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4.3.4 Language selection
English is the language automatically selected, but it can be changed into: Italian, French, German, Spanish.
To modify the language, operate as follows:
1. Press the PROGRAM key, select the MAINTENANCE item and press ENTER
2. Press ENTER in the screen A0, and UP or DOWN to modify the language
3. Press ENTER to confirm the new language.
5 ALARMS
The alarms managed by the program safeguard soundness of the connected devices and provide signals in
case the control parameters have exceeded the normal values or the board is faulty. The alarms originate
from alarm digital inputs, probes or board. Their effect ranges from the simple block signalling of one or more
devices to the air-conditioning unit stop. Many alarms are subject to programmable delay times.
When an alarm state is identified, the following signals occur:
the red LED under button ALARM turns on
abbreviation AL starts blinking on the Menu screen
Pushing button Alarm, the buzzer switches off and the alarm screen is displayed. If more alarms are active,
the screen of the first alarm is displayed; the other alarms can be displayed by using the arrow buttons. If
other buttons are pressed, the alarm screens are left but they keep stored and are displayed again whenever
the Alarm button is pressed.
To rearm the alarms and delete the message manually, simply move the cursor on the alarm screens and
push button Alarm again; if the alarm causes have disappeared (digital inputs rearmed, temperature within
the normal values, etc…), the screens disappear, the red led switches off and message “NO
ALARM
ACTIVE” is displayed. If the cause of one or more alarms is still active, the disabled alarms only disappear,
whereas the other alarms keep displayed and the buzzer and the red led switch on again.
Alarms are divided into two categories: manually-rearmed alarms or automatically-rearmed alarms.
The manually-rearmed alarms require alarm screen deleting (as described above) to restart the devices or
the air-conditioning unit. The automatically-rearmed alarms unlock the device or restart the air-conditioning
unit after the cause has disappeared, but the alarm screen keeps stored in the memory.
5.1 Table of alarms
CODE
DESCRIPTION
DELAY
UNIT OFF
DISABLED
A01
Compressor 1 general alarm
-
-
Compressor 1
A02
Compressor 2 general alarm
-
-
Compressor 2
A03
Compressor 1 low pressure
see T2
-
Compressor 1
A04
Compressor 2 low pressure
see T2
-
Compressor 2
A05
No air flow
see T4
yes
All
A06
Outlet fan thermal
-
yes
All
A07
Heater 1 thermal
-
-
Heater 1
A08
Heater 2 thermal
-
-
Heater 2
A09
Fire / Smoke detection
-
yes
All
A10
Dirty filters
-
-
-
A11
High ambient temperature
see T2
-
-
A12
Low ambient temperature
see T2
-
-
A13
High ambient humidity
see T2
-
-
A14
Low ambient humidity
see T2
-
-
A15
Compressor 1 working hours threshold reached
-
-
-
A16
Compressor 2 working hours threshold reached
-
-
-
A17
Outlet fan working hours threshold reached
-
-
-
A18
Ambient temperature probe faulty or disconnected
60 sec (fixed)
-
-
A19
Recovery
water
temperature
probe
faulty
or
disconnected
60 sec (fixed)
-
-
A20
External air temperature probe faulty or disconnected
60 sec (fixed)
-
-
A21
Outlet air temperature probe faulty or disconnected
60 sec (fixed)
-
-
A22
Ambient humidity probe faulty or disconnected
60 sec (fixed)
-
-
A23
Condenser 1 pressure probe faulty or disconnected
60 sec (fixed)
-
-
A24
Condenser 2 pressure probe faulty or disconnected
60 sec (fixed)
-
-
A25
Condenser 1 temperature probe faulty or disconnected
60 sec (fixed)
-
-
A26
Condenser 2 temperature probe faulty or disconnected
60 sec (fixed)
-
-
A27
High humidifier current
-
-
Humidifier