24
11 - SAFETY FUNCTIONS
Alarms 01/02
17:00 01/01/2023
AV01-Compressor lock
for heating of the
cranckcase heater (8h)
7h 59m 35s
Alarms 01/02
17:00 01/01/2023
AL23-Clogged filter
(only indication)
A01c1
Power ON
Hora : 00:00
Fecha: 00/00/2000
Power OFF
Hora: 00:00
Fecha: 00/00/2000
Alarms 01/02
17:00 01/01/2023
AV02-Hihg rpm warning
supply fans
(only indication)
11.6. Compressor lock
In the event of a power cut-o for a period longer than 2 hours,
the compressors will be locked. The unit must remain 8 hours
consecutively with voltage to unlock the compressors.
The warning screen on the Graphic terminal also shows the
remaining time until the end of the locking.
From a screen of the Group H. SERCONFIG = f. Working
Hours (protected by level 2 password) allows to reset this lock of
compressors, but this shall be recorded in the data register of the
control.
11.9. Protections against low temperature
(optional)
The control can manage the following protections by means of the
c.pCOe expansion card with address 8:
Compressor with an additional crankcase heater
Electrical heater for antifreeze protection of external dampers.
Electrical heater for protecting the electric panel (1 or 2 stages).
Hot water coil circuit with the GREAT COLD option. This protection
includes an electrical heating for the piping layout.
11.10. Clogged fi lter detector (optional)
A clogged fi lter switch can be connected on the digital input DI6).
This protection can be confi gured for only signalling on the terminal
(by default) or to stop the unit.
11.7. High temperature safety in tandem com-
pressors (optional)
In units with tandem compressors, working in COOLING mode, when
the outdoor coil pressure of a circuit overcomes a limit value (41,5
bar by default), one of the two compressors will be stopped, thereby
avoiding the stop of both compressors due to the high pressure.
This compressor will start working again if the pressure drops below
36,5 bar.
11.11. High-speed safety on plug-fans (optional)
The Graphic terminal can display a warning message when a plug-
fan exceed the maximum permissible speed for a period of time
longer than 30 minutes (by default).
This safety can be confi gured as indication only (default) or unit
shutdown.
11.8. High or low indoor temperature safety
The control indicates an alarm event when the indoor temperature
(return or ambient) drops bellow 15ºC or exceeds 40ºC.
This alarm is timed at 30 minutes.
A01c
Compressor lock reset
for heating od the
cranckcase heater (8h)
NO 7h 59m 35s
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