Operation Control; Cooling Operation - Panasonic PAPAMY1604017CE Service Manual

11. Operation Control

11.1 Cooling Operation

11.1.1 Outdoor fan control

When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted
according to figure below:
11.1.2 Annual Cooling control

This control is to enable cooling operation when outdoor ambient temperature is low.

Control start conditions:
Cooling operation is activated with compressor ON.
o
Outdoor ambient temperature is less than 59°F
o

Control contents:
When the above conditions are fulfilled, based on outdoor pipe temperature, the outdoor fan motor will
o
operate according to figure below:

To improve the judgment accuracy during annual cooling control, outdoor ambient temperature sampling for
2 minutes will be activated every 35 minutes under designated fan speed.

Control stop conditions:
When either one of the start conditions are not complied.
o
RPM free
59°F
RPM controlled
8.6°F
Stopped
OD temp.
RPM up
93.2°F
RPM unchanged
75.2°F
RPM down
66.2°F
Stopped
OD Pipe temp.
21
55.4°F
91.4°F
73.4°F
64.4°F