64
Open the casing door: See chapter "Removing the
heat pump module" on page 13.
Overview of electrical components
F
E
D
C
A
G
H
L
M
N
K
B
Fig. 42
A
Inverter
B
EEV PCB (refrigerant circuit controller)
C
Main PCB (MB 761)
D
Controller and sensor PCB (CU 401)
E
Luster terminals: Connections N and
F
Strain relief fittings
G
Luster terminals: Message and safety connections
H
Mains terminals for instantaneous heating water
heater (left) and compressor (right)
K
Heat pump control unit power supply
L
Expansion PCB (SA 135) on main PCB
M
Mains filter, inverter
N
Switching module for instantaneous heating water
heater
Maintenance
Opening the casing door
6153640
Service
