Mitsubishi Electric Mr.SLIM PUHZ-RP1.6VHA Technical & Service Manual page 101

PUHZ-RP4YHA PUHZ-RP5YHA PUHZ-RP6YHA
OPERATING PROCEDURE
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5
the hook on the right downward to remove the service
panel.
(2) Remove screws (3 for front, 3 for rear/5
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 5 fan grille fixing screws (5
fan grille. (See figure 1.)
(4) Remove a nut (for right handed screw of M6) to detach
the propeller. (See photo 1.)
(5) Disconnect the connectors, CNF1 and CNF2 on controller
circuit board in electrical parts box.
(6) Remove 4 fan motor fixing screws (5
fan motor. (See photo 2.)
3. Removing the electrical parts box
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Disconnect the indoor/outdoor connecting wire from
terminal block.
(4) Disconnect the connector CNF1, CNF2, LEV-A and LEV-B
on the controller circuit board.
<Symbols on the board>
• CNF1, CNF2 : Fan motor
• LEV-A, LEV-B : Linear expansion valve
(5) Disconnect the pipe-side connections of the following parts.
• Thermistor <Outdoor pipe>(TH3)
• Thermistor <Discharge>(TH4)
• Thermistor <Outdoor 2-phase pipe>(TH6)
• Thermistor <Outdoor>(TH7)
• High pressure switch (63H)
• Low pressure switch (63L)
• Solenoid valve coil <Four-Way Valve>(21S4)
• Solenoid valve coil <Bypass Valve>(SV)
Figure 1
10) and slide
Grille
10) of the top
fixing
screws
Grille
fixing
screws
Photo 1
10) to detach the
Nut
25) to detach the
Photo 3
Front panel
101
PHOTOS & ILLUSTRATION
Top panel fixing screws
Slide
Photo 2
Front panel
Propeller Fan motor fixing screws
Fan motor fixing screws
Screw8
Controller circuit
board (C.B.)
Cover panel fixing screws
Screw9
Continued to the next page.
Top panel
Service panel
Fan grille
Service panel
fixing screws
Fan
motor
Electrical
parts box
Noise filter
circuit
board (N.F.)
Terminal
block (TB1)
Terminal
block (TB2)
Valve bed
Motor for
compressor
(MC)
Terminal
cover
Cover panel
(Front)