System information

39
Table 15 — PIC 5 Alarm Codes (cont)
ALARM
CODE
(ALARMRST)
ALARM TEXT
DESCRIPTION
RESET TYPE
ACTION TAKEN BY
CONTROL
POSSIBLE CAUSE
PROTECTIVE LIMITS (CONT)
Alm-262
ALM-262 Protective
Limit — Condenser Freeze
Manual Unit shuts down.
The Cond Sat Refrig Temp is less
than the Condenser Freeze Point.
Check Condenser Freeze Point in
configuration.
Condenser water too cold or chiller
shut down with brine below 32 F
(0° C) in cooler so equalization tem-
perature in chiller approached 32 F
(0° C).
Check condenser pressure trans-
ducer and wiring to IOB.
Check condenser water tempera-
ture sensors and wiring to IOB.
Check refrigerant charge.
Alm-265
ALM-265 Protective
Limit — Refrigerant Leak
Manual Unit shuts down.
REFRIGERANT LEAK OPTION is
Enabled and the REFRIGERANT
LEAK SENSOR output exceeded
REFRIGERANT LEAK ALARM mA.
Check for refrigerant leaks.
Check leak detector for proper
operation.
Check REFRIGERANT LEAK
ALARM mA setting in the OPTIONS
screen.
Check 4 to 20 mA or 1 to 5 v output
from refrigerant leak sensor to IOB.
Confirm that IOB SW2 dip switch 1
is in the correct position.
Alm-266
ALM-266 Protective
Limit — IOB Low Voltage
Automatic Unit shuts down.
Check IOB 24 VAC power supply
and the transformer output voltage.
Alm-267
ALM-267 Protective
Limit — Guide Vane Fault
Manual Unit shuts down.
Alarm before start indicates guide
vane opening has not closed to less
than 4%.
Alarm while running indicates guide
vane position is < -1% or > 103%.
Enter Quick Test and conduct
Guide Vane Calibration.
Check wiring between the guide
vane feedback potentiometer and
IOB terminals.
Check the 10,000 ohm guide vane
position feedback potentiometer or
4 to 20mA current.
Alm-268
ALM-268 Protective
Limit — Damper Valve
Fault
Manual Unit shuts down.
Check damper valve wirings.
Do a control test on the damper
valve to check the feedback signals.
Alm-269
ALM-268 Protective
Limit — HGBP Valve Fault
Manual Unit shuts down.
Check HGBP valve wirings.
Do a control test on the HGBP valve
to check the feedback signals.
Alm-270
ALM-270 Protective
Limit — High Cond Water
Flow
Manual Unit shuts down.
Check condenser water pressure
sensor and wirings.
Alm-271
ALM-271 Protective
Limit — Emergency Stop
Automatic Unit shuts down.
Check EMSTOP command from
network and the remote stop dry
contact from IOB.