BLOCKSYSTEM FS Pag. 29 Rev. 02 02/07
UK
(**) Note : The “LAn” network parameter only serves in the event of MASTER/SLAVE or REMOTE CONTROL
operation
8.
ALARM SIGNALS
In the event of an alarm, the card normally activates the following:
• the relevant alarm code is shown on the display. In particular, the control alternates the
alarm code and the temperature that is normally shown on the display; if there is more than
one alarm, they are displayed in succession, alternated with the temperature
• the alarm LED is switched on
• the alarm relay is triggered.
For some alarms and signals, the LED and/or relay are not triggered. The table below gives a
detailed description for each alarm and the relevant actions undertaken.
Pressing any button will deactivate the relay (if triggered) and the LED will blink, while the alarm code
will remain on the display. The LED will switch off and the alarm code will disappear only when the
cause behind it has ceased. The alarm codes are listed in the table below:
Code
displayed
Description/Control
LED
enable
Relay
enable
Reset Mode
E1 cold room probe temperature error
if a probe is used for adjustment, the compressor
will be activated cyclically and defrosting cycles will
be disabled;
if a balanced network probe is enabled, adjustment
will continue, bypassing the malfunctioning probe
yes yes automatic when the
condition ceases
E2 End defrostin probe g error
defrosting will end due to timeout
yes yes automatic when the
condition ceases
3
rd
probe error (condenser temperature)
the associated controls are disabled
blink. no E3
3
rd
probe error (2nd evaporator temperature)
defrosting will end due to timeout
yes yes
automatic when the
condition ceases
heat alarm (*)
adjustment is disabled
yes no automatic when the
condition ceases
HP pressure switch alarm (*)
adjustment is disabled
yes no automatic when the
condition ceases
LP pressure switch alarm (*)
adjustment is disabled
yes no automatic when the
condition ceases
E4 repeated heat alarm
adjustment is disabled permanently
yes yes at switch on
E5 repeated HP pressure switch alarm
adjustment is disabled permanently
yes yes at switch on
E6 repeated LP pressure switch alarm
adjustment is disabled permanently
yes yes at switch on
LO low temperature alarm
yes yes automatic when the
condition ceases
HI high temperature alarm
yes yes automatic when the
condition ceases
EE data saving alarm
default parameters are loaded
yes yes at power-on or after
the parameter has
been stored to
memory
Ec condenser cleaning alarm
blink. no automatic when the
condition ceases
Er network alarm (**)
yes yes automatic when the
condition ceases
Ed defrosting timeout alarm
blink. no automatic at the
start of the next
defrost
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