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For operation check at installation and breakdown self-
diagnosis, continuous operation of 2-way valve and vacuum
pump is conducted by checking installation from indoor
room.
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Degree of frosting is expected by operation time, heat
exchanger temperature and outdoor air temperature.
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According to frosting conditions, deicing operation is
effectively performed.
1. Timer for deice control will function when outdoor heat
exchanger temperature after continuous 40 minutes heating
operation is below the primary judgment temperature.
When the timer reaches 20 minutes or heat exchanger
temperature is below the secondary judgment temperature,
deicing operation will start.
2. Four-way valve is switched and deicing is performed by
cooling cycle.
3. Deicing will be stopped when 12 minutes elapsed from
starting of the operation or heat exchanger temperature
reaches 17°C or more.
9.13.7. Installation (Oxygen) Check Control
9.14. Deice Control <Heating>
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CS-HE9DKE CU-HE9DKE / CS-HE12DKE CU-HE12DKE