Carrier PC211 specifications Power Loss Power Loss Check

Table 10K — Machine Protect Limit Faults (Continued)

WARNING ! WARNING

Excessive numbers of the same fault can lead to severe machine damage.

Seek service expertise.

Primary	Secondary	Alarm Message/		Additional Cause/Remedy
Message	Message	Primary Cause
Protective	Power Loss	V	P Power Loss: Check
Limit		voltage supply.
				Check 24-vdc input sensor on the SMM;
Protective	Low Line Voltage	V P [VALUE] exceeded
				adjust potentiometer if necessary. Check
		limit of [LIMIT]*. Check
Limit
		voltage supply.		transformers to SMM. Check power to
				PSIO module. Check distribution bus.
	High Line Voltage	V P [VALUE] exceeded
Protective				Consult power company.
		limit of [LIMIT]*. Check
Limit
		voltage supply.
Protective	Low Chilled Water	EVFL Flow Fault: Check
Limit	Flow	evap pump/flow switch.		Perform pumps Control Test and verify
				proper switch operation. Check all water
Protective	Low Condenser	CDFL Flow Fault: Check		valves and pump operation.
Limit	Water Flow	cond pump/flow switch.
	High Condenser	High Cond Pressure		Check the high-pressure switch. Check
Protective	Pressure	[OPEN]: Check switch,		for proper condenser pressures and con-
		2C aux., and water temp/		denser waterflow. Check for fouled tubes.
Limit		flow.		Check the 2C aux. contact and the oil
				pressure switch in the power panel. This
				alarm is not caused by the transducer.
Protective	High Condenser	High Cond Pressure		Check water flow in condenser. Check for
	Pressure	[VALUE]: Check switch,		fouled tubes. Transducer should be
Limit		water flow, and trans-		checked for accuracy. This alarm is not
		ducer.		caused by the high pressure switch.
Protective	1CR Aux Contact	CR AUX Starter Contact		1CR auxiliary contact opened while
	Fault	Fault: Check 1CR/1M aux		machine was running. Check starter for
Limit
		contacts.		proper operation.
Protective	Run Aux Contact	RUN AUX Starter Con-		Run auxiliary contact opened while
	Fault	tact Fault: Check 1CR/1M		machine was running. Check starter for
Limit
		aux contacts.		proper operation.