Intermatic T104R won't turn pump on, but does turn it off


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Old 08-31-14, 09:10 AM
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Intermatic T104R won't turn pump on, but does turn it off

We recently purchased a house with a pool and jacuzzi. After my pool maintenance guy set up the timer on the Intermatic T104R, it was working fine in terms of turning on and off. Then a few weeks ago we had a major storm and now it turns the pool OFF, but won't turn it ON. I checked that voltage between 1 and 3 is 240 V, and between 1 and ground and 3 and ground is 110. I have made sure it is pushed in. Anything else I should check for why it is not turning it on? I think the pool has been there since 1989, so I would think the timer has stood the test of time.Name:  20140831_110425_Android.jpg
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Old 08-31-14, 09:29 AM
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Welcome to the forums.

now it turns the pool OFF, but won't turn it ON.
Does that mean you are turning the timer ON manually and the timer is shutting itself off ?
We can assume the clock dial is turning ?
Is the dial turning to ON and then stopping ?

You've measured 240v and the equipment operated so it doesn't sound like you have a wiring problem.

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Old 08-31-14, 09:37 AM
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Yes, I am manually turning it on. It turns itself off about 4:30 PM, which is the set time.

It is supposed to turn on about 10:30 AM. Yesterday and today, I watched it cross the 10:30 mark, but not turn on. I waited until 11:30, and then I turned in on. During the week, I either turned it on before I left for work, or didn't turn it on and found it still off when I came home. When this problem first started, I thought it was due to a power outage that happened and the clock was off. But now, the clock is correct and it keeps spinning, but the pump isn't turning on. When you say is the dial turning to ON, it is passing that point, but the pump isn't turning on. Is there something I should look for that it actually clicked it on?

Last weekend, I thought I remember that I watched it NOT turn on, and then at 11 AM, it did turn on. But other days it has not done that.
 
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Old 08-31-14, 09:51 AM
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If the dial keeps turning past the ON point then maybe you have a defective ON tripper.
Do you have another one to try ?
 
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Old 08-31-14, 10:23 AM
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How would I access the ON tripper to see it? Is it behind the dial? I do not have another.
 
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Old 08-31-14, 11:03 AM
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Those timers came with two sets of trippers. You can get them at most home improvement stores and electrical supply houses.
 
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Old 08-31-14, 11:33 AM
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How would I access the ON tripper to see it?
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Old 08-31-14, 03:13 PM
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So I unscrewed the ON tripper, cleaned it off, and put it back in. Let's see if that works. What terminals would I check to see if it turned on? Would it be 2 and 4?
 
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Old 09-01-14, 04:39 PM
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Check the pump to see if it's running.
Geo
 
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Old 09-03-14, 06:51 PM
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Getting new tripper switches from Home Depot and installing it fixed the problem. Thanks for your help.
 
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Old 09-03-14, 07:57 PM
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Thanks for letting us know the solution.
 
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Old 09-04-14, 06:56 AM
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Getting new tripper switches from Home Depot and installing it fixed the problem
What was the difference between the old and new trippers? Were the original trippers visibly worn? This is also sometimes a problem with new mechanical Intermatic timers within a few weeks of installation. I know of a few contractors who have stopped buying Intermatic timers for this reason.
 
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Old 08-01-16, 07:25 PM
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I've since moved out of that house and moved out of the area to a place with no pool. However, I do remember we had the tripped switch problem again and this time buying new ones didn't fix it. I ended up replacing the whole counter on the timer unit I remember.
 
 

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