(b) In the case of CnT input ON (Operation permission)
(i) The air-conditioner can be operated or stopped by the wired remote control signal.
(When the "CENTER" mode is set, the operation can be controlled only by the center input.)
(ii) When the CnT input is changed from OFF to ON, the air-conditioner operation mode is changed depending on the
status of the jumper wire (J1) on the indoor control board.
(c) In the case of CnT input OFF (Operation prohibition)
(i)
Air-conditioner is unable to control the operation/stop, ect. in accordance with signals from the wired remote control signal
wire.
(ii) Air-conditioner stops as it changes CnT input ON
→
OFF.
When the jumper wire (J1) is short circuited
The signal (a) above starts the air-conditioner.
(Shipping status)
When the jumper wire (J1) is released
When the CnT input is set to ON, the air-condition-
er starts operation. After that, the operation of the
air-conditioner depends on (a) above. (Local status)
(a) External control (remote display) output
Following output connectors (CnT) are provided on the printed circuit board of indoor unit.
Note (1) Please install the separately-sold interface kit (SC-BIKN-E). The output connector (CnT) is located on the circuit board of the interface kit.
• Operation output:
Power to engage DC12V relay (provided by the customer) is outputted during operation.
• Heating output:
Power to engage DC12V relay (provided by the customer) is outputted during the heating operation.
• Compressor OPERATION output:
Power to engage DC12V relay (provided by the customer) is outputted while the
compressor is operating.
• MALFUNCTION output:
When any error occurs, the power to engage DC12V relay (provided by the customer) is outputted.
(18) External control (remote display) /control of input signal
(b) Control of input signal
Control of input signal (switch input, timer input) connectors (CnT) are provided on the printed circuit board of indoor unit.
However, when the operation of air-conditioner is under the
“
CENTER
”
mode, the wired remote control by CnT is invalid.
CnT input
Unit
(Case A)
Unit
(Case B)
OFF
OFF
*ON
ON
ON
ON
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
Note (1) The ON with the * mark indi-
cates an ON operation using the
wired remote control, etc.
*ON
(i) Level input
If the factory settings (Jumper wire J1 external input on the PCB of indoor unit) are set, or “LEVEL INPUT” is se-
lected in the wired remote control’s indoor unit settings.
1) Input signal to CnT OFF
→
ON Air-conditioner ON
2) Input signal to CnT ON
→
OFF Air-conditioner OFF
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147
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'16 • SCM-T-199
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