Fujitsu Cassette AUXG18KRLB Design & Technical Manual page 35

¢ External heater output
Function Rotary SW of External
setting / input and output PCB
60-11 / D
60-00 / 2
60-09 / B
60-10 / C
Output signal
Low → High
Off → On
High → Low
On → Off
Specifications of the signal output performance are as shown as follows:
Example: When set temperature (Ts) is set at 22 °C;
• And room temperature (Tr) increase above 12 °C, signal output is on.
• And Tr increase above 21 °C, signal output is off.
• And Tr decrease below 19 °C, signal output is on.
• And Tr decrease below 10 °C, signal output is off.
The output also turns off in defrost operation.
8-4. Details of function
Output of indoor unit
External input and output
Heater turns on as shown in diagram of heating temperature
Heater turns off as shown in diagram of heating temperature
• Other than Heating mode
• Error occurred
• Forced thermo off
• Fan stop protection
Tr-Ts=-1 °C
Tr-Ts=-10 °C
External output
CN47
Output 3
PCB
Condition
Tr-Ts
Off
Tr-Ts=-3 °C
On
Tr-Ts=-12 °C
Off
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Output signal Command
Low → High Heater on
High → Low Heater off
Off → On Heater on
On → Off Heater off
8. External input and output