[
VII
Control ]
- 90 -
HWE07010
GB
-7- Defrost Operation Control
(1) Starting the defrost operation
The defrost cycle starts when the pipe temperature (TH3), in the following table, or below has continuously been detected for
3 minutes after the integrated compressor operation time of 50 minutes have passed.
If 10 minutes have passed since compressor start-up or since the completion of defrost operation, forced defrost operation
will start by turning on the forced defrost switch (DIP SW2-7).
Even if the defrost prohibit timer is set to 90 minutes, the actual defrost prohibit time for the next operation will be 50 minutes
if defrosting took 12 minutes.
In the multiple-outdoor-unit system, all of the outdoor units that are in operation go into the defrost mode simultaneously. The
unit(s) that is stopped at the time defrost operation starts remains stopped.
(2) Defrost operation
Model
TH3
SW3 - 3 OFF
SW3 - 3 ON
200 model
- 10°C [14°F]
- 5°C [23°F]
250 model
- 10°C [14°F]
- 5°C [23°F]
300 model
- 10°C [14°F]
- 5°C [23°F]
350 model
- 8°C [18°F]
- 5°C [23°F]
400 model
- 8°C [18°F]
- 5°C [23°F]
450 model
- 8°C [18°F]
- 5°C [23°F]
Compressor frequency
Model
Compressor frequency
200 model
60 Hz
250 model
65 Hz
300 model
65 Hz
350 model
103 Hz
400 model
103 Hz
450 model
103 Hz
Outdoor unit fan
Stopped
SV1a
ON
SV5b, SV5c
ON
21S4a OFF
21S4b, 21S4c
OFF
SV9
OFF
LEV1 480
pulses
LEV2a 1400
pulses
LEV2b 1400
pulses
Содержание PUHY-(E)P300
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