Heating Peak-Cut Control; Fan Control - Daikin FT25CV1A Service Manual

Control for Heat Pump Models
3.6

Heating Peak-cut Control

Outline Heat Pump Only
During heating operation, the signals being sent from the indoor unit allow the operating
frequency limitation and prevent abnormal high pressure. (The signal from the indoor unit must
be divided as follows.)
Detail Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec. from
operation start.
Control in Each Zone
The heat exchange intermediate temperature of indoor unit controls the following.
3.7

Fan Control

Outline Fan control is carried out according to the following priority.
1. Fan ON control for electric component cooling fan
2. Fan control when defrosting
3. Fan OFF delay when stopped
4. ON/OFF control when cooling operation
5. Tap control when drooping function is working
6. Fan control when forced operation
7. Fan control in low noise mode
8. Fan control during heating operation
9. Fan control in the quiet mode
10.Fan control in the powerful mode
11.Fan control for pressure difference upkeep
Detail Fan OFF Control when Stopped
44
Fan OFF delay for 60 seconds must be made when the compressor is stopped.
Si01-406
Functions and Control