Top 20 Malibu Intermatic Inc. ML121RT Low Voltage 121-Watt Power Pack with Timer Questions & Answers


Mine is a ML121rt. Lights just went dead one day. Took it apart and found a spider egg in the switch and the contacts slightly fouled. The switch comes apart easily. Cleaned it and hit the contacts with a point file. Good as new. Tools needed: Torx bit, voltmeter, point file.

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Yes possibly:
Did you unplug transformer before adding light.
Does wire size match distance and gauge requirements?

Copy following link:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Gene
h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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Hot transformer is fire hazard... warmish transformer is normal... replace transformer
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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1) Copy following link for malibu power pack tips for longer transformer life:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

2) Two plug choices on each outlet, Plug power pack into other outlet on receptacle.
Inspect for damage on outdoor outlet.
Replace outdoor outlet, and do not use quick connects. Connect wire directly to screws on side of device.
Replace GFCI outlet.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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Do you have photo-eye connected to the transformer?
Disconnect photoeye, or cover photoeye with black tape and see what effect it has.
Plug another light into same outlet and see if it has same problem.
Run temporary extension cord to transformer and see if problem is same.
When the lights are off, does the transformer make humming sound.
Intermatic/malibu timers have 5 year warranty if you have sales receipt.
Copy following link for troubleshoot resources, trippers, operation tips, etc.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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Some people report taking apart clock module and cleaning gears.
Others report gears are stripped out.

Might be easiest to buy cheap plug-in timer, set power pack to override, then plug power pack into cheap timer.

Timer clock module is not sold separately.
With receipt, power pack has limited warranty against workmanship defects.
Open following link for power pack tips and resources:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Take a moment and rate answer:
And 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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Try it... should work
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html#install
However minimum load for ML121 is 80% load rating.. so 80 watts is ok for 100 watt transformer... 60 watts is low and can cause early failure of transformer.
Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Malibu... | 231 views | 0 helpful votes

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