How to program timer? - Grundfos The UP1510B5ATLC 125th HP 1 Speed Bronze 12" Sweat Housing1

Usually timer programs can be edited by entering the program mode and scrolling through choices....
Some timers do not allow you to remove a program... and you have to reset timer and reprogram to completely remove program
ST01 timer has step-by-step for deleting program on page 2 of manual ... on right side of page... under changing program times... deleting ON-OFF setting
http://waterheatertimer.org/pdf/Intermatic-st01c.pdf
http://waterheatertimer.org/ST01C-program.html

Gene

Water Heater Timers Save Money

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This is old timer since it still uses batteries.
Replace AAA batteries.
This timer also has preset programs. User cannot change preset programs which is the strangest thing I've ever heard about a timer, except vacation timers. It appears the timer turns on-off 6 times each day for no apparent reason that shows in manual.
Moreover, the timer has very complex instructions, whereas other timers are far easier to program.
Buy another timer.

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LW28080 is NCC brand digital power center.
Copy following link to identify timer and download manual
http://waterheatertimer.org/Woods-timers-and-manuals.html#0050024
Programming should start on the day you selected for Program 1 ON. So if Tues was selected, timer should start Tuesday.

Use paper clip, and push in Reset button for 2 seconds. Repeat. Always reset digital timers before programming to clear memory glitches.

Plug timer in for 10 minutes to charge battery.
Be sure to set current time with correct day, hour am-pm and minute.
Each ON program requires OFF program
Set program 1 ON and then set program 1 OFF.
Make sure selected day(s) of operation match for both ON and OFF settings.
Check am-pm conflicts in programming.
Avoid 12:00, to avoid am-pm confusion. Use 12:01 or 11:59
Avoid programming overlaps and conflicts that cause timer not to function as expected.

When programming is finished, press current time button to return to current time.
It appears timer is ready for programmed operation at this point.
Install Mi-MH battery that comes with timer.
Do not exceed watt rating.
This timer comes with 1 year limited warranty and can be expected to last 1 or 2 seasons, and probably quit season 3.
1-800-730-3707

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Unknown if this is new ST01C timer, or older timer that worked before and stopped working.
Add a comment with more information if needed.

Timer can be defective. Battery can be low. Wiring is wrong. Timer programming has overlaps and conflicts. Program 1 is set but program 2 is not set. No programming is set. Short circuit on lights.

I suggest change battery and reset timer, then reprogram timer.
Write out schedule beforehand to avoid conflicts and overlaps.
Program 1 is ON and program 2 is OFF. Program 3 is ON and program 4 is OFF. etc.
Open following link for re-set and programming illustrations, plus battery replacement and wiring diagrams:
http://waterheatertimer.org/ST01C-program.html

I don't have answer for defective timer. Buy another timer if everything below checks out:
59018 7-day timer has limited 1 year warranty, and appears to be made by Tork
Timer is for 120Volt single-pole only.
Rated for 1000 watt tungsten, 8A ballast, 1/4 HP
Push reset button with toothpick > not necessary to press-and-hold other button to accomplish reset.
After reset, 12:00 am Monday should display.
Programs are deleted. Reprogram timer.

To check, change and delete specific programming, press PROG key until selected program displays, and then set new programming >>> or press-and-hold MODE button and press PROG button again to delete selected program.

Timer has non-replaceable 30-day carryover battery and does not lose programming after power outage, and will retain programs until battery is depleted.

Review wiring:
Hot to timer black.
Neutral to timer white.
Load to timer red.
Ground to timer green.

Lights will blink if timer red and timer white are connected to load together.
Timer will not function if timer black and red wires are reversed. Display will not show.

http://waterheatertimer.org/Woods-timers-and-manuals.html#59028

Hi

Programming:
Set present time
Then set ON time for program 1
Set OFF time for program 1
Then set ON time for program 2
Set OFF time for program 2
Most timers will not function if there is a conflict in programming > for example Program 1 says ON at 6 and OFF at 7 and Program 2 says opposite or has overlapping times
When events are set, press SET once > this will put timer in RUN mode

If manual override works, and you set programming correctly, but timer does not carry out instructions, I guess the timer is no good.

Intermatic has 24 hour timers with 2 on-off per day
http://www.intermatic.com/products/timers/consumer%20indoor%20timers/lamp%20%20appliance%20timers.aspx
Intermatic has 7-day digital timers (all digital timers today are 7 day where you select the day that each program works)
http://www.intermatic.com/products/timers/consumer%20indoor%20timers/digital%20timers.aspx


Thanks.

DT121 Manual
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/dt121c%20-%20english.ashx

All Intermatic manuals
http://www.intermatic.com/customer%20service/instruction%20manuals.aspx

Intermatic does not show DT11
Intermatic shows the DT121 is no longer available

If the display shows and you can set programs, then the battery is good.
Does the manual override work? This indicates whether the timer on-off switch operates.
If manual override does not work, then I discovered that timers are no longer any good

Programming:
Set present time
Then set ON time for program 1
Set OFF time for program 1
Then set ON time for program 2
Set OFF time for program 2
Most timers will not function if there is a conflict in programming > for example Program 1 says ON at 6 and OFF at 7 and Program 2 says opposite or has overlapping times
When events are set, press SET once > this will put timer in RUN mode

If manual override works, and you set programming correctly, but timer does not carry out instructions, I guess the timer is no good.

Intermatic has 24 hour timers with 2 on-off per day
http://www.intermatic.com/products/timers/consumer%20indoor%20timers/lamp%20%20appliance%20timers.aspx
Intermatic has 7-day digital timers (all digital timers today are 7 day where you select the day that each program works)
http://www.intermatic.com/products/timers/consumer%20indoor%20timers/digital%20timers.aspx

A conflict in programming, or program overlap will cause timer to ignore programs. Write out a schedule before programming.

If you reset and re-programmed timer, that is the final answer for the EJ500 and ST01C intermatic battery-operated timers.

The timer comes with a 1 year limited warranty. It doesn't last forever.

If timer is old, maybe it's time for a new one.
If timer is new, then take it back