DIAGNOSTICS
Alarms are always indicated by the alarm icon , the buzzer and the relay (if setting).
To switch off the buzzer, press and release any key; the corresponding icon will continue to flash.
N.B.: If alarm exclusion times have been set (see ‘AL’ folder in the parameters table) the alarm will not be signalled.
ALARMs
Label Fault Cause Effects Remedy
E1
Probe1 faulty
(ambient)
• measured values are outside
operating range
• Probe faulty/short-circuited/open
• Display label E1
• Alarm icon permanently on
• Relay activation (if setting)
• Disable max/min alarm controller
• Compressor operation based on
parameters On1/2 and OF1/2
• check probe type (H00)
• check probe wiring
• replace probe
AH1/2
Alarm for HIGH
value (Probe1)
value read by Pb1 > HA1/2 after
time of tAO.
(see ‘MAX/MIN TEMP. ALARMS’)
• Recording of label AH1/2 in folder AL
• Relay activation (if setting)
• No effect on regulation
Wait until value read by Pb1
returns below HA1/2.
AL1/2
Alarm for LOW
value (Probe1)
value read by Pb1 < LA1/2 after
time of tAO.
(see ‘MAX/MIN TEMP. ALARMS’)
• Recording of label AL1/2 in folder AL
• Relay activation (if setting)
• No effect on regulation
Wait until value read by Pb1
returns above LA1/2.
EA External alarm
Digital input activated
(H11 = ±5)
• Recording of label EA in folder AL
• Alarm icon permanently on
• Relay activation (if setting)
• Regulation locked
Check and remove the external
cause which triggered the alarm
on the D.I.
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