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How to wire 15307ge timer for water heater - Hardware & Accessories

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1) Copy following link for wiring GE15307 (same as Tork 1104) to control 240Volt water heater, plus available repair parts.
http://waterheatertimer.org/GE-timers-and-manuals.html#15306

2) Check that power is off, and troubleshoot electric water heater
http://waterheatertimer.org/images/Voltage-tester-300b.jpg
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

3) Add comment Jan 2013 for live response.

Posted on Jan 07, 2013

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Water heater timer not working or bad wiring?


10/15/2012
Hi Liz.
This is a live answer. And you can add a comment after trying following step, and I will comment back..
Replace battery, and then reset the timer using reset button located to left of display screen.
http://waterheatertimer.org/pdf/eh40-english.pdf

Oct 15, 2012 | Intermatic EH40 - Electronic Water Heater...

1 Answer

Have a Intermatic Water heatr timer connected to our water heater (obviously)... yesterday we drained and repostioned the w/h in order to place a drain pan under it. Now...no hot water. Believe we may have...


Timer is not identified.
Open following link to help identify timer and download manual and look at wiring diagrams for each.
http://waterheatertimer.org/Boxtype.html
By-pass WH40 and T100 series mechanical timer by removing trippers from dial and moving override lever to ON position.
How to troubleshoot mechanical timer:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

Water heater is electric since Intermatic does not make gas water heater timers.
Electric water heater must be completely full of water before turning on circuit breaker, or elements will instantly burn out.
Test electricity and water heater elements:
http://waterheatertimer.org/How-to-test-water-heater-element.html
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html
http://waterheatertimer.org/Test-electricity-to-water-heater.html

Jun 20, 2011 | Intermatic Hardware & Accessories

1 Answer

I have a wh21 Intermatic water heater timer. I installed the shut off and on switches. They are not working. I opened a manual and it stated to make sure the dial is pushed all the way in. I spun the dial...


You might have your Line and Load wires reversed.
Line wires come from circuit breaker.
Load wires go to water heater.
http://waterheatertimer.org/B220C.html

WH21 wiring: There are 2 Hot Line wires coming from breaker box that connect to terminals 1 and 2.
WH21 is SPST and turns off one Hot wire going to Load. So Load wires connect to terminals 2 and 3. Terminal 2 has 2 wires: 1 Line wire and 1 Load wire.
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/wh21%20-%20english.ashx

Keep in mind that WH21 is 25 amp, 2Hp 240Volt timer that will work on water heaters up to 4500 watts. Look at label on side of tank to see wattage. All appliances and motors have labels.
http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html

Larger wattage water heaters require 30 amp water heater timers as shown following page:
http://waterheatertimer.org/Boxtype.html

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you via e-mail while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 21, 2011 | Electric Intermatic Wh 21 Water Heater...

1 Answer

The spring that turns off the power in my Intermatic WH21 timer is broken. Where can I buy a new spring?


Parts are not available for WH21 240V water heater timer.
Timer has 1 year limited warranty.
http://www.intermatic.com/customer%20service/frequently%20asked%20questions.aspx
WH21 is rated for 25Amps and works on water heaters up to 4500Watts.
Look at label on side of tank to see wattage.
WH21 is SPST and turns off one hot wire to water heater.

I ran a business for many years.
Cost of stocking, organizing, and shipping parts is near same cost as new timer.

Following page shows selection of replacement timers:
http://waterheatertimer.org/Boxtype.html

For example, I have tested WH40 and T104 and other timers that show on page.
Trippers and motors are available for Intermatic box timers WH40 and T104, so you can maintain these specific models for many years.
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi
WH40 and T104 timers are SPDT and turn off both hot wires to water heater.
Both timers will work on any wattage residential water heater

http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html

Feb 18, 2011 | Electric Intermatic Wh 21 Water Heater...

1 Answer

WH40 water heater timer: Does black wire from service box go to terminal #1 and black wire to water heater to terminal #2? Does neutral (white) from service box go to terminal #3 and neutral (white) to...


WH40 is 240Volt timer.
WH40 will not work with 120V circuit.

See WH40 wiring illustration at following link:
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html

There are two hot wires in 240V circuit because every circuit requires two wires to complete the circuit.
Hot wires from breaker connect to terminal 1 and 3.
Notice that small white wires are also connected to terminals 1 and 3.
Small white wires power clock motor located on back of mechanism, so this says power from breaker box must arrive on terminals 1 and 3. This insures that clock motor runs continuously.
If clock motor only runs when manual override switch is clicked ON, then your Hot and Load wires are reversed.

