101
OPERATING PROCEDURE
PHOTOS & ILLUSTRATION
PUHZ-RP4YHA PUHZ-RP5YHA PUHZ-RP6YHA
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5
✕
10) and slide
the hook on the right downward to remove the service
panel.
(2) Remove screws (3 for front, 3 for rear/5
✕
10) of the top
panel and remove it.
Figure 1
Top panel fixing screws
Top panel
Service panel
fixing screws
Service panel
Grille
fixing
screws
Fan grille
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
✕
10) to detach the
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
✕
25) to detach the
fan motor. (See photo 2.)
Fan motor fixing screws
Photo 3
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)
Electrical
parts box
Noise filter
circuit
board (N.F.)
Terminal
cover
Cover panel fixing screws
Motor for
compressor
(MC)
Photo 1
Fan
motor
Fan motor fixing screws
Propeller
Front panel
Nut
Photo 2
Valve bed
Screw
9
Grille
fixing
screws
Slide
Terminal
block (TB2)
Screw
8
Front panel
Continued to the next page.
Controller circuit
board (C.B.)
Terminal
block (TB1)
Cover panel
(Front)
OC294-D-4.qxp 05.3.9 11:06 AM Page 101