Disassembly Instructions - Mitsubishi Electric MUFZ-KJ-NAHZ Series Service Manual

10

DISASSEMBLY INSTRUCTIONS

<"Terminal with locking mechanism" Detaching points>
The terminal which has the locking mechanism can be detached as shown below.
There are 2 types (refer to (1) and (2)) of the terminal with locking mechanism.
The terminal without locking mechanism can be detached by pulling it out.
Check the shape of the terminal before detaching.
(1) Slide the sleeve and check if there is a locking lever or not.
Sleeve
Locking lever
10-1. MFZ-KJ09NA MFZ-KJ12NA MFZ-KJ15NA MFZ-KJ18NA
OPERATING PROCEDURE
1. Removing the panel
(1) Push down the tabs on the both sides of the unit.
(2) Open the front panel toward you and pull it out
upwards.
(3) Remove the screws of the panel.
(4) Open the horizontal vane (back) and push the
marks on the top of the panel, and pull the panel
toward you.
(5) Lift up the panel and remove it from the unit.
2. Removing the electrical box
(1) Remove the panel. (Refer to 1.)
(2) Remove the screw of the V.A. clamp cover and
remove the V.A. clamp cover.
(3) Remove the screw of the electrical cover and remove
the electrical cover.
(4) Remove the screw of the indoor/outdoor connecting
wire, and then the indoor/outdoor connecting wire.
(5) Remove the screws of the conduit box, and remove
the conduit box.
(6) Remove the earth wire connected to the indoor heat
exchanger. (Photo 4)
(7) Remove the screw of the electrical box. (Photo 5)
(8) Disconnect the following connectors on the electronic
control P.C. board.
• Fan motor connector < CN211> (Photo 5)
• Indoor coil thermistor connector < CN112> (Photo 5)
(9) Rotate the display receiver P.C. board holder to the
right side and disconnect the vane motor relay con-
nector. (Photo 6)
(10) Disengage the electrical box from the upper catch
and pull out the electrical box from the box.
(2) The terminal with this connector has the
Slide the sleeve.
Pull the terminal while
pushing the locking
lever.
NOTE: Turn OFF the power supply before disassembly.
Photo 1
Photo 2
Screw of the
panel
Photo 3
36
locking mechanism.
Hold the sleeve, and
pull out the terminal
slowly.
Connector
PHOTOS
Tabs of the unit
Push the marks.
Screw of the
electrical cover
Screw of the
V.A. clamp cover
Conduit box
Screws of the
conduit box
Screw of the
panel