Carrier PIC 5+ User Manual page 36

Alarm
Description of the alarm text Reset type
code*
Alm-229 ALM-221 Sensor Fault –
Common CHWR Temp
Alm-350 ALM-350 Sensor Fault - 19DV
1st Bearing Temp
Alm-351 ALM-351 Sensor Fault - 19DV
2nd Bearing Temp
Pressure transducer faults
Alm-215 ALM-215 Sensor Fault -
Condenser Pressure
Alm-216 ALM-216 Sensor Fault -
Evaporator Pressure
Alm-217 ALM-217 Sensor Fault -
Economizer Pressure
Alm-218 ALM-218 Sensor Fault - Diffuser
Pressure
Alm-219 ALM-219 Sensor Fault - Oil
Sump Pressure
Alm-220 ALM-220 Sensor Fault - Oil
Supply Pressure
Alm-225 ALM-225 Sensor Fault – Pump
Inlet Pressure
Alm-226 ALM-226 Sensor Fault –
Bearing Inlet Pressure
Alm-227 ALM-227 Sensor Fault –
Bearing Outlet Pressure
Alm-352 ALM-352 Sensor Fault - 19DV
Pump Outlet Pressure
Prestart failure
Alm-230 ALM-230 Prestart Failure - High
Bearing Temperature
Alm-231 ALM-231 Prestart Failure - High
Motor Temperature
Alm-232 ALM-232 Prestart Failure - High
Discharge Temp
36
Action taken by the
control
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Automatic if the voltage Unit shuts down
transmitted by the sensor
returns to normal
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Manual Unit shuts down.
Compressor is not allowed
to start
As above As above
As above As above
Possible cause
Check sensor resistance.
Check for proper wiring between Common CHWR Temp and IOB
connector.
Check for disconnected, grounded, or shorted wiring.
Check sensor resistance.
Check for proper wiring between 19DV 1st Bearing Temp Sensor and
IOB connector.
Check for disconnected, grounded, or shorted wiring.
Check sensor resistance.
Check for proper wiring between 19DV 2nd Bearing Temp Sensor and
IOB connector.
Check for disconnected, grounded, or shorted wiring.
Check condenser pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connector.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Evaporator pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connector.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Economizer pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connector.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Diffuser pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connector.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Oil Sump pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connector.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Oil Supply pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connectors.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Pump Inlet pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connectors.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Bearing Inlet pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connectors.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Bearing Outlet pressure transducer wiring.
Confirm that 5 V reference signal is available between IOB connectors.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check 19DV Pump Outlet Pressure transducer wiring. Confirm that
5 V reference signal is available between IOB connector.
Check for disconnected, grounded, or shorted wiring.
Check for condensation in transducer connector.
Check Comp Bearing Temp in Temperature screen.
Check oil heater and oil cooler for proper operation.
Check for low oil level, partially closed oil supply valves, clogged oil
filters.
Check the Comp Bearing Temp sensor wiring and accuracy to IOB
connector.
Check Comp Bearing Temp Alert setting.
Check Comp Motor Wind Temp in Temperature screen.
Check motor temperature sensor for wiring and accuracy to IOB
connector.
Check motor cooling line and isolation valves for proper operation, or
restrictions, check refrigerant filter/drier.
Check for excessive starts within a short time span.
Check Comp Motor Temp Override setting.
Check Comp Discharge Temp in screen.
Allow compressor discharge temperature sensor to cool.
Check compressor discharge temperature sensor wiring and accuracy
to IOB connector.
Check for excessive starts.
Check COMP DISCHARGE ALERT setting.