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Eh40 terminal 4 of the load wire does not have any power. I have checked and rechecked everything I could and still will not work. For now I bypassed it but is there any other way around this to hook up so it's programmable?

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

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gotgeek2
  • 565 Answers

SOURCE: after hooking up line wires to motor and load

That is correct.

LINE 1 (incoming hot wire from source or circuit breaker) connects to terminal #1 then jumps over to terminal #3 using the _same_ gauge wire.

LINE 2 (other incoming hot wire from source or circuit breaker) connects to terminal #2 then jumps over to terminal #5.

The LOAD (outgoing to water heater) then connects to terminals 4 and 6.

Posted on Aug 11, 2010

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SOURCE: My EH40 is not supplying

I have an EH 40 sitting in front of me right now.
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html
The link above shows correct 240V water heater timer wiring for EH40
Link below shows an overview picture of EH 40 connected to 240V water heater
http://waterheatertimer.org/images/EH40-water-heater-circuit-5.jpg
http://waterheatertimer.org/240-v-water-heater-circuit.html


EH40 has a 240V clock.
Terminals 1 and 2 send power to the 240V clock
Power to the clock terminals do not pass through timer to any other terminal

How to wire EH40 for 240V
240V line has 2 hot wires from breaker box.
Lets call these wires Hot1 and Hot2
These wire are interchangeable on 240V circuit
Hot1 connects to terminal 1 with a jumper to terminal 3 (or connect to 3 and jumper to 1)
Hot2 connects to terminal 2 with a jumper to terminal 5 (or connect to 5 and jumper to 2)

240V circuit has 2 wires going to the Load
Let's call these Load1 and Load2
These wires are interchangeable on 240V circuit
Load1 connects to terminal 4
Load2 connects to terminal 6

If the timer is still not working, go back to the breaker and test if it is delivering 240V to the circuit.
If breaker is bad on one leg, then the circuit can test with live power, but the 240V appliance will not work.
240V circuit requires both legs of 240V before circuit is complete.

Posted on Oct 25, 2010

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1 Answer

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

When power is applied load one reads o.k. load two reads zero why?


You posted under EH40 240Volt programmable timer.
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html

If I understand correctly, you are testing the terminals when timer turns ON?
Test shows 120V between terminal 4 and ground wire.
Test shows 0 volts between terminal 6 and ground wire.

Solution:
Test terminal 3 to ground -and- test terminal 5 to ground and make sure each tests 120V.
Test terminal 3 to terminal 5 for 240V.

If terminals 3 and 5 test correctly, but terminal 6 never has power, then relay inside timer has gone bad.
Contact Intermatic about 1 year limited warranty
http://www.intermatic.com/customer%20service.aspx

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 28, 2011 | Intermatic EH40 - Electronic Water Heater...

1 Answer

After 7 years working properly, the event button has stopped working. There is no way to start the load in manual, or to change the program... What can I do?


You posted under EH40 Intermatic programmable timer.
EH40 Manual:
http://waterheatertimer.org/pdf/eh40-manual.pdf

1) EH40 uses size A battery. Replace battery.
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html#Battery
2) Reset the timer: Press and hold reset button for several seconds
3) Contact Intermatic because they are aware of specific problems with specific timers
http://www.intermatic.com/customer%20service.aspx
4) Other folk have reported EH40 and EH10 last about 3 years.
EH40 has 1 year limited warranty.
I test timers: 7 years is reasonable run for inexpensive electronic time switch.
5) For longer lasting timer, consider Next Generation: battery is replaced every 8 years
http://www.intermatic.com/products/timers/electronic%20time%20switches/next%20generation%20time%20switches.aspx

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

Feb 28, 2011 | Intermatic EH40 - Electronic 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

Need diagram showing a/c power and switched termanels


You posted under EH40 Intermatic timer.
The EH40 has a 240V clock
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html

The terminals are numbered 1 2 3 4 5 6
The 240Volt clock is terminal 1 and 2

The first HOT wire from breaker connects to terminal 1 and 3
The second Hot wire from breaker connects to terminals 2 and 5

The wires to Load connect to terminals 4 and 6

If you need more help, add a comment and I will help

Nov 01, 2010 | Intermatic EH40 Energy Controls -...

1 Answer

My EH40 is not supplying power to the water heater. I hooked the power line in to posts 1 and 2 and I hooked the load out to posts 4 and 6. When I use my power checker it reads no power to posts 3,4,5,...


I have an EH 40 sitting in front of me right now.
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html
The link above shows correct 240V water heater timer wiring for EH40
Link below shows an overview picture of EH 40 connected to 240V water heater
http://waterheatertimer.org/images/EH40-water-heater-circuit-5.jpg
http://waterheatertimer.org/240-v-water-heater-circuit.html


EH40 has a 240V clock.
Terminals 1 and 2 send power to the 240V clock
Power to the clock terminals do not pass through timer to any other terminal

How to wire EH40 for 240V
240V line has 2 hot wires from breaker box.
Lets call these wires Hot1 and Hot2
These wire are interchangeable on 240V circuit
Hot1 connects to terminal 1 with a jumper to terminal 3 (or connect to 3 and jumper to 1)
Hot2 connects to terminal 2 with a jumper to terminal 5 (or connect to 5 and jumper to 2)

240V circuit has 2 wires going to the Load
Let's call these Load1 and Load2
These wires are interchangeable on 240V circuit
Load1 connects to terminal 4
Load2 connects to terminal 6

If the timer is still not working, go back to the breaker and test if it is delivering 240V to the circuit.
If breaker is bad on one leg, then the circuit can test with live power, but the 240V appliance will not work.
240V circuit requires both legs of 240V before circuit is complete.

