Eliwell ICPlus 902 - Diagnostics and Alarms; Alarm Handling and Remedies

DIAGNOSTICS
Alarms are always indicated by the alarm icon and the buzzer.
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
• Disable max/min alarm controller
• Compressor operation based on
parameters On1 and OF1
• check probe type (H00)
• check probe wiring
• replace probe
AH1
Alarm for HIGH
value (Probe1)
value read by Pb1 > HA1 after
time of tAO.
• Recording of label AH1 in folder AL
• No effect on regulation
Wait until value read by Pb1
returns below HA1.
AL1
Alarm for LOW
value (Probe1)
value read by Pb1 < LA1 after
time of tAO.
• Recording of label AL1 in folder AL
• No effect on regulation
Wait until value read by Pb1
returns above LA1.