Question about Electric Intermatic Wh 21 Water Heater Timer

1 Answer

If the timer light is on (light is red) does that mean the timer is ON or OFF?

This is an old timer and we are not sure by the instructions on the inside door if the water heater is on or off when the red light is on.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Electric Master
  • 5,391 Answers

Copy following link for Wh21 manual, troubleshoot walk-thru, and replacement tripper identification.
The red light is a power indicator, and this indicates that timer has 240Volt (208-250Volt) power available, but does not indicate if water heater is ON or OFF.
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-WH21-timer.html

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

Posted on Aug 13, 2012

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

The heaters instructions say to open the heater, but i don't know how.


1) For real?
How can we answer the question without model number, brand and type water heater?
Is this a boiler? Or tank-type heater. Is the thing 2 years old or 12 years old.

2) Look on label on side of tank. Include all information shown on label.

3) Attach a photo so we can see the problem more clearly.

4) Call service technician or plumber since this is a gas appliance.

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

Dec 31, 2012 | Rheem Water Heaters

1 Answer

The black wire on the inside panel sparks


You posted 2 questions.
Add a comment to clarify problem
One question says black wire is sparking is inside water heater, and this question says black wire is sparking inside the panel and is posted under WH40 water heater timer.

If wire is sparking, then it is not attached firmly, or wire is not attached correctly, or there may be too many amps drawn across the terminal.
WH40 has 40 amp terminals and will handle all residential water heaters.

Open following links for instruction how to avoid sparking, and avoid fires inside timer:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html#fire
Open following link to see how to apply wire nut:
http://waterheatertimer.org/How-to-twist-electric-wire.html

Oct 08, 2011 | Intermatic WH40 - Water Heater Time Switch...

1 Answer

My timer for my water feature looks like your Intermatic T101R3 timer. I do not have an instruction manual. Can you e-mail me some simple instructions for using this so I won't get charged an...


T101R3 is outdoor pool timer with fireman's switch.
Some are double-pole, some are single pole, some are 240V and others are 120V.
They each look like the other so eyeball identification is not enough information.
The model number should be inside door of timer.
http://www.poolandspacontrols.com/products/mechanical%20time%20switches/pool%20and%20spa%20time%20switches.aspx
http://www.intermatic.com/products/timers/mechanical%20time%20switches/24%20hour%20dial.aspx
http://www.intermatic.com/customer%20service/instruction%20manuals.aspx

I have been unable to locate manual specific for these products, and I have looked.
I was looking yesterday for this instruction manual.
Some wiring diagrams appear on following page, but again it depends on your specific model
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#T100

The T101R series is designed to control pool pump and pool heater.
Fireman's switch automatically turns off pool heater 20 minutes before pool pump is scheduled to turn off.
So you set the trippers on dial, and then the fireman's switch does the rest automatically.

Add a comment with in-focus photo of inside of timer door and I can put together all the information and simplify instructions. Put your digital camera in 'macro' with the flower-symbol to take close-up photos. Photo has to be in focus so I can read information and see wiring schematic.
http://www.fixya.com/support/r6568559-post_photograph_fixya_questions_answers

Apr 20, 2011 | Hardware & Accessories

1 Answer

Lost wiring instructions for my woods water heater timer. What wires attach to bus bar


Timer model is usually located inside the door panel:

1) Open following link to access manual with wiring diagrams.
http://waterheatertimer.org/Woods-timers-and-manuals.html#Boxtype

2) Example manual shows different wiring diagrams:
http://waterheatertimer.org/pdf/Woods-59396-59399-manual.pdf
If you have timer with 8 terminals, and ordinary 240V water heater, then use diagram on bottom right.

3) Woods timers are wired identically to GE 15207, except your model might not have dip switches.
http://waterheatertimer.org/How-to-wire-GE-15207-timer.html

4) Busbar usually refers to a long metal bar where many wires connect to same pole. For example neutral busbar inside breaker box has 20 or 30 wires connected to it, and all are connected to Neutral wire from power pole.
http://waterheatertimer.org/See-inside-main-breaker-box.html
http://waterheatertimer.org/B220C.html

5) 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.

Mar 05, 2011 | Kitchen Ranges

2 Answers

I want to add an under-counter auxiliary water heater to my 15A dishwasher circuit. I need to install some sort of relay to cut out the water heater when the dishwasher is being run, to avoid overloading...


If I understand correctly you have 15 amp breaker with 14gauge wire.
Total watt capacity of 15 amp breaker is recommended at 80% rated load = 12 amps

You want to connect two appliances to same 15 amp line.
1) You have 6 amp Dishwasher that draws 720 Watts
2) You have under the counter water heater with 1500 Watt element that draws 12.5 amps.
3) Combined load is 18.5 Amps and 2220 Watts, approximately
So you do not want dishwasher and water heater turned on at same time.
Makes good sense.

Solutions:
> Easiest thing would be to put water heater on ordinary wall switch located inside sink cabinet.
Back when garbage disposals first came out, garbage disposal switch was inside sink cabinet. You opened cabine door and flipped the switch.
> Next solution would be to put water heater on a timer located under the sink. There are different timers. In-wall timers and box-type

In-wall timer would need relay/contactor
A battery operated timer like the ST01C would not need to be reset after power outage
http://waterheatertimer.org/Programmable.html
Here are instruction pages for selecting and installing the relay/contactor.
http://waterheatertimer.org/H230A.html
http://waterheatertimer.org/Install.html
Add a comment any time.

