Removing The Fan Motor (Mf1, Mf2) - Mitsubishi Electric PUHZ-P100VHA2 Service Manual

PUHZ-P125/140VHA2.UK
PUHZ-P125/140VHA3.UK
PUHZ-P125/140VHA3R2.UK
PUHZ-P125/140YHA.UK
OPERATING PROCEDURE
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5 × 12) and slide
the hook on the right downward to remove the service
panel.
(2) Remove screws (2 for front, 3 for rear/5 × 12) of the top
panel and remove it.

2. Removing the fan motor (MF1, MF2)

(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Remove 10 fan grille fixing screws (5 × 12) to detach the
fan grille. (Top and bottom) (See Figure 1)
(4) Remove a nut (for right handed screw of M6) to detach the
propeller. (Top and bottom) (See Photo 1)
(5) Disconnect the connectors, CNF1, CNF2 on controller cir-
cuit board in control box.
(6) Loosen 6 clamps on the separator and motor support, then
unbind the lead wires.
(7) Remove 8 fan motor fixing screws (5 × 20) to detach the
fan motor. (Top and bottom) (See Photo 2)
3. Removing the control box
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Disconnect the indoor/outdoor connecting wire and the
power supply wire from the terminal block.
(4) Disconnect the connector CNF1, CNF2 and LEV-A on the
controller circuit board.
<Symbols on the board>
• CNF1, CNF2 : Fan motor
• LEV-A : LEV
(5) Disconnect the pipe-side connections of the following parts.
• Thermistor <Outdoor pipe> (TH3)
• Thermistor <Discharge> (TH4) (VHA2
• Thermistor <Comp.Surface> (TH32) (VHA3R2,
VHA3R3, YHA(R1/R2))
• Thermistor <Outdoor 2-phase pipe, Ambient>,
<Outdoor 2-phase pipe, Outdoor> (TH6/7)
• High pressure switch (63H)
• 4-way valve coil (21S4)
• Bypass valve (SV2)
• Crankcase heater (SV1/CH)
(6) Remove the terminal cover and disconnect the compressor
lead wire.
(7) Loosen 2 clamps on the separator and unbind the lead
wires.
(8) Remove 2 control box fixing screws (4 × 10) and detach
the control box by pulling it upward. The control box is
fixed with 2 hooks on the left and 1 hook on the right.
OCH415G
PUHZ-P125/140VHA2
PUHZ-P125/140VHA3R1.UK
PUHZ-P125/140VHA3R3.UK
PUHZ-P125/140YHAR1.UK
Nut
, VHA3(R1))
(1)
134
.UK
1
PUHZ-P125/140YHAR2.UK
PHOTOS & ILLUSTRATION
Figure 1
Top panel fixing screws
Grille
fixing
screws
Grille
fixing
screws
Photo 1 Photo 2
Front panel
Propeller
Fan motor fixing screws
Photo 3 (PUHZ-P125, 140V)
Terminal block (TB1)
Top panel
Service panel
Slide
Fan grille
Service panel
fixing screws
Fan
motor
Fan motor fixing screws
Controller circuit
board (C.B.)
Control box
fixing screws
Continued to the next page.