I have intermatic TN311 MODEL TIMER IDK HOW 2 WORK I WANT IT TO COME ON AND OFF FOR 15 MIN EVERY HOUR FOR 12 ORS A DAY IS THAT POSSIBLE AND HOW

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PROGRAMMING:
The 24 hour model has trippers of 15
minute increments, and an AM/PM indication on the outer
dial. The 7 day model has trippers of 2 hour increments. The
outer dial shows the 7 days of the week and AM/PM for each
day. Push the captive trippers outward for the time period(s)
that the load is to be on (Normally open contacts closed) http://waterheatertimer.org/pdf/Intermatic-Grasslin-gm40.pdf

Intermatic sprinkler timers, 12 hour on-off is possible plus day skipper option, and rain gauge connection etc::
http://waterheatertimer.org/How-to-wire-Intermatic-sprinkler-timers.html
More sprinkler timers:
http://waterheatertimer.org/Woods-timers-and-manuals.html#sprinkler
Link above includes sprinkler timers on market today

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

Omron:
https://www.ia.omron.com/support/
http://waterheatertimer.org/pdf/h5cx_sell-sheet-wiring.pdf

I believe you have 230Volt 50 Hz electric power.
Omron is rated 50-60 hz
US timers are rated 60 Hz.
Maximum load on Omron timer is 5amp at 230 volt
Timer should be connected to 2-pole contactor (relay) instead of directly connected to pump.
http://waterheatertimer.org/images/contactor-drawing.gif

Does Amazon sell percentage cycle timer in your country?
A cycle timer makes one full revolution each hour, or 4-hours, or 12 hours. Then percentage is set for 8% for 1 hour cycle.
Contact Intermatic and ask if they have 50 cycle percentage cycle timer, or ordinary cycle timer in 50 Hz.

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

Easiest solution is to buy two separate timers.

GE does not have 2 channel plug-in timer. Nor does Woods, UPM, Swilight, Sylvania, Tork, etc etc.
http://waterheatertimer.org/GE-timers-and-manuals.html

Zilla has a two channel power strip where one channel is for 12 daytime hours and 1 channel for 12 nighttime hours. The yellow outlets power daytime hours and blue for nighttime. You can adjust current time so the hours can be whatever, but the 2 channels are strictly 12 hours each and do not overlap
http://waterheatertimer.org/GE-timers-and-manuals.html#zilla
Your time schedule doesn't fit zilla

You need a 2-channel timer which takes you into more expensive territory ($150-$300), or just buy two separate timers since each load has to operate independently.

Intermatic make 2 and 4 channel timer:
http://www.intermatic.com/products/timers/electronic%20time%20switches/7-day%20electronic%20time%20switch.aspx

What timer is this?
http://www.electricsupplyonline.com/prod/intermatic-springwound_timers.php

Sounds like a defective timer.
I have three Intermatic spring wound timers that are used every day, and never have that problem.
After all, how does the timer 'know' when it's set on the 'hour' since the dial does not have stop points at specific times?

Add a comment for more free help.
Also take advantage of fixyas phone service.
For a price, fixya expert speaks with you over phone while you work on timer.

http://www.intermatic.com/products/timers/consumer%20outdoor%20timers/digital%20timers/hb88rc.aspx

HB88RC is 7-day plug-in digital outdoor timer that uses AA battery installed on back of timer to power the display.
People write to fixya frequently report Intermatic timer stops working after replacing battery.

To check if your timer is still functional:
Press and hold clock button.
Press Day button until current day shows in display.
Press Hour until current hour shows in display
Press MIN until current minute show in display
Release clock button.

If current time shows in display, then timer is probably still good.

To set programs:
step 1) Press PROG button until 1 and ON show on display.
This is program1 ON.
Press day button until choice of days shows for program1 ON
Press hour until hour for program1 ON shows
Press MIN until minute for program1 ON shows.

step 2) Press PROG button until 1 and OFF show on display
This is program1 OFF.
Press day button until choice of days shows for program1 OFF
Press hour until hour for program1 OFF shows
Press MIN until minute for program1 OFF shows.

step 3) Press PROG button until 2 and ON show on display
Repeat steps above to set program2 thru program7

step 4) When programs are set, press CLOCK button to return to current time

step 5) add a comment for more help

Paragon 8145-20 is a 240V defrost timer
It is probably not best choice for water heater timer
Timer initiates defrost cycles each 4 hours.

A water heater timer should have more scheduling options.
-For example estimates show average run-time for water heater is 3 hours per day, depending on incoming water temperature, thermostat setting, and number of gallons used.
-To save money using water heater timer, you have to schedule times carefully so water heater runs less than 3 hours per day.
-Now your average electric water heater heats about 20 gallons per hour.
-Average shower uses 4-9 gallons hot water, so water heater needs to run 15-30 minutes (15 summer, 30 winter)
-Average bath uses 12-15 gallons hot water so water heater runs 45-60 minutes
-But lets say you run water heater for 1 hour and make 20 gallons of hot water. Then you take a shower, expecting hot water to remain in tank.
-Here's the problem ... cold water entered the tank to replace the shower water ... and the new cold water is cooling the rest of the tank.
-So a timer means scheduling hot water to match shower and bath events. For example taking shower and bath in immediate succession.
-Or set the timer for each individual hot water event ... for example set timer for 1/2 hour for shower, and later timer turns on 1 hour for bath, or 1-1/2 hr for 2 baths, etc
-> The flexible programming described above is not a characteristic of defrost timers.
I suggest Intermatic WH-31 240V or Intermatic T-104 240V or GE 15207. These are mechanical repeat-24 hour timers with manual override where each day has same schedule.
Digital programmable timers like Intermatic EH40 offer 7-day, 40 event programming. Weekends and weekdays can be different.
To see several box-type timers:
http://waterheatertimer.org/Boxtype.html

Do you mean Intermatic E104C box-type timer? Intermatic does not make E140C

Manual says "refer to programming instructions on time switch door"
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/et104c%20-%20english.ashx

Manual says timer has 8 events per 24-hour day ... 4 'on' events and 4 'off' events. Normal operations, selectors are set to AUTO and RUN.

Using sketchy info from manual about programming:
Set sliders to MANUAL & TIME/SET
Press EVENT for event 1 ... set hour and minute using HOUR & MIN buttons ... this will be 'on' time
Press EVENT for event 2 ... set hour and minute ... this will be 'off' time
Set all 8 events ... 4 'on' and 4 'off'
Move sliders to AUTO & RUN for timer operation

http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler
http://waterheatertimer.org/images/R8806P101C-timer-778.jpg

1) The silver pin goes at 12 midnight on large yellow dial. This pin advances the skipper wheel each day.
2) Turn yellow dial clockwise until current time lines up with silver pointer.
3) Rotate skipper wheel counter-clockwise until today's day (Monday) is in front of 14 arrow.
4) To skip a day of watering, the skipper pin is pushed down for that day. So you want to push down Monday and Tuesday.
For watering, the skipper pins is up for that day. So you want The skipper pin up for Tuesday.
5) The brass trippers are inserted on yellow wheel. Each brass tripper represents 12 minutes of watering for example. So if you want to water for 1/2 hour, then put two consecutive pins on the yellow timer wheel. For 1 hour, put 4 consecutive pins.

Here is a link to the manual. http://www.intermatic.com/products/timers/consumer%20indoor%20timers/digital%20timers/dt620ch.aspx