66
Table 26 — Alarm and Alert Codes (cont)
LEGEND
Table 27 — Example of Reading and Clearing Alarms
ALARM/
ALERT CODE
ALARM OR
ALERT
DESCRIPTION
WHY WAS THIS ALARM GENERATED?
ACTION TAKEN
BY CONTROL
RESET
METHOD
T153
Alert
Real Time Clock
Hardware Failure
Internal clock on MBB fails
Occupancy schedule will not
be used. Unit defaults to
Local On mode.
Automatic when
correct clock
control restarts.
A154
Alarm
Serial EEPROM
Hardware Failure
Hardware failure with MBB
Unit is unable to run.
Manual
T155
Alert
Serial EEPROM
Storage Failure
Configuration/storage failure with MBB
No action
Manual
A156
Alarm
Critical Serial EEPROM
Storage Failure
Configuration/storage failure with MBB
Unit is not allowed to run.
Manual
A157
Alarm
A/D Hardware Failure
Hardware failure with peripheral device
Unit is not allowed to run.
Manual
A170
Alarm
Loss of Communication
with CXB
MBB loses communication with CXB
CXB functions disabled
Automatic
A173
Alarm
Loss of Communication
with EMM
MBB loses communication with EMM
4 to 20 mA temperature
reset disabled. Demand Limit
set to 100%. 4 to 20 mA
set point disabled.
Automatic
T174
Alert
4 to 20 mA Cooling Set
Point/Desired % Capacity
Input Failure
If configured with EMM and input less than
2 mA or greater than 22 mA
Set point function/%
capacity function disabled.
Automatic
T176
Alert
4 to 20 mA Temperature
Reset Input Failure
If configured with EMM and input less than
2 mA or greater than 22 mA
Reset function disabled.
Unit returns to normal
set point control.
Automatic
T177
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. Unit returns to
100% demand limit control.
Automatic
A200
Alarm
Fan Status
Switch 1 Open
Alarm is generated when fan status switch 1
is open when the unit is in an ON state
Unit not allowed to start
Automatic
T201
Alert
Fan Status Switch 1
is open with Dual TSTAT
configuration
Alert is generated when fan status switch 1
is open when Y1 or Y2 are closed
Circuit A is not allowed to run
Automatic
T202
Alert
Fan Status Switch 2
is open with Dual TSTAT
configuration
Alert is generated when fan status switch 1
is open when Y3 or Y4 are closed
Circuit B is not allowed to run
Automatic
T303
Alert
Condenser Coil
Maintenance Due
Coil Service Countdown (C.L.DN) expired.
Complete condenser coil cleaning and enter ‘YES’
for Coil Maintenance Done (C.L.MN) item.
None Automatic
T500
Alert
Current Sensor Board
A1 Failure
Alert occurs when CSB output
is a constant high value
Compressor A1 shut down
Automatic
T501
Alert
Current Sensor Board
A2 Failure
Alert occurs when CSB output
is a constant high value
Compressor A2 shut down
Automatic
T502
Alert
Current Sensor Board
A3 Failure
Alert occurs when CSB output
is a constant high value
Compressor A3 shut down
Automatic
T503
Alert
Current Sensor Board
B1 Failure
Alert occurs when CSB output
is a constant high value
Compressor B1 shut down
Automatic
T504
Alert
Current Sensor Board
B2 Failure
Alert occurs when CSB output
is a constant high value
Compressor B2 shut down
Automatic
T505
Alert
Current Sensor Board
B3 Failure
Alert occurs when CSB output
is a constant high value
Compressor B3 shut down
Automatic
CCN
—
Carrier Comfort Network
®
LWT
—
Leaving Fluid Temperature
CSB
—
Current Sensor Board
MBB
—
Main Base Board
CXB
—
Compressor Expansion Module
SCT
—
Saturated Condensing Temperature
DTT
—
Discharge Temperature Thermistor
SST
—
Saturated Suction Temperature
EEPROM —
Electrically Erasable Programmable
Read-Only Memory
TSTAT —
Thermostat
EMM
—
Energy Management Module
SUB-MODE
KEYPAD
ENTRY
ITEM
ITEM EXPANSION
COMMENT
CRNT
AXXX or TXXX
CURRENTLY ACTIVE ALARMS
ACTIVE ALARMS (AXXX) OR
ALERTS (TXXX) DISPLAYED.
CRNT
RCRN
NO
Use to clear active alarms/alerts
NO
NO Flashes
YES
Select YES
NO
Alarms/alerts clear, YES changes to NO
ENTER
ESCAPE
ENTER
ENTER
Summary of Contents for GEMINI SELECT 38APD025
Page 6: ...6 Fig 4 Power Wiring Schematic 38APS APD025 030...
Page 7: ...7 Fig 5 Power Wiring Schematic 38APS040 050...
Page 8: ...8 Fig 6 Power Wiring Schematic 38APD040 060...
Page 9: ...9 Fig 7 Power Wiring Schematic 38APD070 100...
Page 10: ...10 Fig 8 Control Wiring Schematic 38APS025 050...
Page 11: ...11 Fig 9 Control Wiring Schematic 38APD025 060...
Page 12: ...12 Fig 10 Control Wiring Schematic 38APD070 100...
Page 85: ......