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Si21-205
FFQ25/35/50/60BV1B
Removal Procedure
237
1.6
Removal of Switch Box
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step
Procedure
Points
Remove decoration panel
first.
1
Remove the lid of
switch box.
(Two pieces of M4
screws)
2
Disconnect the
connection wires for
outdoor units and earth
wire. At this time, cut
the tie wrap fixing the
connection wires.
Disconnect wire of
remote controller also.
At this time, cut the tie
wrap fixing the wire of
remote controller.
3
Remove five pieces of
lead wires from PCB on
the switch box and lead
wire connected to the
capacitor for fan motor.
(Refer to the list shown
in the right.)
4
Cut tie wraps fixing lead
wires of float switch,
thermistor for heating
and liquid pipe
thermistor.
5
Remove two fixing
screws located at both
ends of switch box and
one screw inside the
box.
6
Remove the switch box.
∗
Five pieces lead wires shown below (connect to the PCB) and
lead wire connected to the capacitor for fan motor.
X15A······Lead wire of float switch
X17A······Lead wire of thermistor for heating
X18A······Lead wire of liquid pipe thermistor
X20A······Lead wire of fan motor
X25A······Lead wire of drain pump
(S2763)
(S2650)
(S2651)
Fixing
screw
(M4×12)
Fixing
screw
(M5×12)
Fixing screw
(M4×12)
Wires for remote controller
Tie wrap
Tie wrap
Outdoor unit
connection wire
and earth wire
Outdoor unit
connection
wire terminal
P1 P2 F1 F2
X17A
X18A
X25A
X20A
Capacitor
for fan
X15A
Summary of Contents for Sky Air B-Series R-410A
Page 7: ...Si21 205 vi Table of Contents ...
Page 15: ...Models Si21 205 4 Model Name and Power Supply ...
Page 16: ...Si21 205 Functions 5 Part 2 Functions 1 List of Functions 6 ...
Page 35: ...Wireless Remote Controller Si21 205 24 Remote Controller ...
Page 79: ...Settings Concerning Maintenance Si21 205 68 Field Setting Detail of PCB 2 ...
Page 83: ...Maintenance Mode Setting Si21 205 72 Field Setting ...
Page 239: ...Troubleshooting for Outdoor Unit 50 60 class Si21 205 228 Troubleshooting ...
Page 321: ...Outdoor Unit 50 60 class Si21 205 310 Removal Procedure ...