Elektronika SCM60ZD-S Manual page 33

(10) Determining the operating mode
The cooling and heating operating modes are the remote control switch mode that have been previously determined.
If a mode differing from these is selected after this, the selected mode will appear in the display of the remote control, but only the
fan will operate.
First operation
Example
Selected Mode Remote Control Display
Cooling Cooling
1
2 Heating Heating
Example of operating pattern
Cooling
switch
A unit
ON
Heating
B unit
switch
ON
Operation Operation
(11) External control (remote display)/control of input signal
Make sure to connect the standard remote control unit. Control of input signal is not available without the standard remote control unit.
(a) External control (remote display) output
Following output connectors (CNT) are provided on the printed circuit board of indoor unit.
(i) Operation output: Power to engage DC 12V relay (provided by the customer) is outputted during operation.
(ii) Heating output: Power to engage DC 12V relay (provided by the customer) is outputted during the heating operation.
(iii) Compressor ON output: Power to engage DC 12V relay (provided by the customer) is outputted while the compres
sor is operating.
(iv) Error output: When any error occurs, the power to engage DC 12V relay (provided by the customer) is outputted.
(b) Control of input signal
Control of input signal (switch input, timer input) connectors (CNT) are provided on the control circuit board of the indoor
unit. However, when the operation of air conditioner is under the Center Mode, the remote control by CnT is invalid.
(i) If the factory settings (Jumper wire J1 EXTERNAL INPUT on the PCB) are set, or "LEVEL INPUT" is selected in the
wired remote control's indoor unit settings.
1) Input signal to CnT OFF → ON
2) Input signal to CnT ON → OFF
CnT Input
A Unit
B Unit
(ii) When Jumper wire J1 on the PCB of indoor unit is cut 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
A Unit
B Unit
Second operation
Operation Selected Mode Remote Control Display
Cooling Heating
Heating Cooling
Cooling
Cooling
Fan
switch
ON
Operation Operation
Air conditioner ON
Air conditioner OFF
ON
OFF
ON
OFF
*ON
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
Notes
Operation
(1)
Heating Fan
• Different mode is
only fan operation.
Cooling Fan
Heating
Fan Heating
switch
ON
Heating
Cooling
switch
Operation
ON
OFF
OFF
*ON
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
Note (1) If the display shows
heating and the opera-
tion is fan, Hot Keep
will operate.
Heating
ON
Note (1) [ ] indicates currect operation.
Note (1) The ON with the * mark indicates
an ON operation using the remote
control unit switch, etc.
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