Fujitsu Airstage J-IVS AJ 040LCLDH Series Design & Technical Manual page 934

¢ Forced thermostat off function
NOTE: Indoor unit may not perform Thermostat off promptly even if it received the signal by operat-
ing conditions of other indoor unit in the same refrigerant system.
• Edge input only
Function setting
60-00
Example of cooling mode:
Ch3 Input of
CNA03 or CNA04
Thermostat
Room temp.
Set temp.
 Forced thermostat off examples
• Example 1:
– In-line connection
– Function setting for Fan setting when cooling thermostat off
Number 49-00 (Follow the setting on the remote controller)
Forced thermostat off is one of the energy-saving functions. For example, when the outdoor tem-
perature is lower than the indoor temperature, indoor unit of air conditioner perform Fan operation
based on the received signal from external controller. (Cooling only)
Cooling operation
(Thermostat on)
3-1. External input
Connector Channel no.
CNA03 or CNA04
On
Off
On
Off
External controller
Thermistor
Damper
Thermistor
Indoor Outdoor
temperature temperature
28˚C 31˚C
- (08-16) -
Input signal
Off → On
Ch3
On → Off
Fan operation
(Thermostat off)
Command
Thermostat off
Normal
Thermistor
Thermistor
Indoor Outdoor
temperature temperature
28˚C 24˚C
3. Indoor unit