A
N/A
N/A
N/A
N/A
Check Main
Power Supply &
Wiring
See Solid State
Starter Service
Bulletin, check
for an open wire.
Check Machine
Operation
79