Hi everybody,
I am learning how to charge units now. Today I was charging heat pump with R407c. The service valve was on LP. The amount of refrigerant due to rating label is 900g. I used rothenberger roklima 4f, which charge the unit with bottle pressure. The bottle pressure was 8bar. In this conditions I charge only 280g.
Please teach me what should I do now. Is it possible that the amount of refrigerant on rating label is wrong? I am wondering if i should run compressor to charge the full amount?
Hope for tolerance reply since I am newbie in this area.