15
“NEGATIVE TEMPERATURE” (49)
Alarms must be silenced by the “
” key.
Any alarm and signalling are visualized on the display:
LED MEANING
LED compressor
if it is lit, the compressor will be turned on
if it flashes a compressor protection will be running
LED defrost
if it is lit, the defrost will be running
if it flashes:
• a defrost delay will be running (look at the parameters C0, C1, C2 and C4)
• the dripping will be running (parameter d7)
• the heating of the freezing fluid will be running (parameter dP)
LED evaporator fan
if it is lit, the evaporator fan will be turned on
if it flashes, the after dripping evaporator fan delay will berunning (parameter F5)
ON STAND-BY LED
if it is lighted, the instrument will be in the STAND-BY mode
CODE MEANING
E0
Cabinet probe error
Remedies:
• look at parameter /0
• check the integrity of the probe
• check the connection instrument-probe
• check the cabinet temperature
Effects:
• l the compressor activity will depend on parameters C5 and C6
• if the defrost is running, it will immediately end
• the defrost will never be activated
E1
Evaporator probe error
Remedies:
• look at parameter /0
• check the integrity of the probe
• check the connection instrument-probe
• check the cabinet temperature
Effects:
• if the parameter F7 has value 3 or 4, the evaporator fan will work in accordance with the
compressor, except what you have set with the parameters F4 and F5
• the defrost will end by time (param. d3)
E2
Corrupted memory data
Flashing on the display:
• there is the corruption of the configuration data of the memory oft he instrument;
Remedies:
switch off the power supply of the instrument: unless the alarm disappears, you will have to
change the instrument
Effects:
• you can not gain access the setting procedures
• all outputs will be forced OFF
AH
Upper temperature alarm
Remedies:
• check the temperature joined to the alarm
• look at parameters A0, A1b and A2b
Effects:
• no effect
AL
Lower temperature alarm
Remedies:
• check the temperature joined to the alarm
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