8.4.2.4 Condenser high temperature T3 protection.
---55℃<T3<60℃, the compressor frequency will decrease to the lower level until to F1 and then runs
at F1.If T3<54℃, the compressor will keep running at the current frequency.
---T3<52℃, the compressor will not limit the frequency and resume to the former frequency.
---T3>60℃ for 5 seconds, the compressor will stop until T3<52℃.
8.4.2.5 Evaporator low temperature T2 protection.
---T2<0℃, the compressor will stop and restart when T2>=5℃.
---0℃≦T2<4℃, the compressor frequency will be limited and decreased to the lower level
---4℃≤T2≤7℃, the compressor will keep the current frequency.
---T2>7℃, the compressor frequency will not be limited.
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