Revision 1 – 04.12.2015 22/28
WARNINGS (VISUAL ALARMS)
Air end temperature over set WT2.
Reset while temperature below WT2-5°C
Air filter pressure switch closed (IN5)
No communication or Master failure: each Slave works stand alone
Delta P (internal pressure – working pressure) over warning set AP2 when the
timer C19.1 is over and the air end temperature is over 45°C (alarm managed
by aux pressure transducer set into differential operation (C19=1)
Power supply to the controller lower than 11.6Vac and automatic reset when
the voltage rise over 12Vac
Power supply to the controller over 14.5Vac
Try to switch off and switch on the controller: if the problem goes on contact
the compressor manufacturer
Master/slave communication is gone: auto reset while communication restart
properly
Automatic change DLS/Summer time
Starts/hour over set on parameter “Starts/hour” (menu 4).
The compressor will not stop and keep on running loading/unloading according
the pressure till the end of one hour time from the first starting in the same
hour
Inverter failure detected in case of inverter connected vua RS485 (managed in
case of inverter communication via RS485 enabled (DR0>0))
NOTE:
In case of warning the relay set as alarm output is activated with intermittency further to led DL1; the alarm
message is stored into the alarms list.
When the message is visualized (in case it has not automatic reset), by pushing the button R you can reset the
message.
MESSAGES VISUALIZED INTO ALARM LIST ONLY
Restart changed from automatic into manual
Restart changed from manual into automatic
Timer CAF in menu 10 elapsed
Timer COF in menu 10 elapsed
Timer C— in menu 10 elapsed
Timer C-h in menu 10 elapsed
Timer C-BL in menu 10 elapsed
The message is shown with the symbol and related code.
If you reset the alarm only, the icon remain in the left upper corner of the display until you reset the counter too.