Question about Bosch TASSIMO Coffee Makers & Espresso Machines

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Bosch Tassimo coffee maker trips breaker

When powering on the ground fault breaker trips. The unit has been dry for weeks. Internal inspection does not reveal any obvious problems. Is there a common component failure that would cause this?

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Posted on Jan 02, 2017

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Might there be some stuff crusting the dispanser vent? Did you clean it regularly? If you've not done that, this is what you do:

1) Open up the lid where the T-Disc is supposed to go.

2) Take out any moveable (not breakable) object, for instance the thing that punctuates the T-Disc(its made of two parts stuck together) and the T-Disc holder.

3) Take 'em apart and put 'em into your dishwasher or wash it by hand.

4) Wipe the entire T-disc area with a damp cloth, make sure nothing stays there that isn't supposed to be there.

5) Put the removed and cleaned parts back very carefully and watch out that they are exactly in place, if in doubt wheter they are fitted correctly, just shake them a little. There should be no movement other than up and down.

6) Enjoy your coffee!

Posted on Jan 23, 2009

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SOURCE: Bunn coffee maker trips the breaker

It is possible that you have a short in your limit thermostat, but most likely this is caused by small holes in your main heating element. these units start to split length ways down the element, causing a short to ground through the water. These elements are readily available at your local Bunn repair shop.

Posted on Feb 13, 2009

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SOURCE: Tassimo machine leaking water underneath

I'm having the same problem with my machine. I rang the Tassimo careline and they told me to descale the machine but, so far, this has only made matters worse. I'm now going to take it back to where I got it from because it's still within its warranty.

Posted on Nov 20, 2009

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SOURCE: trips ground fault on plugging into receptacle

I just opened one of the machines with this issue and found that the heating element is entirely ripped open (over the length of the coiled heating element) and the water contaminated with brownish stuff from within the element.
Was wondering if that part can be replaced.

Posted on Nov 30, 2009

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SOURCE: manual instructions bosch tassimo coffee maker

hi, this morning I was making a capuccino, and the first part was fine, the expresso was fine, I waited for the light to change colors, open the lid, put disc with the cream in the machine and the green light won't come on, only the yellow on the left hand side and is not working<br /><br />

Posted on Aug 23, 2010

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Sta-rite heater is about a year old. It worked well up until a week ago. It now trips the gfi breaker. I swapped out the breaker and it trips that too. If I disconnect the exhaust fan, the heater powe

Something in the electrical system supplied by the GFI breaker has a ground fault. The current to ground required to trip a GFI is very little such that dampness on any electrical connection can trip it. This is especially true with motors that have a lot of fine wires in the windings and are open to allow cooling.
Hard water and pool chemicals all are worse than condensation from the air because of their ionic nature.
If the same GFI powers the pump it is what I would suspect first. Your question got cut off before the result of the fan disconnect which if disconnected didn't trip the GFI, is probably the problem. But you should open whatever you can access containing electrical components and make sure everything is dry

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I bought a used washing machine that was stored I outside while it snowed. How many days should I let it dry out before I plug it in and use it?

Depends on how long it was stored outside. If just briefly, for one snowfall, 72 hours in a warm, inside the house environment ought to be enough for drying out. I would recommend that you tip the machine on its back after it has dried out this way and inspect the working parts for any signs of obvious damage, mouse nests or bad wiring connections. You might want to use a vacuum with a hose attachment and clean out any obvious dirt or cobwebs too. When powering the unit up for the first time after the drying out and inspection, I would also recommend that you plug it into an outlet with a Ground Fault Interrupter (GFI) either in the outlet itself or on the circuit breaker for that branch circuit in the breaker box. Run a short wash cycle while you physically observe the complete operation of the machine (fill, agitate, empty, rinse, spin etc) and make sure that you don't hear screeching noises (bad bearings) or see or smell smoke from the control panel, belts or motors.

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First be very careful because the unit is protected by a ground fault internal circuit interrupter and may trip if there is a short circuit to ground. Even a very small short circuit will trip the circuit breaker.

Something else: If you are plugging it into an already existing ground fault outlet then that may also cause one of the breakers to trip.

Like I first mentioned, if you don't know what your doing be very careful. Electricity and water are not friends, especially if the circuit breaker is tripping.

Good luck,


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After being turned off for 4 days through Hurricane Irene... the pump will trip the breaker whenever we turn it on. The switch is good. We can only assume maybe the water is wet. Any suggestions?

I assume when you say breaker you mean a Ground Fault Circuit Interupter (GFCI) breaker or receptacle. If this is the case then what happens is water can get into devices such as pumps and the water can cause unintended electrical paths from 120VAC nodes to the motor frame which is grounded. The GFCI is designed to detect a nominal 5 mA of current to ground and trip. If the GFCI is tripping I would let the motor dry out for a day (if the weather is dry) and try it again.

If by tripping you mean a standard beaker without a test button is tripping then it is tripping because of high current. If this is the case then it may be a water problem but you are just as likely to have a short in the wiring or the motor. I would try shutting off the safety switch, disconnecting the wires to the motor and wrapping the exposed wires with electrical tape. If you turn the switches on that would normally turn on the pump and the breaker again trips you have a problem in the switches or wires. If the breaker does not trip you have a motor problem. You can try to dry it out but probably it has an internal metalic short. If you have access to the location is you could fix it but if not the motor will need to be replaced. I hope this helps.

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This is probably not a faulty breaker. A GFCI breaker is designed to trip when there is a 4-6ma inbalance of current(usually 5) between the two current carrying conductors (hot and nuetral) You may be having a moisture problem. Check all of your electrical connections (with power off) for moisture. If you find any throughly dry (like with hair dryer) and seal to prevent further problems. Your motor may be an open drip proof motor. IF condensation builds inside that coud also cause problem. There are GFCI testers available if you wanted to test your breaker, but for one time it probably isn't practical.

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Burnt out

internal failure possibly on power side, lower than 300A fault current so unit could not trip i/p protection and as fault was post ac section, continued to burn internally.
it just broke
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maybe this is what happened, need to know a lot more info to change hypothisis

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Throws Breakers

Check the power cord for damage, and repair anything you find.

If confident enough, open the unit up and inspect all the internal wiring - check for chafed wires and for terminals that have come undone or that are touching anything they aren't obviously meant to.

Check the unit hasn't got wet inside - mop dry then leave to dry out properly in warm air for a couple of days if it has.

If that doesn't throw up anything obvious, then you're probably looking at insulation breakdown of some component (my money would usually be on the element). For a unit like this, I doubt it's economic to start buting spare parts, so you're probably better off buying a new coffee maker.

Good luck


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