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Table 27 — Alarm and Alert Codes (cont)
ALARM/
ALEERT
CODE
ALARM
OR
ALERT
DESCRIPTION
WHY WAS THIS
ALARm
GENERATED?
ACTION TAKEN
BY CONTROL
RESET
METHOD
PROBABLE
CAUSE
150
Alarm
Emergency Stop
CCN emergency stop
command received
Chiller shutdown with-
out going through
pumpdown.
Automatic once CCN
command for EMSTOP
returns to
normal
CCN Network
command.
151
Alarm
Illegal Configuration
One or more of the
illegal configurations
shown in the Note be-
low exists.
Chiller is not allowed to
start.
Manual once configu-
ration errors are
corrected
Configuration error.
See Note on
page 49.
152
Alarm
Unit Down Due to
Failure
Both circuits are down
due to alarms/alerts.
Chiller is unable to run. Automatic once
alarms/alerts are
cleared that prevent
the chiller from
starting.
Alarm notifies user
that chiller is
100% down.
153
Alarm
Real Time Clock Hard-
ware Failure
Internal clock on MBB
fails
Occupancy schedule
will not be used. Chiller
defaults to Local On
mode.
Automatic when cor-
rect clock control
restarts.
Main Base Board
failure.
154
Alarm
Serial EEPROM Hard-
ware Failure
Hardware failure with
MBB
Chiller is unable to run.
Manual
Main Base Board
failure.
155
Alert
Serial EEPROM Stor-
age Failure
Configuration/storage
failure with MBB
No Action
Manual
Potential failure of
MBB. Download cur-
rent operating soft-
ware. Replace MBB
if error occurs
again.
156
Alarm
Critical Serial
EEPROM Storage
Failure
Configuration/storage
failure with MBB
Chiller is not allowed to
run.
Manual
Main Base Board
failure.
157
Alarm
A/D Hardware Failure
Hardware failure with
peripheral device
Chiller is not allowed to
run.
Manual
Main Base Board
failure.
170
Alert
Loss of Communica-
tion with CXB
MBB loses communi-
cation with CXB
Compressors A3, A4
and B3 and unloaders
A2/B2 unable to
operate.
Automatic
Wiring error, faulty
wiring or failed CXB
module.
172
Alarm
Loss of Communica-
tion with EXV
MBB loses communi-
cation with EXV
Chiller shutdown with-
out going through
pumpdown.
Automatic
Wiring error, faulty
wiring or failed EXV
module.
173
Alert
Loss of Communica-
tion with EMM
MBB loses communi-
cation with EMM
4 to 20 mA tempera-
ture reset disabled.
Demand Limit set to
100%. 4 to 20 mA set
point disabled.
Automatic
Wiring error, faulty
wiring or failed
Energy Manage-
ment Module (EMM).
174
Alert
4 to 20 mA Cooling Set
Point Input Failure
If configured with EMM
and input less than
2 mA or greater than
22 mA
Set point function dis-
abled. Chiller controls
to CSP1.
Automatic
Faulty signal generator,
wiring error, or faulty
EMM.
176
Alert
4 to 20 mA Tempera-
ture Reset Input Fail-
ure
If configured with EMM
and input less than
2 mA or greater than
22 mA
Reset function dis-
abled. Chiller returns
to normal set point
control.
Automatic
Faulty signal generator,
wiring error, or faulty
EMM.
177
Alert
4 to 20 mA Demand
Limit Input Failure
If configured with EMM
and input less than
2 mA or greater than
22 mA
Demand limit function
disabled. Chiller re-
turns to 100% demand
limit control.
Automatic
Faulty signal generator,
wiring error, or faulty
EMM.
200
Alarm
Cooler Pump Interlock
Failure to Close at
Start-Up
If configured for cooler
pump control and
cooler pump interlock
not closed within
1 minute after pump is
started
Cooler pump shut off.
Chiller shutdown with-
out going through
pumpdown.
Manual
Failure of cooler pump
or controls.
201
Alarm
Cooler Pump Interlock
Opened During Normal
Operation
If configured for cooler
pump control and inter-
lock opens while cooler
pump relay is on
Cooler pump shut off.
Chiller shutdown with-
out going through
pumpdown.
Manual
Failure of cooler pump
or controls.
202
Alarm
Cooler Pump Interlock
Closed When Pump is
Off
If configured for cooler
pump control and inter-
lock closes while
cooler pump relay
is off
Chiller is not allowed to
start.
Manual
Failure of cooler pump
relay or interlock,
welded contacts.
50
Содержание 30GTN
Страница 6: ...Fig 1 Typical Control Box 080 110 and Associated Modular Units Shown 6 ...
Страница 7: ...Fig 2 24 V Control Schematic Unit Sizes 040 070 7 ...
Страница 8: ...Fig 3 24 V Control Schematic Unit Sizes 080 110 230B 315B 8 ...
Страница 9: ...Fig 4 24 V Control Schematic Unit Sizes 130 210 230A 315A 330A B 420A B 9 ...
Страница 75: ......