Fan Switch Test
- Remove fan switch from panel. Connect an ohmmeter lead to terminal "G" of switch. See Fig 1 . Leave lead connected throughout testing procedure. Place switch in "OFF" position and touch other ohmmeter lead, in turn, to switch terminals "Bl", "Bu/W", "Bu/Y" and "Bu/Bl". There should be no continuity.
- Place switch in "LOW" position. Touch second ohmmeter lead, in turn, to switch terminals "Bl" and "Bu/W". Continuity should exist. Place switch in "MED" position. Touch second ohmmeter lead, in turn, to terminal "Bl" and "Bu/Y". Continuity should be indicated.
- Place switch in "HIGH" position. Touch second ohmmeter lead, in turn, to terminals "Bl" and "Bu/Bl". Meter should indicate continuity.
- In steps 2) and 3), continuity should not be found at any other terminals than those indicated. If switch did not perform as indicated, replace switch.
NOTE:
Leave ohmmeter connected to "G" lead during test.