Carrier PIC 5+ User Manual page 44

6.4.2 - General Alert Codes
ALARMRST
Description of the alarm text Reset type
code*
Prestart alert
Alt-100 ALT-100 Prestart Alert - Starts
Limit Exceeded
Alt-101 ALT-101 Prestart Alert - Low Oil
Temperature
Alt-102 ALT-102 Prestart Alert - High
Condenser Pressure
Alt-103 ALT-103 Prestart Alert -
Excessive Recycle Starts
Alt-104 ALT-104 Prestart Alert - Waiting
For Start Permission
Sensor alert
Alt-120 ALT-120 Sensor Alert - Remote
Temperature Out of Range
Alt-121 ALT-121 Sensor Alert - Auto
Water Temp Reset
Alt-122 ALT-122 Sensor Alert - Auto
Demand Limit Input
Alt-123 ALT-123 Sensor Alert - VFD
Speed Out Of Range
Alt-124 ALT-124 Sensor Alert - Humidity
Sensor
Alt-125 ALT-125 Sensor Alert -
Refrigerant Leak Input
Alt-126 ALT-126 Sensor Alert – Diffuser
Pos Feedback
Alt-127 ALT-127 Sensor Alert - VFD
Current Input
Alt-128 ALT-128 Sensor Alert - High
Cond Water Pressure
Alt-129 ALT-129 Sensor Alert - Leaving
Cond Water Temp
Alt-130 ALT-130 Sensor Alert - Entering
Cond Water Temp
Alt-131 ALT-131 Sensor Alert - Entering
Cond Water Press
Alt-132 ALT-132 Sensor Alert - Entering
Chilled Water Press
Alt-133 ALT-133 Sensor Alert - Leaving
Cond Water Press
Alt-134 ALT-134 Sensor Alert - Leaving
Chilled Water Press
Alt-135 ALT-135 Sensor Alert - Guide
Vane 1 Position
Alt-136 ALT-136 Configuration Error
- Temp Reset
Alt-137 ALT-137 Configuration Error -
Controlled Water Delta T Reset
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Action taken by the
control
Automatic when the situation Turn On Alert Relay
comes back to normal
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Automatic when the situation Alert Relay is ON
comes back to normal
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Possible cause
Check STARTS IN 12 HOURS in Run times screen.
Enable "Enable Excessive Starts" option in "service" menu if additional
start is required.
(Recycle restarts and auto restarts after power failure are not counted.)
Check OIL SUMP TEMP in default screen.
Check oil heater contactor/relay and power.
Check Oil Sump Temperature Sensor wiring and accuracy.
Check oil level and oil pump operation. Check EVAP SAT TEMP.
Check CONDENSER PRESSURE.
Check Condenser Pressure transducer wiring and accuracy.
Check for high condenser water temperatures.
Check COND PRESS OVERRIDE in confiuration.
Chiller load is too low to keep compressor on line and there has
been more than 5 starts in 4 hours.
Increase chiller load, adjust ecv to open at a higher load, increase
recycle RESTART DELTA T in service menu.
Check ec isolation valve position.
Check whether Power Request Option is enabled by mistake.
If the ship's power system not receive the power request signal,
check the connection of power request output.
If the ship's power system does not give the power permission
signal, check the ship's power system.
If the chiller does not receive the power permission signal, check
the connect of power permission input.
Type 2 Temperature Reset is Enabled and Remote Temperature Reset
sensor is out of range.
Check ENABLE RESET TYPE and TEMPERATURE RESET settings
in TEMP_CNTL screen.
Check Remote Temperature Reset sensor resistance or voltage drop.
Check for proper wiring to CCM J4-13 & J4-14.
CheckTemp Reset Configuration
Confirm that Auto Water Temp Reset Input is between 4 mA and
20 mA.
Confirm that wiring to IOB connector is not grounded.
20mA DEMAND LIMIT OPT is Enabled, Ice Build is not Active, and
Auto
Demand Limit Input on IOB is < 2 mA. Check 20 mA DEMAND
LIMIT OPT and DEMAND LIMIT AT 20 mA in Service screen.
Confirm that Auto Demand Limit Input is between 4 mA and 20 mA.
Confirm that wiring to IOB connector is not grounded.
Check VFD speed feedback input in ISM
Check humidity sensor input in IOB
Check refrigerant leak optional input in IOB
Check Diffuser Position feedback
Check VFD current input
Check optional condenser water pressure sensor
Check condenser water flow
LEAVING CONDENSER WATER temperature sensor reading is
out of range.
Check LEAVING CONDENSER WATER sensor resistance or
voltage drop..
Check for proper wiring to IOB. Check for grounded sensor leads.
Entering Condenser Water temperature sensor reading is out of
range.
Check Entering Condenser Water sensor resistance or voltage drop..
Check for proper wiring to IOB. Check for grounded sensor leads.
Check Entering Condenser Water pressure sensor voltage drop.
Check for proper wiring to IOB. Check for grounded sensor leads.
Check Entering Chilled Water pressure sensor voltage drop.
Check for proper wiring to IOB. Check for grounded sensor leads.
Check Leaving Condenser Water pressure sensor voltage drop.
Check for proper wiring to IOB. Check for grounded sensor leads.
Check Leaving Chilled Water pressure sensor voltage drop.
Check for proper wiring to IOB. Check for grounded sensor leads.
Check guide vane 1 position feedback
Check temp reset configurations
Check controlled water temp reset configurations