Box-type timer like T101 120Volt timer. This timer needs no relay/contactor.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101
Timer needs to be reset after power outage, but operates on ordinary 120V power, and is simple to install.

> There is no easy way to wire the dishwasher and water heater together so one is certain not to operate when other is turned on. There are likely electronic control panels for that project. But since you know the hours when dishwasher is likely to be ON, then set water heater timer to turn OFF during those hours. Water inside tank will stay hot for a couple hours, so there is no loss.

It sounds like you are a solid electrician.
If needed, add comment any time for more assistance.

Dec 14, 2010 | Rheem 2.5 Gallon Electric 120V Water...

1 Answer

Don't know what is it used for,and how it operates?I don't have any instructions for it.


You posted under T101 timer.
Most box timers have model number and instructions pasted on inside of door.
Instructions can seems a foreign language sometimes.

If your timer is different than T101, then add a comment with timer number.
I have extensive files on timers.

Box timers are generally used for heavy amperage loads like outdoor lights, swimming pool pumps, water heaters, parking lot lights and lighted outdoor signs.
They are surface mounted near breaker box, or in attic or basement, or garage.
Box timers are used in schools to ring bells, and inside factories to run processes and fans.
Some are complicated electronic devices used to control machines with one second precision.
Mechanical box timers are noisy when turning on-off, so are generally not installed in living area of house.

T101 timer is least complicated of any timer.
It is used for ordinary household 120V circuit.
Timer has 120Volt clock motor, and controls 120Volt circuit.
For example 120Volt water heater, or 120V grow lights, or aquarium, or any application up to 2 horsepower, for example timer can be located inside garage to control outdoor lights.
T101R is raintight outdoor box, with rubber gasket on door that seals tight when closed.
Raintight boxes are installed outdoors to operate 120Volt spas and pool pumps.
When box timer is rated for indoor, there is no rubber gasket on door, and that box is called NEMA 1 enclosure.
My local Lowes sells T101 T103 T104 > and each is for slightly different purpose and each wires differently.
Link below shows wiring and manuals for T100 series timers.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

Here's how T100 series timer works:
Lift and rotate yellow dial until current time lines up with silver pointer.
Clock motor rotates dial as time passes.
Clock motors are accurate for years, but current time has to be reset after power outage.
ON-OFF trippers are placed on outer edge of dial.
Trippers push a lever, and lever turns circuit on-and-off.
ON tripper pushes lever one direction.
OFF tripper pushes lever opposite direction.
Each time lever is pushed, manual-override lever clicks back and forth with audible sound.
geno_3245_125.jpg

Dec 01, 2010 | Intermatic T101 - 24 Hr. Dial Time Switch...

1 Answer

Need instructions for T.R.A.C. dial hot water heater timer - not sure whether pins pushed in = off and out = on or vica versa


I thought I knew every water heater timer possible.

Never heard of T.R.A.C.
Is that a European timer?

Here's what to do. Set the pins one direction or the other. Start with cool water in tank, so it will turn on for sure when power is applied. Turn on power. Put your ear against water heater. Listen for bubbly-fizzing sound that tells you water heater is on.

Check label on side of tank to see voltage & wattage of tank. Watt rating for dual element tanks is same as element wattage, since only one element is ON at a time. Generally, 240V electric tanks are 3500, 4500, and 5500 watts. That is 16 amps, 21 amps and 23 amps. Make sure your timer has amp rating to match water heater.

Oct 06, 2010 | Hardware & Accessories

1 Answer

The ice maker has stopped working. The light inside is flashing red. I checked the manual and nothing is stated about the red light flashing in the troubleshooting section. I've checked the lines and...


this sounds like a control board circuit problem..but first remove perishables and defrost freezer ..turn off or un plug..leave refr door closed..freezer door open..if you have lots of water while defrosting you almost cirtainly have froozen the evap coils solid..freezer cannot work like this..after defrost..plug in and see if temperature returns to normal..if it does it won't last indefinately..your probably have a bad defrost timer and/or evap heater gone bad

Apr 22, 2010 | Refrigerators

1 Answer

Timer motor does not turn


make sure you purchased nthe correct timer and not a 220 volt timer for water heater use , you could still turn on and off manually but you would need 220 volt to run timer may sound silly but i have seen it several times before , look on the door plate and be sure it is a 120 volt 1 phase tmr motor

Jan 04, 2010 | Intermatic WH40 - Water Heater Time Switch...

2 Answers

Homark semi integrated dishwasher 01/02-800270


seal gone on bottom of the door

Sep 15, 2007 | Dishwashers

Not finding what you are looking for?
Electric Intermatic Wh 21  Water Heater Timer Logo

627 people viewed this question

Ask a Question

Usually answered in minutes!

Top Electric Hardware & Accessories Experts

Marvin
Marvin

Level 3 Expert

85223 Answers

Overmod

Level 2 Expert

20 Answers

ray gallant

Level 3 Expert

66504 Answers

Are you an Electric Hardware and Accessory Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...