Daikin FTKD50BVM, Service Manual

Page: 63 / 210

Control Specification Si04-306
54 Function and Control
3.8 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 in cooling operation
5. Tap control when drooping function is working
6. Fan control in forced operation
7. Fan control in indoor/outdoor unit silent operation
8. Fan control in powerful mode
9. Fan control in normal operation
Detail Fan OFF Control when Stopped
„
Fan OFF delay for 60 seconds must be made when the compressor is stopped.
Tap Control in indoor/outdoor unit silent operation
1. When Cooling Operation
When the outdoor air temperature is lower than 37°C, the fan tap must be set to L.
2. When Heating Operation
When the outdoor air temperature is higher than 4°C, the fan tap must be turned to L (only
for heat pump model).
3.9 Moisture 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
„
Operation stop depending on the outdoor air temperature
Compressor operation turns OFF under the conditions that the system is in cooling operation
and outdoor air temperature is below –10°C (R410A), –5°C (R22).
Cooling Only Model
„
Operation stops depending on the outdoor air temperature.
Compressor operation turns OFF under the condition that outdoor air temperature is below –
12°C (R410A), –5°C (R22).