I have a switch (Double pole / One throw) that controls the ceiling fan and light in my master bathroom (B1). I'm considering to replace it with two single switches, so I don't need to turn the light on if I want just to use a fan, and vice versa - to use a light without fan.
- When I turn the lights ON, the fan is ON with a delay (approx 1 min). If I turn the lights OFF, the fan is OFF with a delay approx 5 min. That delay is not controlled by that switch (it can't do that by specs).
- The same fan is also used for the second bathroom (B2). It also has a switch that controls it. However it works differently (less control). If I turn the lights ON only in B2, fan is not activated. If I then turn the lights in B1, it's activated. Next, if I turn the lights OFF in B1 but leave the B2 lights ON, the fan is still working till B2 lights are OFF (+ 5 min delay). So basically B2 switch can run the fan only if it's already activated by B1.
The wiring diagram looks like below:
Cable 1 (two ends, black (C1_1) and red(C1_2))
Cable 2 (one red end C2)
Cable 3 (one red end C3)
The switch has 4 terminals (let me name it T1-T2-T3-T4).
C1_1 --> T1
C1_2 --> T3
T3 --> T4
C2 --> T2
C3 --> T2
1) Is it correct to assume that switch really controls fan/light and can be replaced with two single switches? Or I need to wire more cables?
2) Is it correct to assume that T3 & T4 are for LINE, and T1 & T2 are for LOAD?
3) What is the purpose of C3? Does it have any relations to B2?