PHOTOS
OPERATION PROCEDURE
23
23
Photo 3
Indoor controller board (I.B)
4. REMOVING THE ELECTRICAL BOX
(1) Remove the front panel. (Refer to procedure 2)
(2) Remove the electrical box covers. (See Photo 3)
(3) Remove the nozzle assembly. (Refer to procedure 5)
(4) Disconnect the transmission wiring of TB5.
(5) Disconnect the power supply wiring of TB2.
(6) Disconnect the wiring of MA-remote controller (TB15).
(7) Disconnect the connectors on the indoor controller board.
(8) Disconnect the connector for the ground wire. (See Photo 5)
(9) Pull the disconnected lead wire out from the electrical box.
(10) Remove the screw of electrical box. (See Photo 6)
(11) Push up the upper fixture (See Photo 5) catch to remove
the box, then pull the right fixture (See Photo 4) and
remove it from the box fixture.
Fixture
(upper)
Terminal
block (TB2)
Photo 4
Photo 5
Fixture
(right)
Connector for
ground wire
Photo 6
Screw (Electrical box)
Room temp. thermistor (TH21)
Fixture
(right)
Terminal
block (TB5)
Terminal
block (TB15)
3. REMOVING THE INDOOR CONTROLLER BOARD
AND WIRELESS CONTROLLER BOARD
(1) Remove the front panel. (Refer to procedure 2)
(2) Remove the electrical box covers (screw 4 × 12).
(See Photo 3)
(3) Remove the thermistor holder from the electrical box side
cover. (See Photo 3)
(4) Disconnect the connectors on the indoor controller board.
(5) Remove the switch board cover.
(6) Pull out the indoor controller board toward you, then
disconnect the rest of connectors.
Remove the indoor controller board and switch board.
(7) Remove the holder of wireless controller board.
(8) Disconnect the connector of wireless controller board and
remove the wireless controller board from the holder.
Electrical box
cover (top)
Electrical box
cover (side)
Screw (side cover)
Holder of wireless
controller board
Screw
(side cover)
Switch holder
Nozzle assembly
Screw (top cover)
Room temp.
thermistor
(TH21)
Thermistor
holder
Water cover
OCH515
