System information

50
Table 16 — PIC 5 Alert Codes (cont)
ALERT CODE
(ALARMRST)
ALERT TEXT
DESCRIPTION
RESET TYPE
ACTION TAKEN BY
CONTROL
POSSIBLE CAUSE
PROCESS ALERTS (CONT)
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 trans-
ducer and leaving condenser water
temperature sensor resistance or
voltage drop.
Check condenser shell tempera-
ture against condenser pressure
measured with a refrigerant gage
for evidence of noncondensables in
refrigerant charge.
Check for condenser water box divi-
sion plate bypass.
Check condenser pressure trans-
ducer and leaving condenser water
sensor wiring to the CCM.
Check for air in the condenser
water box. Confirm that the con-
denser 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 envelope control configu-
rations and running conditions.
Check 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 —
HGBP Valve Alert
Automatic when the situation returns
to normal
Alert relay is ON.
Check HGBP valve wiring and feed-
back inputs
Alt-157
ALT-157 Process Alert —
High Condenser Pressure
Chiller Off
Automatic when the situation returns
to normal
Alert relay is ON.
Check condenser pressure sensor
input, and check condenser pres-
sure override configurations
Alt-158
ALT-158 Process Alert —
Compressor Start Relay
Stop Failure
Manual Alert relay is ON.
Check motor starter start contactor
and current input in ISM
Alt-159
ALT-159 Process Alert —
LEN Scan Warnning
Manual Alert relay is ON.
Check LEN bus traffic with bus
monitor
Alt-160
ALT-160 Process Alert —
Oil Filter Replacement
Manual Alert relay is ON. Check oil filter
Alt-161
ALT-161 Process Alert —
Transducer Calibration
Manual Alert relay is ON.
Do the indicated transducer
calibration
Alt-162
ALT-162 Process Alert —
Low Refrigerant Charge
Manual Alert relay is ON.
Confirm that the unit has low refrig-
erant charge before adding refriger-
ant into chiller.