Dear Sir I just bought a GE basic timer and in installed it. Followed the instructions I hooked the 2 wires from the timer to the 2 wires in the electrical box, I set up the (segments)time when to come on and off. The dial itself will not rotate under ac power. i could rotate the dial by hand and the outside lights will come on. I operate the slide switch to on and it works, so does the off switch. The white wire on the timer is left open. This is my second one, i bought the first one with the same problem and i brought back , I thought it was defected. Confused. Ant suggestions?\r\n Bob

Here are the instruction on how to use the timer.
http://waterheatertimer.org/pdf/GE-15325-InWall-Timer.pdf

You are asking about GE 15312 timer.
Open following link for exact single-pole wiring illustrations:
http://waterheatertimer.org/How-to-wire-GE-15312-timer.html


If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

I write complete answers, and know the GE timer line.
Open links to illustrate discussion.
Aug 2011, Jasco does not show a manual for 15351 timer.

They show 120V 15350, which is identical to 120V 15306.

That makes me believe that 240Volt GE15351 is identical to 240V GE15307.
BUT the 15351 might be a DPST with NO and NC terminals >>> add a comment if your instructions say anything about NO NC terminals.

If 15351 and 15307 are identical, then your wiring is 100% correct, assuming you connected hot leads to terminals L and 1.
http://waterheatertimer.org/images/GE-15307-wiring-250.jpg
http://waterheatertimer.org/GE-timers-and-manuals.html#15306

Checking details:
1) You checked that terminals L and 1 are not connected by a brass bridge.
The 120Volt timer comes with a brass bridge across L and 1
2) Timer mechanism is attached to enclosure with 2 screws. Remove timer mechanism from enclosure, and compare back of your timer with following image to confirm timer is DPST.
http://waterheatertimer.org/images/IMG_9334-GE15307-500.jpg
3) Test 10-3 wire from breaker box. Test each wire to bare ground to confirm the hot wires. Then test each hot wire to other wire to confirm neutral wire. Tape tester leads to wood sticks to keep hands away from power and stand on dry boards.
4) Read nameplate on motor to make sure it is single-speed 240Volt.
5) IF motor is 2-speed, then look at wiring diagram and then add a comment with that information.
6) If pump motor trips breaker when connected directly, then pump might be shorted out. Double check wiring diagram on pump.

7) Take photos of problem. Post photos on flickr. Then add a comment with links to photos so I can see wiring diagrams, for possible help.

Something doesn't sound right.
I have two of these timers and cannot figure out what your timer is doing, unless wiring is wrong or timer is defective, or you connected timer to 3-way switch.

15070 is single pole analog timer that requires neutral wire.
Slide switch is set to 'Timer' for automatic timer functions.

Open following links to identify timer and see wiring and how to set analog timers:
http://waterheatertimer.org/GE-timers-and-manuals.html#15070
http://waterheatertimer.org/images/GE-15070-wiring-1-500.jpg
http://waterheatertimer.org/How-to-set-timers.html
http://waterheatertimer.org/images/Woods-59017-mechanical-timer-300.jpg
http://waterheatertimer.org/Woods-timers-and-manuals.html#59017

Open following link for TU40 manual and wiring diagrams:
http://waterheatertimer.org/Tork-timers-and-manuals.html

TU40 timer, like most of the new generation Intermatic and GE timers, can be wired with different voltages and wired many different ways and control multiple loads or single-load plus 2-speed operation.
The following is illustration shows basic wiring to control single 240Volt water heater.
http://waterheatertimer.org/images/Tork-TU-wiring-500-2-500.jpg

GE 15070 timer does not have ground wire.
I assume this timer is double insulated, just like some power tools and electronics only have two prong plug.
Leave bare ground wire attached to other bare grounds in the box, and shove grounds to back of box.
I have one of these timers installed.
Timer has red, black and white wires
http://waterheatertimer.org/GE-timers-and-manuals.html#15070

How to wire GE 15070 timer:
1) Switch has 2 insulated wires. Take switch wires and connect them to timer-black-wire and timer-red-wire. Choose either one for now.
2) In back of electric box are white wires twisted together and covered with wire nut. Connect timer-white to these wires.
3) If electric box does not have white wires described above, then connect timer-white to bare ground, along with timer-green wire.
4) Turn on electricity, and slide switch to ON-or-OFF. If lights come on, timer is wired correctly. If lights do not come on, then reverse timer-red and timer-black wires.

5) Add a comment for more free help.
6) Also take advantage of fixya phone service.
For a price, fixya expert speaks with you over phone while you work on timer or any do-it-yourself project.

I test timers, and no damage is done.
http://waterheatertimer.org/GE-timers-and-manuals.html#15086

Sounds like you wired red and white wires together, or installed timer in place of 3-way switch.
15086 will not replace a 3-way switch.
For example, when 2 switches control hallway light, that is 3-way.
Link above has list of timers that replace 3-way switch.

How to wire 15071, 15086, 15265, 15266 timers:
1) Switch has 2 insulated wires. Take switch wires and connect them to timer-black-wire and timer-red-wire. Choose either one for now.
2) In back of electric box are white wires twisted together and covered with wire nut. Connect timer-white to these wires. This will power timer electronics.
3) If electric box does not have white wires described above, then connect timer-white to bare ground, along with timer-green wire.
4) Turn on electricity, and push ON-OFF button located in each corner. If lights come on, timer is wired correctly. If lights do not come on, then reverse timer-red and timer-black wires.

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, fixya expert speaks with you over phone while you work on any do-it-yourself project.

It sounds like wiring is wrong.

If you have GE Tork Intermatic UPM Woods Brinks Hagar Pass-n-Seymour Stanley Westek in-wall timer, with red, black, white and green wires, then you probably put red and white wires together.
Add a comment any time.

See instructions along with image at following link:
http://waterheatertimer.org/Program-wire-Utilitec-0192773.html

Heres how to wire timer
1) Timer-green-wire connects to bare ground wire.
2) Switch has 2 wires. Take switch wires and connect them to timer-black-wire and timer-red-wire. Choose either one for now.
3) In back of electric box are white wires twisted together and covered with wire nut. Connect timer-white to these wires.
4) If electric box does not have white wires described above, then connect timer-white to bare ground, along with timer-green wire.
5) Turn on electricity, and push ON-OFF button > with GE timer, door is push-button switch. If lights come on, timer is wired correctly. If lights do not come on, then reverse timer-red and timer-black wires.

Hello, I bought an in door smart digital timer (G.E.) or Jasco product for my front porch light. I hooked all the wires as instructed and programmed according to instructions. I have a two wire system, so i left the green wire unattached. The light comes on but flashes very fast. What's up with that? This is the second one i've replaced, the first one did the same thing!. Whats wrong?
Thanks,...
M Jones
Sacramento, CA.

The black and white, The red wire is the ground. Ron