Specifications

Table 33 — Alarm and Alert Codes (cont)
ALARM/ALERT
CODE
ALARM OR
ALERT
DESCRIPTION
WHY WAS THIS
ALARM GENERATED?
ACTION TAKEN
BY CONTROL
RESET
METHOD
PROBABLE
CAUSE
CPM SUBCODES
(xx)
x.85 Alarm Motor Over Temperature CPM detects high motor
temperature
Comp. shut down Manual/Button Motor cooling (all) or
Economizer (2 comp.
circuits) solenoid failure,
low refrigerant charge.
x.9 Alarm Open Thermistor CPM detects open
circuit in motor temp
thermistor
Comp. shut down Manual/Button Wiring error or faulty
thermistor.†
x.95 Alarm Config. Header Fault CPM finds error with
MTA value punched out
in header
Comp. shut down Manual/Button Header pins on CPM
board either all or none
punched out, header not
fully seated in CPM
board.
x.10 Alarm Shorted Thermistor CPM detects short
circuit in motor tempt
thermistor
Comp. shut down Manual/Button Wiring error or faulty
thermistor.†
ALARM/ALERT
CODE
7 Alert Cir. A Discharge Gas
Thermistor Failure
Thermistor outside
range of −40 to 245 F
(−40 to 118 C) or DGT
>210 F (98.9 C)
Circuit A shut down Manual Thermistor failure, motor
cooling solenoid failure
or wiring error.
8 Alert Cir. B Discharge Gas
Thermistor Failure
Thermistor outside
range of −40 to 245 F
(−40 to 118 C) or DGT
>210 F (98.9 C)
Circuit B shut down Manual Thermistor failure, motor
cooling solenoid failure
or wiring error.
9 Alarm Cooler Leaving Fluid
Thermistor Failure
Thermistor outside
range of −40 to 245 F
(−40 to 118 C)
Chiller shut down. Automatic Thermistor failure, dam-
aged cable/wire or wir-
ing error.
10 Alarm Cooler Entering Fluid
Thermistor Failure
Thermistor outside
range of −40 to 245 F
(−40 to 118 C).
Uses 0.1° F/% Total Ca-
pacity as rise/ton.
Automatic Thermistor failure, dam-
aged cable/wire or wir-
ing error.
11 Alert Condenser Leaving
Fluid Thermistor Failure
Thermistor outside
range of −40 to 245 F
(−40 to 118 C)
None. Chiller continues
to run.
Automatic Thermistor failure, dam-
aged cable/wire or wir-
ing error.
12 Alert Condenser Entering
Fluid Thermistor Failure
Thermistor outside
range of −40 to 245 F
(−40 to 118 C)
None. Chiller continues
to run.
Automatic Thermistor failure, dam-
aged cable/wire or wir-
ing error.
15 Alert Compressor A1 High
Motor Temperature
Thermistor outside
range of −39.9 to 245 F
(−39.9 to 118 C) for 5
consecutive readings
Compressor A1 shut
down
Manual Thermistor failure, motor
cooling (all) or Econo-
mizer (2 comp. circuits)
solenoid failure.
16 Alert Compressor A2 High
Motor Temperature
Thermistor outside
range of −39.9 to 245 F
(−39.9 to 118 C) for 5
consecutive readings
Compressor A2 shut
down
Manual Thermistor failure, motor
cooling (all) or Econo-
mizer (2 comp. circuits)
solenoid failure.
17 Alert Compressor B1 High
Motor Temperature
Thermistor outside
range of −39.9 to 245 F
(−39.9 to 118 C) for 5
consecutive readings
Compressor B1 shut
down
Manual Thermistor failure, motor
cooling (all) or Econo-
mizer (2 comp. circuits)
solenoid failure.
18 Alert Compressor B2 High
Motor Temperature
Thermistor outside
range of −39.9 to 245 F
(−39.9 to 118 C) for 5
consecutive readings
Compressor B2 shut
down
Manual Thermistor failure, motor
cooling (all) or Econo-
mizer (2 comp. circuits)
solenoid failure.
21 Alert External Reset Tem-
perature Thermistor
Failure
Thermistor outside
range of −40 to 245 F
(−40 to 118 C)
Reset disabled. Runs
under normal control/
set points.
Automatic Thermistor failure or
wiring error.
22 Alert Circuit A Discharge
Pressure Transducer
Failure
Calibration offset more
than 6 PSIG or Voltage
ratio (volts read/ref. volt-
age) more than 99.9%
or less than 0.5%.
Circuit A shut down Automatic Transducer failure,
power supply failure or
wiring damage/error.
23 Alert Circuit B Discharge
Pressure Transducer
Failure
Calibration offset more
than 6 PSIG or Voltage
ratio (volts read/ref. volt-
age) more than 99.9%
or less than 0.5%.
Circuit B shut down Automatic Transducer failure,
power supply failure or
wiring damage/error.
24 Alert Circuit A Suction Pres-
sure Transducer Failure
Calibration offset more
than 6 PSIG or Voltage
ratio (volts read/ref. volt-
age) more than 99.9%
or less than 0.5%.
Circuit A shut down Automatic Transducer failure,
power supply failure or
wiring damage/error.
25 Alert Circuit B Suction Pres-
sure Transducer Failure
Calibration offset more
than 6 PSIG or Voltage
ratio (volts read/ref. volt-
age) more than 99.9%
or less than 0.5%.
Circuit B shut down Automatic Transducer failure,
power supply failure or
wiring damage/error.
26 Alert Comp A1 Oil Pressure
Transducer Failure
Calibration offset more
than 6 PSIG or Voltage
ratio (volts read/ref. volt-
age) more than 99.9%
or less than 0.5%.
Comp A1 shut down Automatic Transducer failure,
power supply failure or
wiring damage/error.
27 Alert Comp A2 Oil Pressure
Transducer Failure
Calibration offset more
than 6 PSIG or Voltage
ratio (volts read/ref. volt-
age) more than 99.9%
or less than 0.5%.
Comp A2 shut down Automatic Transducer failure,
power supply failure or
wiring damage/error.
45