Question about Malibu Intermatic Inc. ML300RTW 300-Watt Power Pack with Timer and Ground S

1 Answer

The timer feature of my Malibu 300 watt power pack just stopped working. The lights can still be turned on/off manually. Anything I can do other than buy a new one?

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1 Answer

Unfortunately when the power pack stops working there is no solution.
Your power pack has electricity so that is not the problem.
The bulbs turn on, so the bulbs are ok.
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

I have a Malibu 300 watt ML300rtw, timer goes until it reaches "on" pin then stops. if i manually turn timer, i hear click and lights go on - they turn off no problem. pins are not broken. what next?


Sounds like the mechanical timer assembly likely has never been lubricated, You may use a lightweight oil, such as WD-40, to lubricate the timer mechanism.

May 09, 2015 | Malibu ML300RTW - Low Voltage Power Pack...

1 Answer

Timer does not turn on its own turn it manually is fine can l change the timer


There is no replacement timer module sold for the power pack.
Plug power pack into cheap wall timer.
Link below has troubleshoot steps and warranty information
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html#troubleshoot

Gene

Water Heater Timers Save Money

Feb 19, 2015 | Malibu Intermatic Inc. ML300RTW 300-Watt...

1 Answer

How do I reset the 300 watt Malibu lv?


There is no reset button for ML series power packs:
Copy following link for troubleshoot resources, replacement trippers, installation tips and manuals
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Gene
h

Jul 29, 2014 | Malibu ML300RTW - Low Voltage Power Pack...

1 Answer

Does Malibu still make a model number ML500TW timer transformer


Intermatic/ Malibu series lights are available 44 watt, 88 watt, 100 watt, 121 watt, 200 watt, 300 watt, 600 watt, 900 watt.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

None of the other brands sells 500 watt either.
Kichler sells 300 and 600 and 900Watts
Paradise does not have 500 watt
Malibu brand does not carry 500 watt
Portfolio does not carry 500 watt

Apr 16, 2013 | Hardware & Accessories

1 Answer

I replaced an old Malibu 300 watt powerpack with a new digital 300 watt Malibu power pack and when I turn it on it runs for about a miniut and then shuts down. I have 15 11watt light on it, the same as the...


300 watt power pack should have 300 watt load.
You have 165 watt load.
Copy following link for general tips to get Malibu power pack to last longer.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Problem might be the photo eye.
http://waterheatertimer.org/images/Malibu-8100-9045-01-large.jpg
Rotate manual dial to ON position and see if lights turn ON.
Keep in mind the digital power pack has photoeye that is light sensitive, and must be exposed to dark light to activate.
For timed functions. Rotate manual dial until it points at timer. Press clock set function button, and use up-down buttons to set current time. Press timer ON button, and then use up-down to set ON timer. Then press timer OFF button , and use arrow keys to set OFF time.

This product has 1 year limited warranty, contrast with old-type analog power pack with 5-year warranty.
Malibu does not even post a manual on their site, which might have troubleshoot section to illuminate why your system has problem,
http://malibu.brinkmann.net/customer_service/owners_manuals.aspx

Nov 29, 2012 | Hardware & Accessories

1 Answer

Malibu 300 watt Power Pack Timer Directions


Copy following link for step-by-step instructions in form of troubleshoot, plus tips for protecting your product rights, protecting power pack from early failure, replacement trippers, product manual, and 5-year warranty claim requires receipt.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Oct 11, 2012 | Malibu Intermatic Inc. ML300RTW 300-Watt...

1 Answer

I have a Malibu 200 watt transformer with timer and I'm not sure why the timer is not working. Is there an instruction manual on line that I can read to see what I should do?


Malibulights.com has manuals.
http://malibulights.com/customer_service/owners_manuals.aspx

People post malibu questions on Fixya each day.
Some people report being able to take apart power pack and timers, but nobody reports being able to fix power pack once it stops functioning.

If you can get manual override to turn lights on, 'Harry' wrote to fixya with some help.
His timer stopped working so he bought cheap plug-in timer, set power pack to override, and then plugged power pack into cheap timer.
Harry also said his power pack has 5 year warranty and he was negotiating with Malibulights.com for replacement. No word how that came out.

There are no parts for power packs.
Best I found are tips for next power pack that might save money:
The reason I add tips now, before your power pack needs replacement is some fella wrote fixya.
He bought 500 Watt power pack to replace 300 Watt > thinking bigger was better.
Power pack burned out. Here's why:
a) Match wattage of bulbs with wattage of power pack
Lets say you have fifteen 20 watt bulbs = 300 watts, so install 300Watt power pack
b) Installing a 500W power pack on 300W of bulbs will burn out bulbs and power pack.
c) Replace bulbs as soon as they burn out or other bulbs will burn out and power pack will burn out.
d) When working on bulbs, unplug power pack or power pack may burn out.
http://www.malibulights.com/guides_support/low_voltage_planning_guide/select_your_power_pack

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

Feb 17, 2011 | Malibu ML200RTW - Low Voltage Power Pack...

1 Answer

Timer will not tirun on the lights, it stops when it gets to the time to turn on.


Malibu home page
Malibu manuals

Try the manual override >>> un-plug power pack and try loosening manual override with WD-40

It sounds like the clock motor is unable to push the manual override
Don't continue to run power pack or the clock motor will burn up or break a plastic gear

If manual override will not work, or clock will not trip on lights, you need a new power pack
Power pack size chart and wire length

Be sure to buy same wattage power pack as you have
The 300 Watt unit is made for 15 - 20watt bulbs (15 x 20 = 300)
If you buy 600 Watt power pack and hook it up to 10 - 20 watt bulbs, it will burn out the bulbs
Manual also says to replace burned out bulbs ASAP or other bulbs will burn out.

Oct 09, 2010 | Malibu Intermatic Inc. ML300RTW 300-Watt...

1 Answer

Transformer problem


Malibu power pack has to match total watts of bulbs

15 bulbs each 20 watt = 300 Watt power pack
10 bulbs each 20 watt = 200 Watt power pack

Mar 01, 2010 | Malibu ML200RTW - Low Voltage Power Pack...

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