omi PRE 15, Руководство по эксплуатации и обслуживанию, Страница: 18 / 35

Cod. 710.0048.31.01 – Rev.1A – 02.2018
ENGLISH
14 / 30
3.3.1 PROGRAMMING THE SET-POINT
When the unit is in ON-mode, push the UP or DOWN bottom: after 2 seconds the display shows SET.
Press and hold until it will show C1, then it will show the value of the parameter. If you now press DOWN or UP buttons
changes the value of the parameter: it is expressed in decimal units. While editing the parameter, the compressor LED
is blinking.
After 5 seconds without changing C1 value,
the same will be automatically stored in the parameter list. The display
continues to show the load status of the refrigerator, working normally.
3.4 DISPLAY INDICATIONS
The controller is capable of recognizing certain types of anomalies in the refrigeration circuit. In such cases, a message
will blink on the display, alternated to the current dew point value.
MESSAGE
(BLINKING)
CAUSE OUTPUTS ACTIONS
HtA
High dew point value
(delayed alarm)
Alarm output ON
Refrig. Compressor output OFF
Fan output ON
Drain cycle standard Resettable by switching off the
refrigerator.
If problem persists call your local
distributor.
Ht2
Very high dew point value
(immediate alarm)
PF1
Interruption or short circuit on the
PTC probe input line
Alarm output ON
Refrig. Compressor output OFF
Fan output OFF
Drain cycle standard
Resettable by switching off the
refrigerator. May require replacing
the faulty probe.
If problem persists call your local
distributor.
ESA
De-icing mode
Alarm output OFF
Refrig. Compressor output OFF
Fan output OFF
Drain cycle standard
No action necessary.
Automatic Reset
ES2
ASt
Activated after repeated alarms
Alarm output ON
Refrig. Compressor output OFF
Fan output ON
Drain cycle standard
Call your local distributor.
Note: PF1 has priority on all other messages.
3.5 REMOTE SIGNALING ALARM
The refrigerator control board is equipped with a dry contact for a remote alarm signal. This is
normally open contact: when an alarm is detected, this contact is closed.
Proceed as follows to activate a remote alarm output:
1. The User must review the diagram below.
2. Disconnect the refrigerator from electrical power supply, remove cover and left side panel.
3. Connect the alarm circuit to the terminal blocks (See PIC.2).
4. Replace cover, left side panel and reconnect power.
Alarm Output relays electric features:
Max. 250VAC / 3A – AC 15 (Amp. Inductive)
Pic.2