Carrier 17/19EX - Manual (Page 317)

* [LIMIT] is shown on the LID as the temperature, pressure, voltage, etc., set point predefined or selected
by the operator as an override, alert, or alarm condition. [VALUE] is the actual pressure, temperature,
voltage, etc., at which the control tripped.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages
with Troubleshooting Guides
G. Compressor Jumpstart and Refrigerant Protection
Primary Message
Secondary
Message Alarm Message/Primary
Cause
Additional Cause/Remedy
Unauthorized
Operation
Unit Should Be
Stopped CA P Emergency: Compres-
sor running without control
authorization. Compressor is running with
more than 10% RLA and control
is trying to shut it down. Throw
power off to compressor if
unable to stop. Determine cause
before repowering.
Potential Freeze-
up
Evap Press/Temp
Too Low ERT Emergency: Freeze-up
prevention. Determine cause. If pumping
refrigerant out of machine, stop
operation and go over pumpout
procedures.
Failure To Stop
Disconnect Power RUN AUX Emergency: DIS-
CONNECT POWER. Starter and run and start con-
tacts are energized while control
tried to shut down. Disconnect
power to starter.
Loss Of
Communciation
With Starter Loss of Communication with
Starter: Check machine. Check wiring from PSIO to
SMM. Check SMM module trou-
bleshooting procedures.
Starter Contact
Fault
Abnormal 1CR or
RUN AUX 1CR AUX Starter Contact
Fault: Check 1CR/1M aux.
contacts. Starter run and start contacts
energized while machine was
off. Disconnect power.
Potential Freeze-
up
Cond Press/Temp
Too Low CRT [VALUE] exceeded limit
of [LIMIT]* Emergency:
Freeze-up prevention. The condenser pressure trans-
ducer is reading a pressure that
could freeze the water in the
condenser tubes. Check for con-
denser refrigerant leaks, bad
transducers, or transferred
refrigerant. Place the unit in
Pumpdown mode to eliminate
ALARM if vessel is evacuated.