Question about RTO Intermatic T101P201 Timer Switch Two Circuit Time Switch 110V

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Intermatic t101p201 gets stuck when timer should

The timer gets stuck and won't kick on. It jams tne timer and then pops the breaker. It just needs a little extra zest to push it on. How can this befixed or adjusted. I don't want to replace the whole timer. Everything else works fine

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Interesting why the timer motor blew the breaker. with this size, less than 1/20 hp, the winding would have easily burnt out. You must have this circuit already load to the max. At this point, I would say that the motor is toast. you can get the guts (motor and switches combined) online from intermatic or order it from your local electrical supply distributor.

Posted on Jun 06, 2010

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Intermatic T104 timer manual switch stuck

To remove timer from enclosure, there is thumb spring located top inside box. Push up on spring, hold onto timer dial, tip outward and lift upward.
Disconnect power before removing mechanism.
Override lever should snap back and forth crisply, and turn pump ON-OFF.
If override lever is not turning pump ON-OFF, then check that you have 240Volts across terminals 1 and 3. Check that timer dial is rotating and keeping good time.
Then move override lever to ON position and check if you have 240Volt across terminals 2 and 4. These terminals are Hot when pump is supposed to be ON.
Reset circuit breaker, may be tripped off on one leg, listen for crackling sound of loose breaker, use nose to smell for burning, tighten wires on breaker, move wires to another same-size circuit breaker.
Copy following links for troubleshoot resources:

If timer is not functioning, then buy clock motor and trippers.
OR. You can buy the T104M mechanism-only, and snap into existing enclosure.
OR. It may be cheaper: Buy the whole T104 and snap out of new enclosure and install mechanism into existing enclosure.

Jul 19, 2012 | Intermatic T104 24h 208-277v Mechanical...

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Model 4001-ov trips the circuit breaker.

Assuming you have Paragon 4001 40 amp 120Volt timer
By-pass the timer so only pool pump is connected to breaker.
To do this, move wire from terminal 2 and connect to terminal 1.
If breaker no longer trips, then replace timer with Intermatic T101
Crossover wiring: Paragon terminal 1 goes to Intermatic terminal 1.
Paragon terminal 2 to Intermatic terminal 2.
Paragon terminal 3 to Intermatic terminal A
If breaker keeps tripping after bypassing timer, then tighten wires on circuit breaker and test again.
If breaker keeps tripping, then move wires to another same-size breaker.
Breakers trip when they sense overheating.
If motor is causing problem, you might need electrician to track down source of overheating.

Jun 19, 2012 | Paragon 4001-0G Defrost Timer

1 Answer

After a bad lightening storm, our Intermatic HB88RC timer is stuck on zeros and won't budge for setting the clock or programs. Is there a way to reset it and start over? We've unplugged it for a...

Open following link to identify timer, download manual and see replacement product for discontinued HB88

Electronic timers are susceptible to power surge, even nearby surge that gets picked up by household wires or internal timer parts. All wires carry current when exposed to nearby current. Same principle when cell-phone recharge transformer converts 120V to lower volts-amps without wires directly connected.

HB88 timer is reset by removing/replacing AA battery.
If reset does not restore functionality, then timer has gone bad.

Whole house surge protector can protect circuit breakers and electronics that are not connected to typical power-strip surge protector. For example HVAC unit and electronic water heater controls are not protected from surge. Household items that are connected to co-ax cable also need separate protection.

Jul 24, 2011 | Intermatic 10A OUTDOOR TIMER

1 Answer


1) T101P201 timer does not have a separate manual yet

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.

3) Fireman switch wiring:
T101P201 has a fireman's switch that wires directly to the pool heater thermostat.
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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Jun 16, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

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No power to box. TEST switch seems to be jammed as well. No breaker switches are tripped. Any help would be fantastic! Thanx!

T-104R is raintight 240V timer.

1) No power to box:
a) Test timer for voltage: test screw terminal1 and screw terminal2 to bare copper wire to see if there is some voltage. See T-104 wiring.
b) Your 240V breaker can be loose on the busbar, and not be tripped. Jiggle it a bit and see if you hear crackling. Click the breaker switch all the way over and then snap it back.
c) The 240V breaker can have one wire loose, so only 120V arrives at timer.
In this case, the timer voltage can appear dead on some terminals, or live on some terminals, but the 240V clock motor inside timer and 240V Load will not work.
d) The loss of power is one thing, but a power loss will not jam the manual override on your timer unless there was some high-voltage event like a lightning strike.

2) Test switch jammed ... that must mean manual override is jammed
Lift and rotate dial so trippers are away from on-off lever, then try manual override again. If manual override was just stuck on a tripper, you need a new T-100 series 240V clock motor. It requires a small star-screwdriver to change clock.

3) If the manual override is bad, then timer is bad. Buy a new T-104 timer mechanism and install the mechanism without changing boxes. All T-104 timer mechanisms will snap into any other T-104 box.


If this doesn't get you going, add a comment at bottom of page, and it will automatically send me an e-mail and then I will help further.

Oct 26, 2010 | Intermatic T104R 208-277Volt 40-amp Timer...

1 Answer

Where do I attach wires from heater (fireman switch??)

The Fireman Switch wires will attach to a micro switch inside yout timer housing ... it is a separate switch on a attached cam. Takes a special timer.

May 23, 2010 | Intermatic Two Circuit Mechanical Time...

1 Answer

GE Digital Time Switch (15132) for basic landscape lighting

Leave the breaker off, remove the wires from the timer and just connect them. then turn the power on. Unless you have a short somewhere, the lights should come on. What you have just done is made the breaker your switch. If the breaker kicks you know to keep looking for a short as it is not the timer. Regards, Joe

Jan 04, 2010 | Intermatic Inc. EJ500C Digital Wall Switch...

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