Mitsubishi Electric PUHZ-P200YKA3 Service Manual page 96

OPERATING PROCEDURE
3. Removing the electrical parts box
(1) R emove the service panel. (See Photo 1)
(2) R emove the top panel. (See Photo 1)
(3) D isconnect the power supply cable from terminal block.
(4) D isconnect the indoor/outdoor connecting wire from ter-
minal block.
(5) D isconnect the connector CNF1 (WHT), CNF2 (WHT),
TH3 (WHT), TH7/ 6 (RED), TH32 (BLK), 63H(YLW),
21S4 (GRN), LEV-A (WHT) from the controller circuit
board.
<Symbols on the board>
• Fan motor (CNF1, CNF2)
• Thermistor <Liquid> (TH3)
• Thermistor <Ambient/ 2-Phase Pipe> (TH7/6)
• Thermistor <Comp. Surface> (TH32)
• High pressure switch (63H)
• 4-way valve (21S4)
• LEV (LEV-A)
(6) L oosen the clamps, fasteners and cable strap for the
lead wire in the electrical parts box and separator.
(7) L oosen the lead wires fixed to the pipes with bands.
(8) T o disconnect the COMP lead wire, remove the terminal
cover, then remove the COMP lead wire fixing screws (4
for front/ 5 x 12).
(9) R emove the electrical parts box fixing screws (2 for front/
4 x 10), then slide the electrical parts box upward to
remove it.
(The electrical parts box is fixed to the side panel (R) with
a hook on the right side, and to the separator duct with a
hook on the left side.)
OCH679
PHOTOS/FIGURES
Photo 4
Controller
circuit board
Terminal block
(Power supply)
Valve bed
Valve bed
fixing screw
Terminal cover
Compressor
96
Electrical parts box
Electrical parts
box fixing screws
Terminal block
(Indoor/Outdoor)
Side panel (R)
Valve bed
fixing screws