Output For External Control (Remote Display) - Mitsubishi Heavy Industries KXZ Series Service Manual

(a) Output for external control (remote display)
Following output connectors (CnT) are provided on the indoor control PCB for monitoring operation status.
① Operation output: Outputs DCV signal for driving relay during operation
② Heating output: Outputs DCV signal for driving relay during heating operation
③ Thermostat ON output: Outputs DCV signal for driving relay when compressor is operating.
④ Error output: Outputs DCV signal for driving relay when anomalous condition occurs.
(b) Remote operation input
Remote operation input connector (CnT- or CnTA) is provided on the indoor control PCB.
However remote operation by CnT- or CnTA is not effective, when "Center mode" is selected by central control.
In case of plural unit (twin, triple, double twin), remote operation input to CnT- or CnTA on the slave indoor unit is
invalid.
Only the "LEVEL INPUT" is acceptable for external input, however when the indoor function setting of "Level
input (Factory default)" or "Pulse input" is selected by the function for "External input" of the wired remote control,
operation status will be changed as follows.
(i) In case of "Level input" setting (Factory default)
Input signal to CnT-6 or CnTA is OFF→ON ...... unit ON
Input signal to CnT-6 or CnTA is ON→OFF ...... unit OFF
Operation is not inverted.
CnT-6 or CnTA input
CnT-6 or CnTA input
Unit A
Unit A
Unit B
Unit B
Note: The latest operation has priority
It is available to operate/stop by remote control or central control
(ii) In case of "Pulse input" setting (Local setting)
It is effective only when the input signal to CnT-6 or CnTA is changed OFF→ON, and at that time unit operation [ON/
OFF] is inverted.
CnT-6 or CnTA input
CnT-6 or CnTA input
Unit A
Unit A
Unit B
Unit B
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
Remote
Remote
control OFF
control OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF OFF
Remote Remote
Remote
control OFF control ON
control OFF

– –
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
Remote
Remote
control ON
control ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
Remote
control ON
'14 • KX-SM-221