Fujitsu ABYG36KRTA, Service Manual

Page: 160 / 164

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External heater output
Function
setting /
Rotary SW of External
input and output PCB
External output Output signal Command
60-11 / D Output of indoor unit CN47
Low → High Heater on
High → Low Heater off
60-00 / 2
External input and output
PCB
Output 3
Off → On Heater on
60-09 / B
60-10 / C On → Off Heater off
Output signal Condition
Low → High
Heater turns on as shown in diagram of heating temperature
Off → On
High → Low
Heater turns off as shown in diagram of heating temperature
• Other than Heating mode
On → Off • Error occurred
• Forced thermo off
• Fan stop protection
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.
Off
Off
On
Tr-Ts
Tr-Ts=-1 °C
Tr-Ts=-10 °C
Tr-Ts=-3 °C
Tr-Ts=-12 °C
The output also turns off in defrost operation.
3-4. Details of function
- (05-20) -
3. External input and output for indoor unit
FIELD WORKING FIELD WORKING