Procedure to Remove Switch Box
Si281315E
4
Removal Procedure
3. Procedure to Remove Switch Box
Procedure
Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step
Procedure
Points
Remove the front panel
(2) according to the
procedure for removing
outside panels.
If the top panel cannot be
removed
Even though workability is
degraded, it is possible to pull
the switch box to the front
without removing the top panel.
The figure below shows
connectors to be
disconnected.
Precaution for mounting the
pressure thermistor
To prevent the lead wire from
hanging over the PCB, hook the
lead wire of 160 to 170 mm in
length from the front end of the
connector on the clamp.
1
Disconnect each
connector on the PCB.
(Refer to the Points
column.)
2
Remove the 2 faston
terminals. After that,
unscrew the 3 screws
that fix the reactor, and
then remove the
reactor.
3
Cut the cable tie.
4
Remove the clamp of
the pressure thermistor
lead wire.
5
Cut the cable tie of the
outdoor air thermistor.
6
Disconnect a set of lead
wires together from the
clamp.
7
Remove the terminal
cover, and then
disconnect the 3 lead
wires from the terminal
block for the
compressor.
8
9
Unscrew the 2 screws
that fix the terminal
block.
Disengage the 3 tabs,
and then pull out the
switch box upward.
A set of
lead wires
Screws fixing
the terminal
block
Screws fixing
the reactor
Cable tie
(outdoor air
thermistor)
Pressure
thermistor
lead wire
Cable tie
Terminal block for compressor
Upper fan
motor [X106A]
Lower fan
motor [X107A]
Electronic expansion
valve [X21A]
Outdoor air
thermistor [X11A]
Integrated thermistor
[X12A]
Liquid pipe
thermistor [X13A]
Pressure
thermistor [X17A]
Four way
valve [X25A]
Solenoid valve 1
[X26A]
Solenoid valve 2
[X27A]
Crankcase
heater [X28A]
