Panasonic WH-UD09HE8 - Protection Control for Cooling Operation

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13.3 Protection Control for Cooling Operation
13.3.1 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.
Free
19°C
16°C
25°C
22°C
Limited
Frequen cy
Compressor
stop
13.3.2 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.