Heatcraft Refrigeration Products PRO3 manual Alarm Signals, Other Messages, Technical Data, Cause

Alarm Signals

Message	Cause	Outputs
P1	Room probe failure	Compressor output according
		to parameters “Con” and “COF”
P2	Evaporator probe	Defrost end is timed
	failure
P3	Third probe failure	Outputs unchanged
P4	Fourth probe	Outputs unchanged
	failure
HA	Maximum	Outputs unchanged
	temperature alarm
LA	Minimum	Outputs unchanged
	temperature alarm
HA2	Condenser high	It depends on the Ac2
	temperature	parameter
LA2	Condenser low	It depends on the bLL
	temperature	parameter
dA	Door open	Compressor and fans restarts
EA	External alarm	Output unchanged

Alarm Recovery

Probe alarms P1, P2, P3 and P4 start some seconds after the fault in the related probe; they automatically stop some seconds after the probe restarts normal operation. Check connections before replacing the probe.

Temperature alarms HA, LA, HA2 and LA2 automatically stop as soon as the temperature returns to normal values.

Other Messages

Message	Meaning
Pon	Keyboard unlocked
PoF	Keyboard locked
noP	In programming mode: none parameter is present in Pr1
	On the display the selected probe is not enabled
noA	None alarm is recorded

Installation and Operations Manual

Technical Data

Characteristic	Description
Housing	self extinguishing ABS
Case	XR40CX/XR60CX frontal 32x74 mm;
	depth 60mm
Mounting	XR40CX/XR60CX panel mounting in a
	71x29mm panel cut-out
Protection	IP20
Frontal protection	XR40CX/XR60CX IP65
Connections	Screw terminal block ≤ 2,5 mm2 wiring
Power supply	according to the model: 12Vac/dc,
	±10%; 24Vac/dc, ±10%; 230Vac ±10%,
	50/60Hz, 110Vac ±10%, 50/60Hz
Power absorption	3VA max
Display	3 digits, red LED, 14,2 mm high;
Inputs	Up to 4 NTC or PTC probes
Digital input	free voltage contact
Relay outputs	compressor: SPST 8(3) A, 250Vac; SPST
	16(6)A 250Vac or 20(8)A 250Vac
	defrost: SPDT 8(3) A, 250Vac
	fan (XR60CX only): SPST 8(3) A, 250Vac
	or SPST 5(2) A
Data storing	on the non-volatile memory (EEPROM)
Kind of action	1B
Pollution grade	2
Software class	A
Rated impulsive voltage	2500V
Overvoltage Category	II
Operating temperature	0÷60 °C
Storage temperature	-30÷85 °C
Relative humidity	20÷85% (no condensing)
Measuring and	NTC probe: -40÷110°C (-40÷230°F)
regulation range	PTC probe: -50÷150°C (-58÷302°F)
Resolution	0,1 °C or 1°C or 1 °F (selectable)
Accuracy (ambient	±0,7 °C ±1 digit
temp. 25°C)

12