Hitachi P-AP56NAM, Service Manual

Page: 348 / 382

9 Servicing
RPF(I)-(1.0-2.5)FSN2E - Floor and Floor concealed type
SMGB0099 rev.0 - 12/2016 334
9.10.6 Removal of the printed circuit board (PCB)
1 Remove the air inlet grille as indicated in section “9.10.1 Removal
of the air inlet grille” .
2 Remove the air filter as indicated in section “9.10.2 Removal of
the air filter” .
3 Remove the front panel as indicated in section “9.10.4 Removal
of the front panel” .
4 Remove the side panel, removing the 3 set screws and pulling
the panel downwards.
5 Remove the panel from the electrical box after removing the four
set screws.
6 Remove the 2 set screws from the electrical box and release the
attachment from the top of the box. Turn the electrical box at a
90° angle.
Electrical box
panel
Screw
7 Press the four attachment points of the PCB using long-tipped
pliers and placing a finger next to the hole in the PCB before
removing the PCB.
Rear side of
the unit
Front side of
the unit
!
C A U T I O N
• Do not touch the electrical components of the PCB.
• Do not apply force to the PCB, as this could damage it.
• Pay special attention to the position of the connectors on the PCB. An incorrect position during installation may damage the PCB.
9.10.7 Removal of the thermistors from the liquid and gas piping
1 Remove the air inlet grille as indicated in section “9.10.1 Removal
of the air inlet grille” .
2 Remove the air filter as indicated in section
“9.10.2 Removal of
the air filter”
.
3 Remove the front panel as indicated in section “9.10.4 Removal
of the front panel” .
4 Remove the side panel, removing the 3 set screws and pulling
the panel downwards.
5 Disconnect the wiring from the thermistor and remove the
thermistor.
Side panel