Daikin EWYQ180DAYN [345/524] Fan control

ESIE06-05 Functional Control for a Standalone Unit

Part 2 – Functional Description 2–119

3.7 Fan Control

Purpose To regulate the high pressure.

There are two different methods used to control the HP.

■ Fan control based on ambient control: only at start-up, of each circuit, for the first 70 seconds

(default).

■ Fan control based on high pressure value, when fan ambient control is finished.

Schematic

overview

Fan control based

on Ambient

Temperature with

Standard Fans

Ambient based control for standard fans

During the first 70 seconds (default), after startup of a circuit, the fan control is based on the ambient

temperature. After this timer the fan control changes to high pressure control, based on high pressure

value.

Parameter 1 and 3 can be changed in the Service/Fan menu.

Fan control based

on high pressure

with standard fans

High pressure based control for standard fans.

After the first 70 seconds (default) fan control is based on high pressure value.

Start up unit

Fan step in function

of HP value

< 7 °C

Amb.

Temp

7-17 °C > 17 °C

70 sec

No Yes

3 5°C

1 15°C

Low High

Ambient temp.

1 : Ambient setp A

3 : Ambient setp B

2 = 1 + 2°C

3 + 2°C

1 =

217°C

47°C