Protection Control For Heating Operation - Panasonic CS-CE9PKE Service Manual

13.2.6 Dew Prevention Control 2
•
To prevent dew formation at indoor unit discharge area.
•
This control starts if all conditions continue for 20 minutes:
Operated with Cooling or Soft Dry Mode.
o
Indoor intake temperature is between 25°C and 29°C.
o
Outdoor air temperature is less than 30°C.
o
•
This control stopped if:
When receive air swing change signal from Remote Control.
o
•
The vertical airflow angle will be fixed at 17.5°.
13.2.7 Odor Cut Control
•
To reduce the odor released from the unit.
Start Condition
o
AUTO FAN Speed is selected during COOL or DRY operation.
During freeze prevention control and timer preliminary operation, this control is not applicable.
Control content
o
Depends on compressor conditions:
•
Compressor OFF → Compressor ON.
The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds.
•
Compressor ON → Compressor OFF.
The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds.

13.3 Protection Control For Heating Operation

13.3.1 Intake Air Temperature Control
Compressor will operate at limited freq., if indoor intake air temperature is 30°C or above.
13.3.2 Outdoor Air Temperature Control
•
The Max current value is regulated when the outdoor air temperature rise above 14°C in order to avoid
compressor overloading.
13.3.3 Overload Protection Control
•
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown
below.
•
If the heat exchanger temperature exceeds 60°C, compressor will stop.
Current Regulated
14°C
Free Within Max Limit
Outdoor air temperature
OFF
60°C
Frequency Reduce
52°C
Frequency Limited
49°C
Free
Indoor Heat
Exchanger Temp.
43
12°C
46°C