Connector Description
Compressor capacitor Compressor capacitor
Power supply Electrical power supply
E-Heater Electrical back-up
OFF-PEAK Off-peak rate signal
N Neutral
L Live
Earth
CT1 Current transformer
CT2 Differential current transformer
4–WAY VALVE 4-way valve
COM1 Control panel bus
LOW SPEED Low fan speed
HIGH SPEED High fan speed
RT5L Domestic hot water tank temperature sensor
RT3 Exchanger temperature sensor
RT4 Outside air temperature sensor
RTh Air suction temperature sensor
RTp Air discharge temperature sensor
A - B - E – P - Q OFF-PEAK terminal block connectors
PRO_P High-pressure pressure switch
Compressor outside overload
protection
Compressor outside overload protection
S1 Selector
SW1 Switch
Tab.16 Switches
Switch OFF ON
S1 - 1 - -
S1 - 2 Anti-legionella mode disabled Anti-legionella mode enabled
S1 - 3 Temperature in anti-legionella mode 65°C Temperature in anti-legionella mode 70°C
Tab.17 Colour code
Colour Description Colour Description Colour Description Colour Description
Black Black Brown Brown Orange Orange White White
Blue Blue Grey Grey Red Red Yellow/
Green
Yellow/Green
3 Technical specifications
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