Daikin R-410A Service Manual page 162

Functional concept
1
At compressor
startup
2
3
4
5
2–24
In cooling: The indoor fan is operated at low speed until the low-pressure value reaches 6 bar.
In heating: Hot startup controlWhen performing a startup, or after the defrosting cycle has been
completed, the indoor fan will be controlled as to prevent cold air draft and secure the starting
performance (quick pressure build-up).
Indoor unit fan: OFF
Heating operation is turend on with remote control.
Indoor unit fan: LL tap
Condition A is met.
Indoor unit fan: L tap
Condition B is met.
Indoor unit fan: M tap
Condition C is met.
Indoor unit fan: Set fan speed
Indoor unit h/e temp > 34°C
Indoor unit h/e temp > indoor suction air temp
+17°C (+12°C if outside temperature is < 5°C)
Indoor unit h/e temp > indoor suction air temp
+22°C (+20°C if outside temperature is < 5°C)
3 minutes elapsed after compressor startup
5.5 minutes elapsed after compressor startup
10.5 minutes elapsed after compressor startup
(Continuing L tap on indoor unit without M tap equipped)
Condition A
O
O
---
O
---
---
ESIEN05-04
Condition B Condition C
O O
O ---
--- O
--- ---
O ---
--- O
Part 2 – Functional Description