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ENGLISH
Allarme #4
A4
Outside air sensor faulty
Allarme #5
A5
Plate exchanger frost-protection
Allarme #6
A6
Flow switch alarm
Allarme #7
A7
Communication error with external unit
Allarme #8
A8
Anti-legionella cycle not performed
Allarme #9
A9
RS485 serial port communication error
Allarme #10
A10
Overcurrent protection (external unit alarm **)
Allarme #11
A11
Power voltage protection (external unit alarm **)
Allarme #12
A12
Wrong external unit phases sequence (external unit alarm **)
Allarme #13
A13
External unit sensors faulty (external unit alarm **)
** Check alarm type on external unit board sect. 3.9.2
When an alarm activates, check the cause in table 6 and remove the fault or call technical support.
To remove alarms A1 to A13, press ey8 for ten seconds or call technical support.
The control can also activate two pump maintenance and water lter alarms. Parameter P d sets the number of running days
before the activation of the pump alarm, and parameter UF sets the number of running days before the activation of the lter
alarm.
Alarms can be activated by setting the relative parameter from 1 to 999 days, if 0 the counter is not activated.
When the alarm activates, and the machine has run for the set number of days, the display shows FiL for lter and P P for pump,
the parameter is set and the LED
switches on.
To deactivate the FiL alarm for the lter and P P for the pump, press E 2
for ten seconds until the alarm clears.
3.9.2
Alarms on e
[
ternal unit display
The external unit control board has a two-digit display that shows any active alarms.
The table below shows the external unit alarms.
Error code
Alarm Description
E0
EEPROM malfunction
E2
Communication error between external unit and internal unit
E3
External board communication error
E4
External unit temperature sensor faulty
E5
Compressor power voltage protection
E6
PFC module protection (only for 36 48 with 1 phase)
P0
Compressor head temperature protection
P1
High pressure protection
P2
Low pressure protection
P3
Compressor overcurrent protection
P4
Compressor ow temperature protection
P5
Condensation high temperature protection
P6
Module protection
3
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