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Thread: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

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    Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    About two weeks ago, my Intermatic 24-hour timer stopped turning my pump on and off. If I flipped the manual switch to "Off," the pump would continue to run. I had to flip the breaker switch to turn the pump off. I replaced the entire timer and the same thing is still happening. It doesn't matter what time of day it is, the only way to turn off my pump is to kill it at the breaker. Both timers ran (the gears always moved)

    Does anyone have any idea of what the problem might be? I would appreciate any help that anyone can provide.

    Thanks!

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    JasonLion's Avatar
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Welcome to TFP!

    Do you have a freeze protection feature on your timer? It is quite possible for the freeze protection to get stuck on separately from what the timer is doing.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Welcome to the forum

    What model # timer is it ??
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Thanks for the welcome and the attempt to help. This site is very impressive I'm looking forward to learning much more, once I quit pulling my hair out (little that there is) over this.

    It's an Intermatic T103R 24-hour timer. As I mentioned, I just replaced the whole unit. The gears turn and it keeps accurate time (until I kill the breaker, of course).

    No freeze protection, so that can't be it.

    Thanks again!
    mort

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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Ok then ... I'm pretty stumped as it should shut off by tripping the switch manually and also when an "off" finger on the dial comes around and trips it.
    I'm sure that's why you are pulling your hair out too.
    The 103 looks to be a 120 volt timer. Is the power supply coming out of the breaker box from a single 120 volt breaker ?? It was working fine one day and then it stopped being able to shut off the current to the motor. Was there any electrical or mechanical work done on the components in the system around that time ??
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
    Please help keep the lights on, become a TFP Supporter!

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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Three possible reasons that I can think of.

    1) Contacts stuck closed. Since both timers have the same problem, this is unlikely.

    2) A switch in parallel is bypassing the timer.

    3) Original timer contacts stuck closed. New timer miswired.

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    JasonLion's Avatar
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    A short in the wiring that shorts across the switch could also do it.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Does the pump start back up when you turn the breaker back on? Or does the timer have to be used to start it after the breaker is turned back on? I guess that's what timer runs constantly was referring to.

    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    No service work, tinkering, or lightning strikes that I am aware of. It just stopped shutting off one day.

    Given that and that I rewired it exactly as I found it, I don't *think* that's it. The contacts move the timer switch/lever as expected, but the filter pump doesn't stop. The only way to start/stop the pump is to use the breaker switch, regardless of the position of the timer switch.

    Thanks for all the help and advice so far. It's simple enough to turn on the pump when I go to bed and to turn it off when I get up, but that's kinda why I have a timer in the 1st place, I thought.


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    n240sxguy's Avatar
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Got any pictures? I'm out of ideas.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Divin Dave's Avatar
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    you might check the little trippers on the wheel and make sure they are making contact. Ive read some reviews where the things were a little goofy and had to be "adjusted".
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
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    n240sxguy's Avatar
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Quote Originally Posted by Divin Dave View Post
    you might check the little trippers on the wheel and make sure they are making contact. Ive read some reviews where the things were a little goofy and had to be "adjusted".
    Even if the "trippers" weren't working, the manual switch should shouldn't it? I guess anything is possible.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Divin Dave's Avatar
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    hummmmm... good point! I think it should.

    Quote Originally Posted by n240sxguy View Post
    Even if the "trippers" weren't working, the manual switch should shouldn't it? I guess anything is possible.


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    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Quote Originally Posted by n240sxguy View Post
    Got any pictures? I'm out of ideas.
    You and me both. I won't get to see it in daylight until Saturday. I hope to throw a meter it and test all my connections. Then I'll replace the breaker. Then I'll snap a pic, post it here and drink myself blind.

    Thanks, everyone! I really appreciate it!

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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    I had a neighbor who said their timer wasn't turning the pump off. We found out that their system had a "by pass" switch. It was there to turn on the pump (for the spa use) during the time when the pump was set to be off on the timer.
    chiefwej
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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Quote Originally Posted by chiefwej View Post
    I had a neighbor who said their timer wasn't turning the pump off. We found out that their system had a "by pass" switch. It was there to turn on the pump (for the spa use) during the time when the pump was set to be off on the timer.
    Thank You chiefwej! I was having the same problem as the original poster and your post jogged my brain into gear. My spa has an air switch and the pump is wired into it so that you can start the air blower and the pool pump by using the button at the spa. I just went out, turned on the breaker, went out back and pressed the spa button and presto, the pump shut off.
    Tom
    13' x 30' 17,000 gal IG pool with 6' x 6' 600 gal IG spillover spa. Wet Edge Pearl Matrix Finish in Mediterranean Blue. Pentair Quad DE60 Filter with Pentair Intelliflow VS filter pump and Pentair 3/4 HP pool cleaner pump. Teledyne Laars 400,000 BTU heater, Polaris QT spa blower, Polaris 380 pool cleaner, Circupool RJ-45 SWG, Taylor K-2006 test kit.

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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Quote Originally Posted by tbwill View Post
    Thank You chiefwej! I was having the same problem as the original poster and your post jogged my brain into gear. My spa has an air switch and the pump is wired into it so that you can start the air blower and the pool pump by using the button at the spa. I just went out, turned on the breaker, went out back and pressed the spa button and presto, the pump shut off.
    This is exactly my issue. Seems that when my lovely bride told me she hadn't done anything differently to the pool, she forgot to tell me she and her relatives had used the spa one day. I pressed the spa button and everything went back to normal. I even re-installed the original timer.

    Thanks, chiefwej! Thank everyone! I really appreciate it! Now onto Pool School!

    mort

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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Glad to be able to help. We even got two for one, solving two peoples problem with one answer!
    chiefwej
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    Quote Originally Posted by mort View Post
    This is exactly my issue. Seems that when my lovely bride told me she hadn't done anything differently to the pool, she forgot to tell me she and her relatives had used the spa one day. I pressed the spa button and everything went back to normal. I even re-installed the original timer.

    Thanks, chiefwej! Thank everyone! I really appreciate it! Now onto Pool School!

    mort
    I'm glad I found this thread, I happen to be experiencing essentially the same problem. However I'm unsure of what you all mean when you say "spa button". On the actual spa itself - located about 20 feet away in my deck - I only have 3 buttons, one is for a circulation type run, the other is for all the jets to come on, and the third is for the light. I've tried toggling the jet's and the spa pump continues to run.

    The pump, timer and housing are all located in my garage, would this switch be on the actual spa, or the pump?

    Thank you in advance!

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    Re: Intermatic Timer Runs Constantly - Even Manual Switch Doesn't Work

    anyone have any ideas on this one?

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