Mitsubishi Hara

[marthe1994]

Anybody here had problems with Mitsubishi Hara heatpump? I had problems like it holds back airflow and does not warm up rooms. Manufacturer says it is constructed this way to save power. I say it is stupid to make a heatpump that slows down before the room is warm enough, just to save power. If i want to save power, I leave my rooms cold and turn off the heatpump.

[GREEK_REF]

Raise the set point and observe how the machine responds also check the differential set point. If the rooms steal cold something else happens

[marthe1994]

Raise the set point and observe how the machine responds also check the differential set point. If the rooms steal cold something else happens

I tried everything. I raised the setpoint, I tried all kinds of adjustments, that includes setting the fan on different setting, and yes, I also tried to raise the setpoint on temperature. Believe me, I tried everything. The pressureline got too hot and the compressor slowed down because of heat. But the fan does not blow hard enough. Than I changed the Mitsubishi Hara 35 with a much smaller unit, a Fujitsu 12 LG. And within twenty minutes the room was warm enough and has been since and the customer is happy.
Not every Mitsubishi Hara I sold was like that. Therefor I claim there is a production-error on some of them, perhaps a serial-fault in production. The problem is to know wich pump has this error. Therefor I quit selling them.