163
Danger
Contact with live components can lead to seri-
ous injury from electric current. Some compo-
nents on PCBs remain live even after the power
supply has been switched off.
■
Never touch electrical terminal areas.
■
When working on the indoor or outdoor unit,
isolate the system from the power supply, e.g.
at a separate fuse or a main switch. Check
that it is no longer live. Safeguard against
unauthorised reconnection.
■
Prior to working on the appliance, wait at
least 4 min until the voltage has completely
dropped out.
Danger
The absence of system component earthing can
lead to serious injury from electrical current and
component damage in the event of an electrical
fault.
All earth conductor connections must be recon-
nected.
The appliance and pipework must be connected
to the equipotential bonding of the building.
Outdoor unit with 1 fan
Fig. 112
A
CAN bus terminal
B
Choke coil
C
Terminal strip, 230 V~ function components
D
Fan terminal with fuse
6.3 A H (slow), 250 V~
E
Electronics terminal with fuse
6.3 A H (slow), 250 V~
F
Chokes
G
VCMU refrigerant circuit controller
H
Solenoid coil, 4-way diverter valve
K
Ferrite
L
Inverter
M
Interference suppression filter
N
Mains terminal 230 V~
Outdoor unit maintenance
Overview of electrical components
6222080
Maintenance
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