Replacing Pcb1 For Control - Hitachi RCI-1.0FSN3 Service Manual

10 Servicing

10.9.6 Replacing PCB1 for Control

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For RPK-(0.8-1.5)FSN(H)3M
a. Remove the electrical box according to the "Removing Electrical Box." chapter.
N O T E
If there is enough service space to the right side of the electrical box, PCB1 can be replaced without removing the electrical
box.
b. Remove 1 screw fixing the terminal board cover to remove it.
c. Remove 1 screw fixing the electrical box cover located to the right side of the electrical box. Then remove the
electrical box cover.
d. Remove the wirings and connectors (on the PCB1) for the freeze protection thermistor, gas pipe thermistor, inlet
air thermistor, outlet air thermistor, transmission, remote control switch, power source, external input/output, auto-
louver, PCB for receiver (with indicator), fan motor and expansion valve coil.
Screw for
Electrical Box Cover
e. Remove 2 spacers in the direction of the arrow (A) and also remove PCB1 in the direction of the arrow (B).
f. After the replacement, attach them in the reverse procedure.
N O T E
If the unit with the expansion valve kit is used, regard "expansion valve coil" as "expansion valve relay cord."
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For RPK-(2.0-4.0)FSN(H)3M
a. Remove the front panel according to the "Removing Front Panel" chater.
370
SMGB0077 rev.0 - 01/2013
Screw for
Terminal Board Cover
Screw for
Switch Cover
Electrical Box
Specers
(A)
(A)
(B)
Electrical Box Cover
Screw for
Electrical Box Cover