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MAC9611041C2
CS-MC90KE
Servicing Information
● By adding a jumper wire to the remote control side and a carbon resistor (1/4 W, 10 kΩ) to the indoor printed
circuit board, it is possible to select 4 types of transmission codes including one at time of delivery condition
(1).
Remote control
1
2
3
4
Switch SW B ↔ A
A
B
A
B
J – B
Jumper wire
Jumper wire
Indoor printed circuit board
Switch SW1
A
B
A
B
RX
10kΩ
10kΩ
Note
At product delivery
• Auto/Manual control switch for solenoid control
valve
1. AUTO operation
When the AUTO/MANUAL control switch is turned to
the “AUTO” position, the normal operation of solenoid
control valve will be performed. (The open and close of
the solenoid controlled valve is depend on the controller.)
2. MANUAL operation
When the AUTO/MANUAL control switch is turned to
the “MANUAL” position, the solenoid controlled valve
for boths indoor unit A1 & A2 are opened compulsory.
(The signal from indoor unit is ignored). And the
compressor & outdoor fan motor are also stopped
compulsory.
• Remote Control Reset
When the batteries are inserted for the first time, or
the batteries are replaced, all the indications will
blink and the remote control might not work.
If this happens, remove the back cover of the remote
control and you will find a resetting terminal, and by
shorting it with a minus screwdriver, it will return to
normal.
• Changing the wireless remote control
transmission code
When two indoor units are installed in the same
room, in order to prevent operating errors caused by
using two remote controls, set up the remote control
[B ↔ A] switch (SW1).
The unit is set to A when it is shipped.
SW1
A B
SW1
Remote Control
Remote Controller
B
A
B
A
Switch
Reset terminal
Untitled-27 6/25/00, 5:34 PM39
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