Manually operate the control switch and measure the voltage of blower motor between pin 1 and 2.
Select the control switch to raise voltage until high relay operates.
Fan | Motor Voltage |
First speed | 3.8V ± 0.5V |
Second speed | 5.2V ± 0.5V |
Third speed | 6.5V ± 0.5V |
Fourth speed | 7.9V ± 0.5V |
Fifth speed | 9.5V ± 0.5V |
Sixth speed | 10.6V ± 0.5V |
Seventh speed | 12.0V (high relay operates) |