Toshiba MMU-UP0071MH-UL Service Manual page 146

No. Part name
1. Detachment
Heat
exchanger
1) Recover refrigerant, and then remove refrigerant pipes
at indoor unit side.
2) Perform the procedure in steps 1-1), 1-2), 1-3) of
"
Drain pan."
3) Disconnect the following connector of the control P.C.
board.
NOTE
Unlock the lock of the housing to disconnect the
connectors.
CN82 ..... PMV (6P: White)
4) Remove the TC1, TC2, and TCJ sensors from the heat
exchanger, and then detach the binding bands used
for fixing cables, such as the sensor cables, PMV
cable, and drain pump cable.
5) Remove the screws of the pipe cover. Next lift up the
pipe cover and disengage the cover from the hooking
parts to remove it.
(M4 × 0.39" (10mm) 2 pcs)
6) Remove the screws of the side cover to which the
drain pump is attached, and slightly pull out the side
cover.
(M4 × 0.39" (10mm) 2 pcs)
7) Remove the screws of the heat exchanger fixed plate
(U pipe side), which are used for fixing the end plate
of heat exchanger.
(M4 × 0.39" (10mm) 2 pcs)
8) Remove the screws of the heat exchanger fixed plate
(pipe side) and detach the plate (pipe side).
(M4 × 0.39" (10mm) 3 pcs)
NOTE
• One screw (1 location) is concealed by the drain pump.
Shift the drain pump slightly in order to remove the
screw.
• If it is difficult to remove the screws on the U pipe side,
remove the under panel.
• When removing the top side screw on the U pipe side,
use a longish screwdriver as necessary. Also, when
removing the upper side screw, use a shortish
screwdriver.
9) Detach the heat exchanger.
2. Attachment
1) Restore the components and cables to their original
conditions and fix them in the following order: Sensors
→ Heat exchanger → Heat exchanger fixed plate
(pipe side) → Heat exchanger fixed plate (Use the
screws to fix the plate to the U pipe side.) → Pipe
cover → Side cover → Drain pump → Under panel
2) Connect the refrigerant pipe as before, and then
perform vacuuming.
Procedure
Electric parts box cover" and 1 of " Under panel,
Heat exchanger fixed
plate (pipe side) screws
– 146 –
Remarks
Sensors
Binding band
Pipe cover
Hooking part
Screws
Heat exchanger
Heat exchanger fixed plate
(pipe side)
Heat exchanger fixed plate
(U pipe side)
Move the drain pump slightly.
Top side
screw
Under side
screw
Locations of
Heat exchanger
screws as viewed
fixed plate
from the air
(U pipe side)
outlet side
screws