Mitsubishi Heavy Industries SC-BIKN-E, Technical Manual, Page: 19 / 20

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17
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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 indicates an
ON operation using the remote control
unit switch, etc.
(b) Pulse input
When DIP switch SW2-1 on the PCB of interface kit is OFF at the field or “PULSE INPUT” is selected in the wired remote
control’s indoor unit settings.
Input signal to CnT becomes valid at OFF
→
ON only and the motion of air conditioner [ON/OFF] is inverted.
CnT Input
Unit
(CASE A)
Unit
(CASE B)
OFF
OFF
ON
ON
OFF
ON
OFF
ON
ON
OFF
OFF
*ON
12. External control (remote display)/control of input signal
(1) External control (remote display) output
Following output connectors (CnT) are provided on the printed circuit board of interface kit.
• Operation output: Power to engage DC 12V relay (provided by the customer) is outputted during operation.
• Heating output: Power to engage DC 12V relay (provided by the customer) is outputted during the heating operation.
• Compressor OPERATION output:
Power to engage DC 12V relay (provided by the customer) is outputted while the com-
pressor is operating.
• MALFUNCTION output:
When any error occurs, the power to engage DC 12V relay (provided by the customer) is outputted.
(2) Control of input signal
Control of input signal (switch input, timer input) connectors (CnT) are provided on the control circuit board of interface kit.
However, when the operation of air conditioner is under the Center Mode, the remote control by CnT is invalid.
(a) Level input
If the factory settings (DIP switch SW2-1 EXTERNAL INPUT on the PCB of interface kit) are set, or “LEVEL INPUT” is
selected 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