Fan Control - Toyotomi GAG-A128GVR Service Manual

Function and Control
Compressor
Four way valve
Electronic expansion
valve opening

6.15 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 99°F, the fan tap must be set to L.
2. When Heating Operation
When the outdoor air temperature is higher than 39°F, the fan tap must be turned to L (only for heat pump model).
Frequency
0Hz
50sec.
ON
OFF
ON
OFF
5sec.
ON
Fan
OFF
450pps
60sec.
600sec.
350pps
PI control
50sec.
5sec.
450pps
Initial opening
27