Question about Malibu ML600TW - Low Voltage Power Pack - 600 Watt - With Timer and Ground

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The transformer will work if I manually turn the dial. The dial will not automatically turn anymore.

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If the bulbs turn on when you manually rotate dial, then the power pack has electricity.
A lot of people ask for replacement Malibu tripper pins on Fixya, and it sounds like your trippers are working fine.
If clock has stopped rotating, that means the power pack has malfunctioned, and needs to be replaced.

I did find some tips to help folks preserve their power packs:
1) Match wattage of bulbs with wattage of power pack
-15 each X 20 watt bulbs = 300 watts, so install 300Watt power pack
2) Installing a 500W power pack on 300W of bulbs will burn out bulbs and power pack.
3) Replace bulbs as soon as they burn out or other bulbs will burn out and power pack will burn out.
4) When working on bulbs, unplug power pack or it may burn out.
http://www.malibulights.com/guides_support/low_voltage_planning_guide/select_your_power_pack

Posted on Nov 12, 2010

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1 Answer

Intermatic dial doesn't automatically switch sprinklers


1) Trippers can wear down. Transformer can go bad if model has 24Volt output. Relay can go bad.
http://waterheatertimer.org/pdf/How-to-Set-and-Troubleshoot-Intermatic-sprinkler-timer.pdf
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler

2) Add a comment Feb 2013 with model number, and include if this is new timer or older timer that worked before and stopped working.

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Check if trippers are worn.
Check if dial rotates and keeps good time.
Plug transformer into cheap wall timer.

Copy following link for trippers, 5-year warranty info, tips to make power pack last longer, and other troubleshoot resources:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

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Lost manual for ML300RTW transformer. Does this transformer have an override so I can plug into exterior timer? If so, where is it?


Yes power pack has override, depending on model.
There should be a small knob located above and to left of dial that rotates: Step 8 in Manual says: You can manually operate the lights by turning the Manual ON/OFF Switch counter clockwise.
http://www.intermatic.com/~/media/files/intermatic/products/instructions/professional%20lighting/ml300rtw%20ml300rtwsn%20trilingual.ashx

For information on Intermatic/Malibu power packs showing links to manuals, troubleshoot steps, replacement trippers, useful links, warranties and tips:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Add a comment with your experience so others with same-similar problem can benefit.

Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

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The timers on my Intermatic Timer T40003RT3 are not working. I can turn the pumps on manually with the switch below the timers but the dials themselves are not turning, preventing them to turn on &...


Sounds like clock motor(s) are working.
Snap mechanism out using thumb spring located inside top of box.
Look for clock motor number printed on clock, should be WG1573 for 240V timer

Google search for 'Intermatic WG1573'
For example Grainger sells that clock motor as 1PNK2
(plus they sell extra trippers which are designed to wear down):
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Mar 05, 2011 | Intermatic Timer T40004RT3 300 Watt Pool...

1 Answer

My timer manual switch works,it turns the outside lights on and off. However the automatic dial,even when plled out and set to time to operate does not work.What 's going on? Isit me?


The two tabs are for On ad OFF.
One is slightly longer than the other. If the OFF tab is in the ON location, it won't work, it'll just click past the time and not flip the paddle to ON.

Try this, turn the dial (NOT pulled out) around slowly and see if it flips the paddle to ON. Keep turning it, slowly, and see if it flips to OFF.
If it works while you're "helping it" then it should work automatically. If it doesn't, maybe the gear is damaged and it can't move past a certain point.

Does the time move? Do you hear the motor running? I've seen the motors go bad. The manual flipping will work then, but the motor isn't running the clock around.

Jan 30, 2011 | Intermatic T101 - 24 Hr. Dial Time Switch...

1 Answer

Cycle dial doesn't advance automatically anymore. I saw some listed problems that sounded similar, but not exact. Washer will work in all cycles, but only when I watch and move the dial manually.


Hello & Welcome to FixYa

Its seems that the Timer is stuck, as everything else is working fine in the unit and the dial ust gets stuck and so won't complete the cycle so the problem is with the Timer motor going bad and needs replacement. Please get back to me if you have any other questions.

Kevin

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1 Answer

I just purchased Malibu ML 600 TW transformer, and ran wire and attached lights, but I can't get any of them to work. Perhaps I'm wiring it incorrectly? How do I test the transformer to see if it is...


Malibu website
Malibu manuals

The power pack has a humming sound >> put your ear close
Plug in a hair dryer on same plug to see if you have power
Check the GFI tripper in bathroom and kitchen
Plug power pack directly into receptacle (no extension cord)
It is hard to believe you got every light wrong >> the light connections are pretty fail-proof today

1) You can test the transformer by rotating manual override counterclockwise >> that's the on-off switch
2) You can test transformer by seeing if clock dial rotates with passing time > the clock must rotate
3) You can check if wires have power > disconnect wires > use another wire to scratch across both terminals to see if there is a spark

4) Did you put the red-and-black tripper pins on the dial? Red = ON Black = OFF

5) I think you forgot to set the time of day correctly
- put in tripper pins.
- rotate center dial clockwise to present time
- now, rotate dial two more full rotations and come back to present time

If the dial will not rotate or transformer does not have power, then the transformer is defective.

Oct 09, 2010 | Malibu ML600TW - Low Voltage Power Pack -...

1 Answer

Lights will turn on and off manually only


Just checking, still plugged in, fuse or circuit breaker not tripped that provides power to it? If you can turn it manually, and the dial does not turn when powered up, look for a small on/off switch, other than that, maybe it does need replacement, but they usually last longer that a year, but I have had some timers that just quit working on me too.

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Could be a problem with the flyback /auto transformer / powerboard. I'd get those checked first..

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