Evco EV3 CHIL User Manual

EVCO S.p.A. EV3 CHIL & EVD CHIL | Installer manual ver. 1.2 | Code 1443DCHILE124
page 35 of 46
8 ALARMS
8.1 Initial information
All the alarms re-arm automatically except for:
- Antifreeze alarm: manual re-arm
- Low pressure alarm: manual re-arm if, in an hour, the number of events is higher than parameter AL01
- Flow alarm: manual re-arm if, in an hour, the number of events is higher than parameter AL07
Prolonged pressure of the On/stand-by key resets all the manual re-arm alarms and the counters of the events number per hour.
8.2 List of alarms
The table below shows the meaning of the device’s various alarm codes.
CODE DESCRIPTION
AHP1
High pressure alarm
The alarm is activated both by the maximum pressure switch and when the value of the condensation probe exceeds the
threshold set by AL05. The alarm is deactivated when both conditions return to normal.
Main results
- The compressor is switched off.
ALP1
Low pressure alarm
This alarm is activated when the pressure switch detects low pressure. It is deactivated when the pressure switch is re-
armed.
The alarm activates with a delay of Al102 from when the compressor is switched on.
Main results
- The compressors and fan are switched off.
AtC1
Compressor thermal alarm
The alarm is activated if the input configured as compressor thermal alarm is active. It deactivates if the input is
inactive.
Main results
- The compressor 1 switches off.
AdS1
Compressor 1 discharge alarm
The alarm is activated when the value detected by the probe configured as compressor discharge temperature rises
above the value expressed by AL17. It deactivates when the temperature falls below the value expressed by AL17 –
AL18.
Main results
- The compressor is switched off.
AtF1
Fan thermal alarm
The alarm is activated if the input configured as fan thermal alarm is active. It deactivates if the input is inactive.
Main results
- The compressors and fan are switched off.
AFr1
Antifreeze alarm
The alarm is calculated on the minimum temperature reading of the input and output water probes: the alarm is
activated when the minimum value is below AL12; it is deactivated when the value is above AL12+AL13.
The alarm is delayed for a period equalling AL11 from when it is switched on in hot mode.
Main results
- The compressor and fan are switched off.

Evco EV3 CHIL Specifications

General

Brand	Evco
Model	EV3 CHIL
Category	Controller
Language	English