Dew Prevention Control; Protection Control For Heating Operation; Outdoor Air Temperature Control - Panasonic CS-E9RKUAW Service Manual

15.2.5

Dew Prevention Control 1


To prevent dew formation at indoor unit discharge area.

This control will be activated if:
Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled.
o
When Cooling or Dry mode is operated more than 20 minutes or more.
o

This control stopped if:
Compressor stopped.
o
Remote control setting changed (fan speed / temperature).
o
Outdoor air temperature and indoor intake temperature changed.
o

Fan speed, angle of louver (vertical airflow angle) will be adjusted accordingly in this control.
1. Fan speed will be increased slowly when control is activated until predetermine value.

Compressor frequency will be regulated accordingly.
15.2.6

Protection Control For Heating Operation

15.2.6.1 Intake Air Temperature Control
Compressor will operate at limited freq., if indoor intake air temperature is 86°F or above.
15.2.6.2

Outdoor Air Temperature Control


The maximum current value is regulated when the outdoor air temperature rise above 57.2°F in order to avoid
compressor overloading.

The compressor will be stopped at outdoor air temperature ≤ -4°F. The unit still operate within the temperature
range.
Current Regulated
57.2°F
Free withing maximum limit
Outdoor Air Temperature
Compressor ON
-0.4°F
Compressor OFF
Outdoor Air Temperature
64
52.6°F
-4°F