Carrier PIC 5+ - Step 4: Connect Water, Vent, and Purge Piping

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Alt-138 ALT-138 Conguration Error –
Head Pressure
As above As above Check head pressure congurations
Alt-139 ALT – 139 Sensor Alert - Guide
Vane 2 Position
As above As above Check guide vane 2 position feedback

Alt-146 Process Alert - High Ref Filter
Delta Pressure
As above As above Reset shall be automatic when the situation comes back to normal
Alt-147 Process Alert - Drainage
System Failure
As above As above Reset shall be automatic when the situation comes back to normal
Alt-148 Process Alert- Purge Daily
Pumpout Limit Exceed
As above As above Reset shall be automatic when the situation comes back to normal
Alt-149 Process Alert - Low Bearing
Delta Pres Dierence
As above As above Reset shall be automatic when the situation comes back to normal
Alt-150 ALT-150 Process Alert - Low
Discharge Superheat
Automatic when the situation
comes back to normal
Alert Relay is ON 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
Alt-151 ALT-151 Process Alert - High
Evaporator Approach
As above As above
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.
Conrm that the optional refrigerant Liquid Line Isolation Valve is open.
Check for oat 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.
Conrm that the oil reclaim system is working.
Take oil sample and check for mineral oil contamination.
Check for 20 degree temperature dierence between leaving chilled
water and leaving condenser water.
Alt-152 ALT-152 Process Alert - High
Condenser Approach
As above As above 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.
Conrm that the condenser tubes are not fouled.
Alt-153 ALT-153 Process Alert - High
Noise Region
As above As above Check the envelope control congurations
Alt-154 ALT-154 Process Alert - Damper
Valve Alert
As above As above Check damper valve wiring and position feedback inputs
Alt-155 ALT-155 Process Alert - Low Oil
Pressure Dierence
As above As above Check oil pump wiring and oil lter
Quick test oil pump as necessary
Alt-156 ALT-156 Process Alert - EC
Valve Alert
As above As above Check EC valve wiring and feedback inputs
Alt-157 ALT-157 Process Alert - High
Condenser Pressure Chiller O
As above As above Check condenser pressure sensor input And check condenser
pressure override congurations
Alt-158 ALT-158 Process Alert -
Prognostic Alert
Automatic As above Check Alarm Menu – Prognostic table for detailed information
Alt-159 ALT-159 Process Alert – LEN
Scan Warning
Manual As above Check LEN bus trac with bus monitor
Alt-160 ALT-160 Process Alert – Oil
Filter Replacement
Manual As above Check oil lter
Alt-161 ALT-161 Process Alert –
Transducer Calibration
Manual As above Do the indicated transducer calibration
Alt-162 ALT-162 Process Alert – Low
Refrigerant Charge
Manual As above Recharge the refrigerant into chiller
Alt-164 ALT-164 Process Alert –
Displacement Switch Manual
Check impeller displacement switch
Alt-165 ALT-165 Process Alert – High
Oil Supply Temp
Automatic As above Check oil supply temperature and OIL EXV status
Alt-166 ALT-166 Process Alert –
Condenser Flushing
Automatic As above Flush condenser
Alt-167 ALT-167 Process Alert –
Customer Alert
Automatic As above Check Sustomer Alert input contact
Alt-168 ALT-169 Process Alert - High
Bearing Refrig Supply Temp
Automatic As above Check Bearing Refrig temperature sensor