[
VIII
Control ]
- 95 -
HWE10190
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 (90 minutes when the defrost prohibit
timer is set to 90 minutes).
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
(Outdoor unit model)
TH3
SW3 - 3 OFF
SW3 - 3 ON
250 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]
Compressor frequency
Model
(Outdoor unit model)
Frequency
250 model
65 Hz
350 model
103 Hz
400 model
103 Hz
Outdoor unit fan
Stopped
SV1a
ON
SV5b, SV5c
*1
*1. Applicable to the P350 and P400 models only.
OFF (open)
21S4a OFF
21S4b, 21S4c
*1
OFF
SV9
OFF
LEV1 0
pulse
*2
*2. This value may be greater than 0 pulse depending on the 63LS and TH4 status.
LEV2a 3000
pulses
0000002115.book 95 ページ 2011年6月4日 土曜日 午前10時48分
Содержание PUHY-P250YJM-A
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Страница 45: ... II Restrictions 36 HWE10190 GB ...
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Страница 69: ... IV Indoor Unit Components 60 HWE10190 GB ...
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Страница 73: ... V Remote Controller 64 HWE10190 GB ...
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Страница 82: ... 73 HWE10190 GB VII Refrigerant Circuit 1 Refrigerant Circuit Diagram 75 2 Principal Parts and Functions 78 ...
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Страница 91: ... VII Refrigerant Circuit 82 HWE10190 GB ...
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Страница 115: ... VIII Control 106 HWE10190 GB ...
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Страница 225: ... X Troubleshooting 216 HWE10190 GB ...
Страница 226: ... 217 HWE10190 GB XI LED Monitor Display on the Outdoor Unit Board 1 How to Read the LED on the Service Monitor 219 ...
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