In two-zone operation (tandem, sensors Ry.1 have an effect on relay 1 and Ry.2 on relay 2.
R4.1: Refrigerant temperature sensor (terminals Z21/22)
R5.1: Evaporator input sensor (terminals Z41/42)
R6.1:Evaporator output sensor (terminals Z51/52)
R4.2: Refrigerant temperature sensor (terminals Z71/72)
R5.2: Evaporator input sensor (terminals Z91/92)
R6.2:Evaporator output sensor (terminals Z01/02)
E-valve 1: Relay for expansion valve 1 (terminals 23/24)
E-valve 2: Relay for expansion valve 2 (terminals 33/34)
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