Bare ground wire connects to green ground screw.
Wires going to Load (water heater) connect to terminals 2 and 4.

FYI: Terminal A is not used unless circuit also has a Neutral wire,
See basic water heater circuit Diagram #2:
http://waterheatertimer.org/240-v-water-heater-circuit.html

Terminal A is also used if you want to convert WH40 to 120V timer by replacing 240V clock with 120V clock.
How to convert Intermatic 240V timer to 120V timer
http://www.fixya.com/support/t7353947-intermatic_timer_wg

Dec 24, 2010 | Electric Intermatic Inc Wh40 Water Heater...

1 Answer

I have a Et 70115C Intermatic Timer, I want to install it on my Hot Water Heater, I have connected the 2 110V leads from my breaker to Terminals 1 & 2 and connected the two leads from the hot water...


A) 5 terminal ET70115C.
Voltage selector set to 240.

B) BUT you say you have 120Volts from breaker >>> confusing, so I'm proceeding on basis that you meant to say 240V from breaker.
Add a comment at any time.

C) Review timer:
5-terminal ET70115 timer has NO and NC terminals
NC is normally closed >> this terminal has power when timer is OFF
NO is normally open >> this terminals has power when timer turns ON
For water heater, you want NO terminal 4 so water heater turns ON when timer turns ON

D) Wire for 240Volt water heater

Two hot wires from breaker connect to terminals 1 and 2. This powers timer clock.
Jumper wire connects between terminal 2 to terminal 3. This sends power to the switch circuit.
Wires to water heater connect to terminals 1 and 4

E) 5-terminal timer turns off 1 hot wire to 240V water heater.
Turning off 1 hot wire will stop 240V circuit from working; Water heater thermostats also turn off one hot wire.
240V water heater has black and red wire.
Wire from terminal 4 should connect to Black wire on water heater.

Diagram shows two wires on terminal 1
Two wires on terminal 2
One jumper wire on terminal 3
One wire on terminal 4
Zero wires on terminal 5


geno_3245_133.jpg

Dec 03, 2010 | Intermatic ET70115C Electronic Energy...

1 Answer

How do I wire the timer. I have a small 110v water heater for a sink


Good choice for 120V water heater.

Black Hot wire from breaker connects to terminal 2.
Put jumper wire from terminal 2 to terminal 3.

White wire from breaker box connects to terminal 1
White wire going to water heater also connects to terminal 1

Black wire going to water heater connects to terminal 4

add a comment if you have more problems.

Nov 24, 2010 | Intermatic 7 Day Electronic Timer Eh10...

1 Answer

I have a problem with my wh21 intermatic hot water heater timer.When it trips off the indicating light is still on dimly and there show low 92 volt on load side.


There is a short. The timer mechanism is mechanical, so the problem is not failed electronics.
The WH21 is for 240 volt circuits, so it has 2 hot wires and 1 ground from the breaker box. Only one hot line to the water heater is turned off, but both lines are attached to screw terminals at timer.
To see if the problem is a shorted element or shorted wire in water heater, disconnect hot leads to water heater one at a time, and then test. Then disconnect ground wire from water heater and test again. Then disconnect all wires to water heater, and test again.
If the problem is in the water heater, search for troubleshooting steps on internet. Focus on testing elements.
If the problem is not in the water heater, then a frayed wire on back of timer is next checkpoint. The timer motor is the final suspect. You can detach the timer motor from the housing, and test for stray voltage. Intermatic WH21 is inexpensive to replace.

Aug 23, 2010 | Electric Intermatic Inc Wh21 Water Heater...

1 Answer

Wiring a wh40 intermatic timer to a sears hot water heater


Shut off breaker to you water heater. STILL TEST FOR VOLTAGE BEFORE YOU TOUCH ANY WIRING. The 3 wire that go to you water heater disconnect them. You are going to install them to your WH 40 timer.
The wires that you disconnected will now go to terminals: Black to Terminal 1 & White To Terminal 3, The Ground copper wire will go to the ground terminal should be a green screw.
You will have to buy some 10/2 wiring to go from your timer to your water heater. You can buy it by the foot at Lowes. Figure how much you will need.
With the new 10/2 wire install the Black to terminal 2 & White To Terminal 4, the ground wire will go to the ground screw with the other ground wire.
Wiring that went to terminals 2 & 4 will be installed to you water heater, the same way when you disconnected them. Set your timer clock and your done. Turn breaker back on!


Dec 28, 2008 | Intermatic WH40 - Water Heater Time Switch...

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