47
Table 18 — PIC 5 Alert Codes (cont)
ALERT CODE
(ALARMRST)
ALERT TEXT
DESCRIPTION
RESET TYPE
ACTION TAKEN
BY CONTROL
POSSIBLE CAUSE
SENSOR ALERTS (CONT)
Alt-132
ALT-132 Sensor Alert —
Entering Chilled Water Press
Automatic when the situation
returns to normal
Alert relay is ON.
Check entering chilled water pressure sensor
voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configurations.
Alt-133
ALT-133 Sensor Alert —
Leaving Cond Water Press
Automatic when the situation
returns to normal
Alert relay is ON.
Check leaving condenser water pressure sensor
voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configurations.
Alt-134
ALT-134 Sensor Alert —
Leaving Chilled Water Press
Automatic when the situation
returns to normal
Alert relay is ON.
Check leaving chilled water pressure sensor
voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configurations.
Alt-135
ALT-135 Sensor Alert —
Guide Vane Position
Automatic when the situation
returns to normal
Alert relay is ON.
Check guide vane position feedback.
Check guide vane actuator wiring.
Alt-136
ALT-136 Configuration
Error — Temp Reset
Automatic when the situation
returns to normal
Alert relay is ON. Check temperature reset configurations.
Alt-137
ALT-137 Configuration
Error — Controlled Water
Delta T Reset
Automatic when the situation
returns to normal
Alert relay is ON.
Check controlled water temperature reset con-
figurations.
Alt-138
ALT-138 Configuration Error
— Head Pressure
Automatic when the situation
returns to normal
Alert relay is ON. Check head pressure configurations.
PROCESS ALERTS
Alt-150
ALT-150 Process Alert —
Low Discharge Superheat
Automatic when the situation
returns 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 actual SUPERHEAT in Temperature
screen.
Alt-151
ALT-151 Process Alert —
High Evaporator Approach
Automatic when the situation
returns to normal
Alert relay is ON.
Check EVAP APPROACH ALERT setting.
Check Evaporator Water Flow.
Check evaporator refrigerant liquid temperature
and leaving chilled water temperature sensor
resistances and voltage drop.
Check evaporator refrigerant liquid temperature
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 refriger-
ant stacking in the condenser.
Check chilled water valves and strainers.
Check for air in the evaporator water box or divi-
sion plate bypass.
Check for fouled tubes.
Confirm that the oil reclaim system is working.
Take oil sample and check for mineral oil con-
tamination.
Check for 20° F (11° C) temperature difference
between leaving chilled water and leaving con-
denser water.
Alt-152
ALT-152 Process Alert —
High Condenser Approach
Automatic when the situation
returns to normal
Alert relay is ON.
Check COND APPROACH ALERT setting.
Check Condenser Water Flow.
Check condenser pressure transducer and leav-
ing condenser water temperature sensor resis-
tance or voltage drop.
Check condenser shell temperature against
condenser pressure measured with a refrigerant
gage for evidence of noncondensables in refrig-
erant charge.
Check for condenser water box division plate
bypass.
Check condenser pressure transducer and leav-
ing condenser water sensor wiring to the CCM.
Check for air in the condenser water box.
Confirm that the condenser tubes are not fouled.
Alt-153
ALT-153 Process Alert —
High Noise Region
Automatic when the situation
returns to normal
Alert relay is ON.
Check the envelop control configurations and
running conditions.
Check EC/HGBP valve action.
Alt-154
ALT-154 Process Alert —
Damper Valve Alert
Automatic when the situation
returns to normal
Alert relay is ON.
Check damper valve wiring and position
feedback inputs
Alt-155
ALT-155 Process Alert —
Low Oil Pressure Differ-
ence
Automatic when the situation
returns to normal
Alert relay is ON.
Check oil pump wiring and oil filter
Quick test oil pump as necessary
Alt-156
ALT-156 Process Alert —
EC Valve Alert
Automatic when the situation
returns to normal
Alert relay is ON.
Check EC/HGBP valve wiring and feedback
inputs
To Next Page
Loading...
