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

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

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