01-18
Compressor OFF
Outdoor fan motor OFF
30 sec later four - way valve OFF
35 sec later compressor ON
3. Defrost Flow Chart
The defrosting shall proceed by the integrating operation time, outdoor temperature
and outdoor heat exchanger temperature as follows.
(Not defrosted for 10 minutes)
Heating operation start : Compressor ON
Outdoor heat exchanger temperature:
Over +13°C
or
Compressor ON time: Maximum 15 minutes
Defrost end
Compressor
integrating
operation:
Over 22 min.
Outdoor
heat exchanger
temperature:
Below - 9°C
Outdoor
heat exchanger
temperature:
Below - 5°C
Compressor
integrating
operation:
Over 35 min.
2nd and later defrost
Integrating defrost
(Constant monitoring)
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Defrost start
Tn-Tn10 < - 5deg
Tn-Tnb < - 2deg
However, Tn < - 6 °C
Compressor
OFF count :
40 times
(Less than 10min.)
1st defrost
Compressor
integrating
operation:
Over 62 min.
Compressor
integrating
operation:
Over 240 min.
Outdoor
heat exchanger
temperature:
Below - 3°C
Compressor
integrating
operation:
Over 215 min.
Outdoor
heat exchanger
temperature:
Below - 5°C
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AMP Air Conditioning
www.ampair.co.uk | [email protected]