Operation Detail - Fujitsu ASG30LMTA Service Instruction

7. Operation detail

7-1 Alternative operation
Controls the units operations by using the weekly timer of the primary unit.
When the weekly timer is activated and the primary unit operation is turned off, the secondary
unit starts operation simultaneously.
Also, when the weekly timer is activated and the primary unit operation is turned on, the secondary
unit stops operation simultaneously.
Primary unit
Secondary unit
7-2 Backup operation
Regardless of the primary-secondary relation of the unit, if an error occurred on one unit, operation
start indication is issued to another unit and the unit starts backup operation.
Indoor unit A
Indoor unit B
7-3 Supporting operation
When the room temperature does not reach to the set point after a certain period of time, regardless
of the primary-secondary relation of the unit, operation start indication is issued to another
unit and both indoor units perform air conditioning simultaneously.
Indoor unit A
Indoor unit B
*: Operaion is started even when the unit is stopped by the weekly timer.
Ts + 2.5 °C
AMP Air Conditioning
Off timer expired
On
Off
On
Off
Error occurred
On
Off
On
Off
Set point non-attainment
On
Off
On
Off
Supporting operation: On
Supporting operation: Off
On timer expired
Ts + 0.5 °C
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