Oct 24, 2010 | Intermatic EH40 - Electronic Water Heater...

1 Answer

After hooking up line wires to motor and load wires from water heater to load terminals,diasgram shows jumper wires from terminbal 1 to terminal 3 and terminbal 2 to tertmninal 5. voltage is 240.thank you ...


That is correct.

LINE 1 (incoming hot wire from source or circuit breaker) connects to terminal #1 then jumps over to terminal #3 using the _same_ gauge wire.

LINE 2 (other incoming hot wire from source or circuit breaker) connects to terminal #2 then jumps over to terminal #5.

The LOAD (outgoing to water heater) then connects to terminals 4 and 6.

Aug 09, 2010 | Intermatic EH40 - Electronic Water Heater...

1 Answer

1998 buick park ave. rear window defroster not working. fuse is good, has anyone replaced the black box located next to rear window where element plugs into along with the antenna. element on window is not...


Rear Defogger Inoperative, But Heated Mirrors Operate Correctly
1. Connect scan tool. Turn ignition switch to RUN position. Turn rear defogger on. Using scan tool, display BCM
outputs. If rear defogger is being requested on, go to next step. If rear defogger is not being requested on, go to
step 10).
2. Ensure ignition switch is in RUN position. Remove rear defogger relay from rear junction block, located on center
right rear of passenger compartment, under rear seat. Connect test light between ground and defogger relay
harness connector terminal F3 (Brown wire). If test light illuminates, go to next step. If test light does not
illuminate, go to step 11).
3. Connect test light between ground and defogger relay harness connector terminal A2 (Red wire). If test light
illuminates, go to next step. If test light does not illuminate, go to step 12).
4. Connect test light between defogger relay harness connector terminals A2 (Red wire) and B3 (Purple wire). If test
light illuminates, go to step 13). If light does not illuminate, go to next step.
5. Disconnect rear defogger positive and negative feed bus connectors. Connect a jumper wire between defogger
relay harness connector terminals F3 (Brown wire) and A4 (White wire). Connect test light between ground and
positive feed bus connector terminal "A" (Black wire). If test light illuminates, go to next step. If test light does not
illuminate, go to step 8).
6. Connect test light between positive feed bus connector terminal "A" (Black wire) and negative feed bus connector
terminal "B" (Black wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 9).
7. Repair open in Black wire between rear defogger and ground. Recheck system operation.
8. Repair open in Purple wire between rear junction block and heated backlight antenna module. Recheck system
operation.
9. Check for proper terminal contact at rear defogger connectors. Repair as necessary. Recheck system operation.
10. Check for proper terminal contact at BCM. If terminal contact is okay, replace BCM. Recheck system operation.
11. Repair open in Brown wire between rear junction block and instrument panel junction block. Recheck system
operation.
12. Repair open in Red wire between rear junction block and underhood junction block (located in right front corner of
engine compartment, between battery and strut tower). Recheck system operation.
13. Connect test light between defogger relay harness connector terminals F3 (Brown wire) and A4 (White wire). If
test light illuminates, go to next step. If test light does not illuminate, go to step 16).
14. Reinstall defogger relay. Disconnect BCM 32-pin Pink connector C2. BCM is located behind right side of instrument
panel, near rear of glove box. Using DVOM, check voltage between ground and BCM harness connector C2
terminal A3 (White wire). If any voltage is present, go to next step. If no voltage is present, go to step 17).
15. Repair open or short to ground in White wire between rear junction block and BCM. Recheck system operation.
16. Check for poor connection at defogger relay terminals. If connections are okay, replace defogger relay. Recheck
system operation.
17. Check for proper terminal contact at BCM. If terminal contact is okay, replace BCM. Recheck system operation.

Feb 25, 2010 | 1998 Buick Park Avenue

2 Answers

How do I wire the intermatic Eh40 hot water heater timer?


http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/eh10%20-%20english.ashx
Page 7. crossing wires are not connected. connections made only at screws.

4 & 6 go to water heater.
3 & 5 connect to power

small jumper between 1 & 3
second small jumper between 2 & 5

Jun 27, 2009 | Intermatic Electrical Supplies

3 Answers

How to wire an intermatic eh40 water heater timer


Note that the "IMPORTANT!" paper insert that came with my EH40 shows one small jumper between 1 & 5 and the second small jumper between 2 & 3 (and, of course, the jumpers aren't really long enough to reach from 1 to 5!). Jumping 1&3, 2&5 makes more sense and matches the labeling on the plastic insulator piece...

Jun 21, 2009 | Intermatic EH40 - Electronic Water Heater...

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