ComfortZone RX50 - Blocking of Interfering Resonances; Maximum Frequency of the Compressor

ComfortZone RX35/RX50/RX65
service & maintenance
40
11.3 Blocking of interfering resonances.
The RX35/50/65 has a frequency controlled
compressor. At certain frequencies, resonance
sounds can sometimes occur in the house. To
minimize disturbing resonance sounds, the
control has a blocking function which allows the
control card to jump over three (5) mutually
independent frequencies.
The function causes the control card to skip a
certain frequency (Hz) +/- 2.0Hz (RX50 and
RX65) or electricity. +/- 1.5Hz (RX35).
If one perceives that one has a disturbing
frequency at 63Hz, then the control card's
blocking parameter is programmed to 63.0Hz,
which means that the frequencies 61.0 - 65.0Hz
(or 61.5-64.5 Hz for RX35) are blocked.
Then the compressor slowly accelerates up to
the lower frequency and passes quickly past to
the upper. The disturbing sound is minimized.
A larger area can be blocked by entering two or
three frequencies.
E.g. for RX50 61.0 - 63.0 - 65.0 - 67.0 - 69.0.
Which for 63.0 Hz and 67.0 Hz gives a blocking
from 61.0 to 69.0 Hz.
Go to "Advanced settings" / "General settings"
hold the button for 5 seconds.
Go to "Heat pump settings" / VP compressor "/" Blocked frequency 1 ". Specify the
frequency to be blocked.
Proceed to "Blocked Frequency 2, 3,… etc. if desired.
11.4 Maximum frequency of the compressor
At lower airflow, the compressor's maximum power should be reduced for the
lowest noise level and smoother operation.
Air Flow l/s
Frequency RX35
(Hz)
Frequency RX50
(Hz)
Frequency RX65
(Hz)
>65
-
-
No reduction
50-65
-
No reduction
82
35-50
No reduction
68
68
27-35
No reduction
55
55
21-27
40
-
-
To change parameter <Comp. Freq. max.> options can be found in
the menu: "Advanced settings / Heat pump settings / VP
compressor/".