Once T101 Timer Shuts Off will not turn back on

You have Load and line wires reversed
Terminal A is correct
Switch other two terminals with each other
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

Gene

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Troubleshoot timer:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

120Volt WG1570 clock motor might be going bad, and dial is hanging on tripper because motor is weak.
http://www.amazon.com/dp/B000GAV58K/?tag=waterheaterti-20
http://waterheatertimer.org/How-to-replace-Intermatic-clock-motor.html

Gene
h

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99% chance the Timer wires are reversed ... and line from breaker and line to pump are reversed. Or remotely possibly the circuit is 240V, and somebody changed clock motor on old T101 from WG1570 to WG1573, converting old T101 into T102...
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101
Add a comment with what you discover

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Hi,
The switch for the pool pump does not necessarily run from the same power as the timer motor...

Check for timer motor rated power on the first two terminals that run the timer motor...you may not have proper power there...you may have 120v but not 240 volt...

heatman101

Paragon no longer makes timers or parts, except defrost timers.
Typically, defrost timers are not used for pools.
Open following link to possibly identify timer and tripper part number.
http://waterheatertimer.org/Paragon-timers-and-manuals.html

If you want a new timer for pools, Intermatic makes the T101 120Volt and T104 240Volt:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

If you want T100 series timer with fireman's switch that turns off heater 10 minutes before turning off pump:
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#pool

If you have energy-saving 2-speed pool pump, and thermostat and pool light, then buy P1353 digital timer with enclosure. Enclosure and timer sold together as P1353ME.
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#P1353
http://waterheatertimer.org/pdf/PE100-series-with-P1353-timer.pdf
P1353 is not easy to wire or program for novice, so you can add a comment or repost question on fixya and I will catch it.

If new X2772 tripper hasn't solve problem, it might be time for new timer.
http://waterheatertimer.org/Paragon-timers-and-manuals.html#4000

4001-00 is 120Volt single pole single throw timer in Nema1 indoor enclosure
Wiring terminals 1 2 3
Black Hot wire from breaker connects to terminal 1
Black wire going to load connects to terminal 2
White neutral wires connect to terminal 3

Crossover Intermatic timer is T101
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101
Wiring terminals A 1 2
Black Hot wire from breaker connects to terminal 1
Black wire going to load connects to terminal 2
White neutral wires connect to terminal A

1) T101P201 timer does not have a separate manual yet
http://www.poolandspacontrols.com/products/mechanical%20time%20switches/pool%20and%20spa%20time%20switches.aspx

2) However typical T101P201 timer is ordinary T101 timing mechanism inside Nema 3R beige-colored outdoor plastic enclosure, with additional fireman's switch.
Wiring for T101 shows on following link, and shows on door of timer enclosure:
Check that your timer terminals match illustrations because many timers can fit inside Intermatic enclosures.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

3) Fireman switch wiring:
T101P201 has a fireman's switch that wires directly to the pool heater thermostat.
http://waterheatertimer.org/pdf/Intermatic-Firemans-switch-156T4042A.pdf
If you are not using the timer for pool heater, or if heater does not have connection for fireman's switch, then do not connect fireman switch wires, and just tape them out of the way.

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You might need $45 clock motor for for Tork 1101 120Volt.
http://www.frontierlighting.com/product.jsp?part=10431&process=search&show=&&gdftrk=gdfV22514_a_7c834_a_7c3267_a_7c10431

Open following link to identify timer and see replacement clock motor and trippers:
http://waterheatertimer.org/Tork-timers-and-manuals.html#1101

Intermatic crossover shows T101 timer replaces 120Volt Tork 1101.
Amazon sells new Intermatic timer for $45 with super shipping
http://www.amazon.com/Intermatic-T101-Hour-Dial-Timer/dp/B00002N5FN

Crossover wiring from Tork to Intermatic:
Black wire on Tork L and 1 connect to Intermatic terminal 1
White wires on Tork X connect to Intermatic terminal A
Black wire on Tork 2 connects to Intermatic terminal 2
http://waterheatertimer.org/How-to-wire-T104-Intermatuic-timer.html#T101

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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.

look on the dial to see which way it turns, it has time markings on it and turns the way it needs to in order to keep time, if u pull it out to set it, then u push it back in for it to work and vice versa