Alarms - Gram PRIMA-BOX GM1 Bedienungsanleitung

ALARMS

When an alarm condition occurs the unit will display an alarm code ( different according to
the nature of the alarm ):
- alarm led will be lit (4)
- buzzer will sound
- alarm relay ( for remote alarm ) will be activated
The buzzer and alarm relay can be muted by pressing any key. When a key is pressed,
the alarm led will flash for as long as the alarm condition persists.
To display the alarm code it is necessary to enter into the alarm menu:
Press ENTER key (10) for more than 3 seconds. FnC will be displayed. Press the
DEFROST/UP key (8) until AL is displayed and then press ENTER (10). At this point the
alarm code will be displayed indicating the nature of the alarm.
High Temperature Alarm ( Hl )
The red led, buzzer and remote alarm relay are activated; the alarm code Hl is displayed in
the alarm menu as indicated above. The causes can be:
- product too warm
- excessive door openings
- excessive product load
- unit malfunction
Low Temperature Alarm ( Ll )
The red led, buzzer and remote alarm relay are activated; the alarm code Ll is displayed in
the alarm menu as indicated above. The causes can be:
- malfunction of the electronic controller
High Pressure Alarm ( EO )
Each time the high pressure switch trips, the buzzer and red led are activated. If more than
10 trips occur during a 1 hour period then the unit will turn OFF automatically. The remote
alarm relay will be activated and the label Err will flash on the display alternating with the
room temperature. ; the alarm code EO is displayed in the alarm menu as indicated above.
To reset the unit it is necessary to turn the unit off, wait a few seconds and then turn it on
again using the ON/OFF key (9). The causes can be:
- dirty condenser
- condenser fan fault
- front cover is removed
- obstructed condenser air intake or outlet
- lack of ventilation
Voltage Monitor Alarm ( E8 - only when fitted as an option )
The optional voltage monitor is an electronic device which checks the units electrical
supply. Should the voltage vary by+/- 12% then it will turn off and wait 6 minutes before
attempting to re-start automatically - if the voltage has returned within limits. The red led,
buzzer and remote alarm relay are activated; the label Err will flash on the display
alternating with the room temperature. ; the alarm code E8 is displayed in the alarm menu
as indicated above.
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