Panasonic S-160PE1R5B, Технические данные и руководство по обслуживанию

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4-7
4
8) Defrosting Control
This control function removes frost that has adhered to the outdoor heat exchanger during the heating operation.
The control is performed to prevent the deterioration of the heating capabilities attributed to the adherence of
frost, and to prevent the crack or crush of pipes attributed to the accretion of ice.
The following control is performed in accordance with the ambient temperature and the outdoor heat exchanger
temperature sensor (C1).
Overall Flow Chart of Defrosting Control
Normal heating operation
Has frost adherence been
detected?
Has more than 20 minutes
(heating mask time) elapsed?
Heating operation resumed
Yes (elapsed)
Yes (satisfied)
Have the conditions for ending
defrosting been satisfied?
Heating
operation
continued
Heating
operation
continued
Defrosting
operation
continued
Yes (detected)
Defrosting operations commenced
No
No
No
Frost adherence detection
• If the following conditions are satisfied during heating operations, it is regarded as “frost adherence is detected”.
• Frost adherence detection is performed in accordance with the ambient temperature (TO) and the outdoor heat exchanger
temperature sensor min(C1, C2).
• Frost adherence detection conditions
(a) Following satisfied condition is detected for accumulation of 60 minutes.
Outdoor heat exchanger temperature sensor min(C1, C2) < L1
(b) Following satisfied condition is detected for consecutive 1 minutes or more, 2 times.
Outdoor heat exchanger temperature sensor min(C1, C2) < L2
<U-160PZH2R5, U-160PZH2R8> _
_
-30
-28
-1
-6.1
-4.1
L2
L1
-3
3.6
-27.8
Ambient temperature
Outdoor heat exchanger temperature sensor min (C1, C2) (°C)
Ending Defrosting
Defrosting operations are ended when the following conditions are satisfied.
• Ending defrosting conditions
(a)
(b)
(c)
When the temperature of the outdoor heat exchanger temperature sensor (C1) is 10°C or higher.
When the temperature of the outdoor heat exchanger temperature sensor (C1) is 6°C or higher for consecutive
60 seconds.
When a maximum of 15 minutes defrosting time has elaped.
9) Outdoor Unit Fan Control
The appropriate rotations per minute for the outdoor unit fan are determined in accordance with the ambient
temperature and the frequency of the compressor inverter.
The outdoor unit fan step is controlled between a range of W0 (Step 1) and WF (Step 16).
<U-200PZH2R8, U-224PZH2R8>
-30
-28
-1
-8.6
-6.6
L2
L1
-3
7.2
-27.8
Ambient temperature
Outdoor heat exchanger temperature sensor min (C1, C2) (°C)
(c) Following satisfied condition is detected for accumulation of over 80 minutes.
Outdoor heat exchanger temperature sensor min(C1, C2) < -3 °C
Heating Mask Time
This refers to the shortest time that heating operations must be performed without defrosting operations being executed.
The mask time for this model is 20 minutes.
* Defrosting operations will not be commenced until the defrosting mask time has elapsed, even if frost adherence has
been detected.
<U-180PZH2R8>
-30
-28
-1
-7.1
L2
L1
-3
5.0
-27.9
-5.1
Ambient temperature
Outdoor heat exchanger temperature sensor min (C1, C2) (°C)
SM830277-00_大洋州向け R32シングル_TD&SM.indb 7 19/02/21 11:54:18