Mitsubishi Electric SUZ-KA24NAHZ Service Manual page 94

OPERATING PROCEDURE
3. Removing the electrical parts box
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Disconnect the indoor/outdoor connecting wire and the
power supply wire from terminal block.
(4) Disconnect the connector CNF1, CNF2, SV2, LEV-A,
LEV-B and LEV-C on the controller circuit board.
<Symbols on the board>
• CNF1, CNF2: Fan motor
• LEV-A, LEV-B, LEV-C: LEV
• SV2: Base Heater
(5) Disconnect the pipe-side connections of the following parts.
• Thermistor <Liquid>(TH3)
• Thermistor <Discharge>(TH4)
• Thermistor <2-phase pipe>(TH6)
• Thermistor <Ambient>(TH7)
• Thermistor <Suction> (TH32)
• Thermistor <Comp. surface> (TH33)
• High pressure switch (63H)
• 4-way valve coil (21S4)
(6) Remove the terminal cover and disconnect the compressor
lead wire.
(7) Loosen the clamp for lead wires on the separator.
(8) Remove 2 electrical parts box fixing screws (4 × 10) and
detach the electrical parts box by pulling it upward.
The electrical parts box is fixed with 2 hooks on the left
and 1 hook on the right.
OCH754A
PHOTOS/FIGURES
Photo 4
Controller circuit board (C.B.)
94
Electrical
parts box
Electrical
parts box
fixing screw
Terminal block
(TB2)
Terminal block
(TB1)
Valve bed
Terminal cover
Compressor
(MC)