Carrier PC211 specifications Compressor Jumpstart and Refrigerant Protection

Table 10G — Compressor Jumpstart and Refrigerant Protection

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

*[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.