Carrier PIC 5+ User Manual page 45

ALARMRST
Description of the alarm text Reset type
code*
Alt-138 ALT-138 Configuration Error –
Head Pressure
Alt-139 ALT – 139 Sensor Alert - Guide
Vane 2 Position
Process alert
Alt-146 Process Alert - High Ref Filter
Delta Pressure
Alt-147 Process Alert - Drainage
System Failure
Alt-148 Process Alert- Purge Daily
Pumpout Limit Exceed
Alt-149 Process Alert - Low Bearing
Delta Pres Difference
Alt-150 ALT-150 Process Alert - Low
Discharge Superheat
Alt-151 ALT-151 Process Alert - High
Evaporator Approach
Alt-152 ALT-152 Process Alert - High
Condenser Approach
Alt-153 ALT-153 Process Alert - High
Noise Region
Alt-154 ALT-154 Process Alert - Damper
Valve Alert
Alt-155 ALT-155 Process Alert - Low Oil
Pressure Difference
Alt-156 ALT-156 Process Alert - EC
Valve Alert
Alt-157 ALT-157 Process Alert - High
Condenser Pressure Chiller Off
Alt-158 ALT-158 Process Alert -
Prognostic Alert
Alt-159 ALT-159 Process Alert – LEN
Scan Warning
Alt-160 ALT-160 Process Alert – Oil
Filter Replacement
Alt-161 ALT-161 Process Alert –
Transducer Calibration
Alt-162 ALT-162 Process Alert – Low
Refrigerant Charge
Alt-164 ALT-164 Process Alert –
Displacement Switch Manual
Alt-165 ALT-165 Process Alert – High
Oil Supply Temp
Alt-166 ALT-166 Process Alert –
Condenser Flushing
Alt-167 ALT-167 Process Alert –
Customer Alert
Alt-168 ALT-169 Process Alert - High
Bearing Refrig Supply Temp
Action taken by the
control
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
Automatic when the situation Alert Relay is ON
comes back to normal
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
Automatic As above
Manual As above
Manual As above
Manual As above
Manual As above
Automatic As above
Automatic As above
Automatic As above
Automatic As above
Possible cause
Check head pressure configurations
Check guide vane 2 position feedback
Reset shall be automatic when the situation comes back to normal
Reset shall be automatic when the situation comes back to normal
Reset shall be automatic when the situation comes back to normal
Reset shall be automatic when the situation comes back to normal
Check for oil loss from compressor or excess oil charge.
Check for excess refrigerant charge.
Verify that the valves in the oil reclaim lines are open. Check oil
reclaim strainers.
Check acyual SUPERHEAT in Temperature screen
Check EVAP APPROACH ALERT setting.
Check Evaporator Water Flow.
Check EVAP REFRIG LIQUID TEMP and LEAVING CHILLED WATER
temperature sensor resistances and voltage drop.
Check EVAP REFRIG LIQUID TEMP and LEAVING CHILLED WATER
temperature sensor wiring to the IOB terminal block.
Check for oil loss or low refrigerant charge.
Check oil reclaim line isolation valves and strainers.
Confirm that the optional refrigerant Liquid Line Isolation Valve is open.
Check for float valve operation and for refrigerant stacking in the
condenser.
Check chilled water valves and strainers.
Check for air in the evaporator water box or division plate bypass.
Check for fouled tubes.
Confirm that the oil reclaim system is working.
Take oil sample and check for mineral oil contamination.
Check for 20 degree temperature difference between leaving chilled
water and leaving condenser water.
Check COND APPROACH ALERT setting .
Check Condenser Water Flow.
Check CONDENSER PRESSURE transducer and LEAVING
CONDENSER WATER temperature sensor resistance or voltage
drop.
Check condenser shell temperature against condenser pressure
measured with a refrigerant gage for evidence of non-condensable
in refrigerant charge.
Check for condenser water box division plate bypass.
Check CONDENSER PRESSURE transducer and LEAVING
CONDENSER WATER sensor wiring to the CCM.
Check for air in the condenser water box.
Confirm that the condenser tubes are not fouled.
Check the envelope control configurations
Check damper valve wiring and position feedback inputs
Check oil pump wiring and oil filter
Quick test oil pump as necessary
Check EC valve wiring and feedback inputs
Check condenser pressure sensor input And check condenser
pressure override configurations
Check Alarm Menu – Prognostic table for detailed information
Check LEN bus traffic with bus monitor
Check oil filter
Do the indicated transducer calibration
Recharge the refrigerant into chiller
Check impeller displacement switch
Check oil supply temperature and OIL EXV status
Flush condenser
Check Sustomer Alert input contact
Check Bearing Refrig temperature sensor
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