Lennox LNINV2610 Service Manual page 10

Indoor side noise when blowing
45
40
35
30
Low Middle
Indoor fan motor rotating speed
LNINV3510
LNINV2610
High Supper High
Outdoor side noise
70
60
LNINV3510
50
40
30
20
0 20 40
Compressor frequency/Hz
LNINV2610
60 80 100