System information

48
Table 16 — PIC 5 Alert Codes (cont)
ALERT CODE
(ALARMRST)
ALERT TEXT
DESCRIPTION
RESET TYPE
ACTION TAKEN BY
CONTROL
POSSIBLE CAUSE
SENSOR ALERTS (CONT)
Alt-122
Alt-122 Sensor Alert —
Auto Demand Limit Input
Automatic when the situation returns
to normal
Alert relay is ON.
20 mA DEMAND LIMIT OPT is
Enabled, Ice Build is not Active, and
Auto Demand Limit Input on IOB is
< 2 mA.
Check 20 mA DEMAND LIMIT OPT
and DEMAND LIMIT AT 20 mA in
Service screen. Confirm that Auto
Demand Limit Input is between 4
mA and 20 mA.
Check IOB channel type configura-
tions and SW2 dip switch setting in
IOB.
Alt-123
Alt-123 Sensor Alert —
VFD Speed Out of Range
Automatic when the situation returns
to normal
Alert relay is ON.
Check VFD speed feedback input in
ISM
Alt-124
Alt-124 Sensor Alert —
Humidity Sensor
Automatic when the situation returns
to normal
Alert relay is ON.
Check humidity sensor input in IOB
Alt-125
Alt-125 Sensor Alert —
Refrigerant Leak Input
Automatic when the situation returns
to normal
Alert relay is ON.
Check refrigerant leak optional
input in IOB
Alt-127
Alt-127 Sensor Alert —
High Chilled Water
Pressure
Automatic when the situation returns
to normal
Alert relay is ON.
Check optional evaporator water
pressure sensor.
Check evaporator water flow.
Alt-128
Alt-128 Sensor Alert —
High Cond Water Pressure
Automatic when the situation returns
to normal
Alert relay is ON.
Check optional condenser water
pressure sensor.
Check condenser water flow.
Alt-129
Alt-129 Sensor Alert —
Leaving Cond Water Temp
Automatic when the situation returns
to normal
Alert relay is ON.
Leaving condenser water tempera-
ture sensor reading is out of range.
Check leaving condenser water
sensor resistance or voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configura-
tions.
Alt-130
ALT-130 Sensor Alert —
Entering Cond Water
Temp
Automatic when the situation returns
to normal
Alert relay is ON.
Entering condenser water tempera-
ture sensor reading is out of range.
Check entering condenser water
sensor resistance or voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configura-
tions.
Alt-131
ALT-131 Sensor Alert —
Entering Cond Water
Press
Automatic when the situation returns
to normal
Alert relay is ON.
Check entering condenser water
pressure sensor voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configura-
tions.
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 pres-
sure sensor voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configura-
tions.
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 configura-
tions.
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 pres-
sure sensor voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configura-
tions.