83
Table 9 — CVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
I. CHILLER PROTECT LIMIT FAULTS (cont)
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
ALARM MESSAGE
PRIMARY CAUSE
ADDITIONAL CAUSE/REMEDY
227
PROTECTIVE
LIMIT
OIL PRESS
SENSOR FAULT
227->Oil Delta P [VALUE]
exceeded limit of
[LIMIT]*.
Check transducer wiring and accuracy.
Check power supply to pump.
Check pump operation.
Check transducer calibration.
228
PROTECTIVE
LIMIT
LOW OI
PRESSURE
228->Oil Delta P [VALUE]
exceeded limit of
[LIMIT].*
Check transducer wiring and accuracy.
Check power supply to pump.
Check pump operation.
Check oil level.
Check for partially closed service valves.
Check oil filters.
Check for foaming oil at start-up.
Check transducer calibration.
229
PROTECTIVE
LIMIT
LOW CHILLED
WATER FLOW
229->Low Chilled Water
Flow; Check Delta P Con-
fig & Calibration
Perform pump control test.
Check transducer accuracy and wiring.
Check water valves.
Check transducer calibration.
230
PROTECTIVE
LIMIT
LOW CONDENSER
WATER FLOW
230->Low Condenser
Water Flow; Check Delta
P Config & Calibration
Perform pump control test.
Check transducer accuracy and wiring.
Check water valves.
Check transducer calibration.
231
PROTECTIVE
LIMIT
HIGH DISCHARGE
TEMP
231->Comp Discharge
Temp [VALUE] exceeded
limit of [LIMIT].*
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for proper condenser flow and temperature.
Check for proper inlet guide vane and diffuser
actuator operation.
Check for fouled tubes or noncondensables in the
system.
232
PROTECTIVE
LIMIT
LOW REFRIGERANT
TEMP
232->Evaporator Refrig
Temp [VALUE] exceeded
limit of [LIMIT]*.
Check for proper refrigerant charge.
Check float operation.
Check for proper fluid flow and temperature.
Check for proper inlet guide vane operation.
233
PROTECTIVE
LIMIT
HIGH MOTOR
TEMPERATURE
233->Comp Motor Wind-
ing Temp [VALUE]
exceeded limit of
[LIMIT]*.
Check motor sensors wiring and accuracy.
Check motor cooling line for proper operation, or
restrictions.
Check for excessive starts within a short time span.
234
PROTECTIVE
LIMIT
OIL LEVEL
SENSOR
234->Check oil level in
separator.
Check for low oil level.
Check the oil level switch wiring and accuracy.
235
PROTECTIVE
LIMIT
HIGH CONDENSER
PRESSURE
235->Condenser Pres-
sure [VALUE] exceeded
limit of [LIMIT]*.
Check for high condenser water temperatures, low
water flow, fouled tubes.
Check for division plate/gasket bypass.
Check for noncondensables.
Check transducer wiring and accuracy.
236
PROTECTIVE
LIMIT
CCN OVERRIDE
STOP
236->CCN Override Stop
while in LOCAL run mode
CCN has signaled the chiller to stop. Reset and
restart when ready. If the signal was sent by the
CVC, release the stop signal on the STATUS01
table.
237
PROTECTIVE
LIMIT
SPARE SAFETY
DEVICE
237->Spare Safety
Device
Spare safety input has tripped or factory installed
jumper is not present.
238
PROTECTIVE
LIMIT
EXCESSIVE
COMPR STALL
238->Compressor Stall:
Check condenser water
temp and flow
Check condenser flow and temperatures.
Check stall protection configuration.
239
PROTECTIVE
LIMIT
TRANSDUCER
VOLTAGE FAULT
239->Transducer Voltage
Ref [VALUE] exceeded
limit of [LIMIT]*.
240
PROTECTIVE
LIMIT
LOW DISCHARGE
SUPERHEAT
240->Check for Oil in
Refrigerant or Over-
charge of Refrigerant
241
LOSS OF
COMMUNICATION
WITH STARTER
MODULE
241->Loss of Communi-
cation With Starter.
Check wiring to ISM.
242
LOSS OF
COMMUNICATION
WITH CCM
MODULE
242->Loss of Communi-
cation With CCM.
Check wiring to CCM.
243
POTENTIAL
FREEZE-UP
EVAP PRESS/TEMP
TOO LOW
243->Evaporator Refrig
Temp [VALUE] exceeded
limit of [LIMIT]*.
Check for proper refrigerant charge.
Check float operation.
Check for proper fluid flow and temperature.
Check for proper inlet guide vane operation.
244
POTENTIAL
FREEZE-UP
COND PRESS/TEMP
TOO LOW
244->Condenser Refrig
Temp [VALUE] exceeded
limit of [LIMIT]*.
245
PROTECTIVE
LIMIT
VFD SPEED
OUT OF RANGE
245->Actual VFD Speed
[TARGET VFD] exceeded
limit of [SPEED ± 10%]*.
Содержание 23XL
Страница 18: ...18 Fig 15 Control Panel Fig 16 Power Panel ...
Страница 51: ...51 Fig 31 23XL Leak Test Procedure ...
Страница 52: ...52 Fig 32 Typical Optional Pumpout System Piping Schematic with Storage Tank TC Frame 1 and 2 Chillers ...
Страница 53: ...53 Fig 33 Typical Optional Pumpout System Piping Schematic With Storage Tank TD Frame 4 Chillers ...
Страница 54: ...54 Fig 34 Typical Optional Pumpout System Piping Schematic Without Storage Tank TC Frame 1 and 2 Chillers ...
Страница 55: ...55 Fig 35 Typical Optional Pumpout System Piping Schematic Without Storage Tank TD Frame 4 Chillers ...
Страница 99: ...99 Fig 49 Benshaw Inc Solid State Unit Mounted Starter Wiring Schematic Low Voltage ...