Panasonic CS-VU9SKQ, Руководство по обслуживанию

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14.9 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 based on outdoor air temperature.
14.10 Cooling Overload Control

Pipe temperature limitation / restriction.
o
Detects the outdoor pipe temperature and carry out restriction / limitation below (Limit the compressor
operation frequency).
o
The compressor stops if outdoor pipe temperature exceeds 61°C (VU9SK), 63°C (VU12, 18SK).
o
If the compressor stops 4 times in 20 minutes, Timer LED blinks (“F95” indicated: Outdoor high pressure rise
protection).
14.11 Freeze Prevention Control 1

When indoor heat exchanger temperature is lower than 0°C continuously for 6 minutes, compressor will stops
operation.

Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 5°C.

At the same time, indoor fan speed will be higher than during its normal operation.

If indoor heat exchanger is higher than 5°C for 5 minutes, the fan speed will return to its normal operation.
14.12 Freeze Prevention Control 2

Control start conditions
o
During Cooling operation and soft dry operation.
 During thermo OFF condition, indoor intake temperature is less than 10°C or
 Compressor stops for freeze prevention control
o
Either one of the conditions above occurs 5 times in 60 minutes.

Control contents
o
Operation stops.
o
Timer LED blinks and “H99” indicated.
14.13 Dew Prevention Control

To prevent dew formation at indoor unit discharge area.

This control will be activated if:
o
Outdoor air temperature and indoor pipe temperature judgment by microcontroller is fulfilled.
o
When COOL or DRY mode is operated more than 20 minutes or more.

This control stopped if
o
Compressor stopped.
o
Remote Control setting changed (fan speed / temperature).
o
Outdoor air temperature and indoor intake temperature changed.

Fan speed will be adjusted accordingly in this control.
Free
Limited Frequency
Outdoor air temperature
37°C
38°C