Daikin FHYB45FV1 [84/244] Control

Daikin FVY71LVE [84/244] Control
Si-71A Function Details
Explanation of Function Operation 73
Control
During heating, a defrosting request is made by the indoor unit when defrosting conditions have been
realized. The control method are as following.
Note:
4. Defrosting completion
Defrosting ends when outdoor unit heat exchange temperature rises above 10°C and a minimum of 10
minutes elapses from the time defrosting begins, or when discharge pipe temperature rises above
120°C.
5. Defrosting completion for motor operated valve.
Operated at best initial opening and opening speed according to operating conditions at the start of
defrosting.
6. Defrosting completion for outdoor unit fan
Operated at best fan tap according to operating conditions at the start of defrosting.
7. Indoor unit fan
Hot start standby is carried out until 40 seconds elapses from the time defrosting ends, or until the
indoor unit heat exchange temperature rises.
Temperature conditions
Defrost complete condition
If one of the following conditions is met after defrosting function has been operating for one minute or
longer, the defrosting operation stops.
Outdoor unit heat exchanger temperature
10°C
Discharge pipe temperature > 120°C

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