Protection Control For Cooling Operation - Panasonic WH-UD05JE5 Service Manual

15.3

Protection Control for Cooling Operation

15.3.1 Outdoor Air Temperature Control

The Compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the
diagram below.

This control will begin 1 minute after the compressor starts.

Compressor frequency will adjust base on outdoor air temperature.
15.3.2 Freeze Prevention Control 1
1 When indoor heat exchanger temperature is lower than 0°C continuously for 10 seconds, compressor will
stop operating.
2 Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 1°C.
3 Indoor heat exchanger freeze prevention (H99) will memory in error history.
25°C
Limited
10°C
frequency
Compressor
Free
stop
167
22°C
8°C