48
Special functions
7.1.2 Error codes
Mod. 12/14/16 kW
Code Description
H0 M_Home not matching (reserved)
E0 EEPROM error
E2
Communication error between external chip
and internal chip
E3
Communication error between main board and
IR341
E4 Outdoor unit sensor error
E5 Voltage protection error
E6 DC fan error
E7 Error of the heating fan in area A for 5 minutes
E8
Two E6 errors in 10 minutes (the unit can be
reset when restarted)
P0 High temperature protection of the cooling fins
P1 High pressure protection
P2 Low pressure protection
P3 Compressor current protection
P4 Discharge temperature protection
P5
External condenser high temperature protec-
tion
P6 Protection of IPM modules
P7 Evaporator high temperature protection
P8 Wind protection
Mod. 8 / 10.5 / 18kW
Code Description
E2
Communication error between the indoor and
outdoor units
E4 Malfunction of temperature sensors T3 and T4
E5 Voltage protection
E6 Fan protection
E7
Compressor drain temperature sensor malfun-
ction
E9 EEPROM malfunction
EA
A fan in area A is activated for more than 5
minutes in heating mode
Eb
2 interventions of the E6 protection in 10
minutes
H0
Communication error between IR341 and main
board
P1 High pressure protection
P2 Low pressure protection
P3 Input current protection
P4 Compressor drain temperature protection
P5 Condenser high temperature protection
P6 Inverter module protection
P8 Wind protection
PE
Internal evaporator high temperature protec-
tion
L0 Module malfunction
L1 DC line low voltage protection
L2 DC line high voltage protection
Code Description
L3 Reserved
L4
MCE malfunction/simultaneous activation/cycli-
cal activation in loop
L5 Zero speed protection
L6 Reserved
L7 Phase error protection
L8
Protection for dierence > 15 Hz between front
and rear frequency
L9
Protection for dierence > 15 Hz between the
set speed and the actual speed
l
WARNING
If there are any error or protection codes,
contact your dealer for service and
maintenance.
7.1.3 Forced cooling command
2
3
SW1
SW2
Fig. 68
1
Main board (outdoor unit)
2
Forced cooling command button sw1
3
Button to control the operating values on the display sw2
By pressing the forced cooling button of the outdoor unit,
it is possible to forcibly activate the cooling function in the
indoor unit.
The frequency of the outdoor unit goes to 44 Hz and the
fan of the indoor unit operates at high speed. By pressing
the button again, forced cooling is deactivated.
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