Fan Control; Liquid Compression Protection Function 2 - Daikin D Series Service Manual

Control Specification
3.8

Fan Control

Outline Fan control is carried out with following functions.
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. Fan control when the number of heating rooms decreases
6. Fan control when forced operation
7. Fan control in indoor / outdoor unit silent operation
8. Fan control during heating operation
9. Fan control in the powerful mode
10.Fan control for pressure difference upkeep
Detail Fan OFF Control when Stopped
Tap Control in Indoor / Outdoor Unit Silent Operation
1. When Cooling Operation
2. When Heating Operation
3.9

Liquid Compression Protection Function 2

Outline In order to obtain the dependability of the compressor, the compressor must be stopped
according to the conditions of the temperature of the outdoor air and outdoor heat exchanger.
Detail Heat Pump Model
Compressor operation turns OFF under the conditions that the system is in cooling operation
and outdoor air temperature is below 10°C.
Cooling Only Model
Compressor operation turns OFF under the condition that outdoor air temperature is below
10°C.
60
Fan OFF delay for 60 seconds must be made when the compressor is stopped.
When the outdoor air temperature is 18 ~ 37°C, the fan tap must be set to M.
When the outdoor air temperature is lower than 18°C, the fan tap must be set to L.
When the outdoor air temperature is higher than 4°C, the fan tap must be turned to L (only
for heat pump model).
Operation stop depending on the outdoor air temperature
Operation stops depending on the outdoor air temperature.
SiBE12-519
Function and Control