appliance timer wiring question

[slowtwitch73]

We have an air recirc system running off an old 24hr timer. I'd like to replace it with a new digital model. I found one but I'm not sure it will wire up. The old timer has 3 wires (red, black, white) coming into from blower motor wired to corresponding colors from timing unit. I attached a wiring diagram from the newer unit I found.

Could it be wired up to work?

 

[nadogail]

The wiring diagram you have posted seems logical and, based on the information I have gathered from your post, I would connect the fan load to the Blue Terminal.

 

[Milton Shaw]

That diagram looks wrong to me. The load is showing that it is hooked up to neutral on the blue and white wire. Should show hooked up to red and blue wire for it to run on 120 or skip the blue and go red to white for 120. That timer looks like it is actually a two pole timer that would work on 240 volt or 120 volts and be switching both hot and neutral.

 

[slowtwitch73]

Hmm....

 

[klassenl]

That diagram looks wrong to me. The load is showing that it is hooked up to neutral on the blue and white wire. Should show hooked up to red and blue wire for it to run on 120 or skip the blue and go red to white for 120. That timer looks like it is actually a two pole timer that would work on 240 volt or 120 volts and be switching both hot and neutral.

Red: Not used in single pole installations.

 

[nadogail]

Please let us know if any or all of us were able to give you useful information.

 

[The Cobbler]

the schematic does not show the blue & white wire connecting . it sort of implies it does, but it doesn't connect. the red is not used in single pole (120v) installations as mentioned so the blue goes to your load & the white to neutral

 

[slowtwitch73]

Ill report back... likely have questions once unit arrives.

 

[dogdog]

Nvm.

 

[slowtwitch73]

Alright, I'm back on this after replacing both blower motors.

I have the new switch in hand.. wiring diagram is the same as I originally posted.

The air recirc unit has a 110 plug. Coming out of the unit are the 3 wires shown which go to the timer I am trying to replace. Black and white are hot, red appears to be neutral.

Even with no timer (three wires not connected to anything), the blowers will run if I plug it in. I cant figure out why... something I'm not understanding because the old timer did work. I assumed once the timer was disconnected the blowers would not run.

Anyone make sense of this?

I attached a pic of the wires to the timer and the wiring diagram on the old timer.

 

[slowtwitch73]

White is actually neutral, black hot, red is load I'm guessing. Can't figure out why the thing is running.. seems the back and red would need to be wired together?

Hey guys, I got it all figured out. My kid had a switch turned on his bathroom that caused the air recirc unit to run regardless what the timer 'said'. Once I turned that off, the unit turned off. The switch wired up easy as per diagram.

THANKS.

 

[Neggy]

any timer or photoelectric sensor I have ever wired has always been green or bare for ground, white for Neutral, Black for hot, and the other wire (normally red) goes to the load.

The black and *********** the timer/device, the red or other color is the switched hot to the load, which is why the device and load are all connected to white.

 

[slowtwitch73]

Yes, that is how this one is wired as well.

 

[nadogail]

Another case of too many cooks adding unknowns into the equation.
Glad everything is now working.