Mark HCNI 533, Technical Manual

Page: 42 / 84

42
7.2.2 Electrical parts
Removing the PCB
WARNING
: Antistatic gloves must be worn when you disassemble the electronic box.
Note: Remove the air outlet grille before disassembling electrical parts.
Procedure Illustration
1) Remove the screws of the top
cover (2 screws).
2) Unfix the hooks and then open
the electronic control box cover (4
hooks).
3) Disconnect the connector for
fan motor from the electronic con-
trol board.
Compressor
T3, T4, TP
Electronic Expansion Valve
4-Way Valve
DC Fan
AC Fan
4) Remove the connector for the
compressor.
5) Pull out the two blue wires con-
nected with the four way valve.
6) Pull out connectors of the con-
denser coil temperature sensor
(T3), outdoor ambient tempera-
ture sensor (T4) and discharge
temperature sensor (TP).
7) Disconnect the electronic ex-
pansion valve wire.
8) Then remove the electronic
control board.