Breville BES920 Dual Boiler - Owners thread

[BOR15]

ok, will give that a go.
Cheers.

Check the tools you got with it. There is a small plastic tool that has a pin to clean the holes.

[nickdenham]

You're not giving much info:

How old is the machine
Have you descaled on a regular basis
Do you back flush ???

I think you're looking at a minimum of $250+

Apologies, you're right I was slightly vague!

1. It's coming on 6 years old
2. I descaled it only once in the first 3 years (when prompted) but have done it a bit more frequently (maybe once a year) and once every 6 months in the last year. To be fair it's only averaging 1 coffee a day though over that entire time.
3. I back flush after every use (i.e. before turning it off).

thanks for the estimate, I assumed it was at least that much given the parts cost look to be around the $150~ mark.

[nac]

Hi,
I have a new fault!!!
Cold clean water is slowly leaking from under the drip tray. The machine otherwise works fine so i suspect it leaking from the water tank inlet valve somewhere. But i cant work out how to get to that area of the machine. Any ideas please?

[robdridan]

Can someone please point me in the right direction- I assume there is mention of this issue somewhere.

My steam lever is getting stiff to lift when I go to turn steam on when the machine has been hot for a while. Less noticeable when it's cooler. Is there somewhere I need to lube or something requiring replacement? Not leaking steam or water anywhere. Machine is about 4 years old.

Thanks in advance.

[DamianS]

I've now had my machine for 2 and a half years now (out of warranty, feel such a fool I didn't get the extended warranty from the good guys), with no problems until the last week.

When I turn on the machine, the temp won't settle at the set temp of 94deg but soars upwards past 110deg without stopping until I shut it down.
I'm scared to leave it on in case the temp gets so high the boilers get damaged.

Initially, I thought the problem was a faulty/broken thermostat on the pump, but now I am led to believe it is a bad triac board.
Can anyone conform or dispute my diagnosis before I order a new triac board?
Guess I'll also need to replace a bunch of o-rings, since I have read they generally need replacing annually.

[level3ninja]

The thermostat, triac and relay are all involved in switchig the element on and off, which of them it is I can't say based on the info you've given. Does it heat when it's turned on at the power point but without the machine being turned on? Can you hear a click when turning the machine on and off (will be faint with the cover on)?

[DamianS]

Can't hear a click when turned on at the power point, but I did notice a lot of water bubbling out of one of the connectors leading to what I think is the steam boiler.
So I'd say there is corrosion and water damage on some circuits/components near to that.
Think I'll just take it in to be repaired.

[BOR15]

Can't hear a click when turned on at the power point, but I did notice a lot of water bubbling out of one of the connectors leading to what I think is the steam boiler.
So I'd say there is corrosion and water damage on some circuits/components near to that.
Think I'll just take it in to be repaired.

Open the top as you did and let it dry out first. Even use a hairdryer to speed things up and leave it open while you use it. It may just be moisture on the board from an oring.

[theonetruepath]

My naked PF which I bought direct from Breville just snapped in two when I clamped it onto the group head. Rather than grumble at Breville and demand another, is it relatively easy to get a wood conversion done on it?

[BOR15]

My naked PF which I bought direct from Breville just snapped in two when I clamped it onto the group head. Rather than grumble at Breville and demand another, is it relatively easy to get a wood conversion done on it?
[ATTACH=CONFIG]23616[/ATTACH]

Breville is very accomodating. The rubber on my PF was tearing to bits and they sent me a new one. Then you can play with this one as much as you like

[theonetruepath]

Yup they said they would send out another. I offered a high res pic which they said yes to. So I broke out the macro gear, turns out there was a significant defect which you can see easily without macro lenses, if you just turn over the PF and look at the top of the plastic under the rubber ring.

[Shortie]

Recently I bought a tidy-looking BDB to play with & compare with my pidded Silvia.
It pours steam out the left side of the drip tray. There were vidible leaks around
the top of the boiler so I replaced all the little o-rings with new Viton ones.
The leaks up top have stopped but steam still purs out the left sidevof the drip tray,
even when the machine is turned off.
Plugged in, turned off and it gets up steam & keeps boiling.
Could this mean a faulty triac board?

[Shortie]

My 920 heats up, makes steam & pulls a nice shot but the steam then pours out the left side of the drip tray until I unplug it.
Switch it off & the lights go out but it keeps boiling until unplugged.
Where should I look/test to identify the culprit component?
Thanks to you all for your fantastic support.

[noidle22]

Could this mean a faulty triac board?

Yeah pretty typical behaviour, steam leaks short out part of the triac board causing the element to run constantly. Most often affects the steam boiler circuit.

Remove the triac board from the top cover (machine off AND unplugged) and hit it with a heat gun for a while. Sometimes if you dry it out well enough it can resume normal operation but if that doesn't work, you'll need to replace it.
Another member tried component level repairing it, can't remember if they succeeded or not. It was the optoisolator that had failed on his I think.

[BOR15]

If I remember correctly the board has heat sink paste on it to transfer the heat to the top. This acts as a large heat sink and cup warmer. Either dry it without removing or get fresh paste from Ebay. You don’t need much. If you were close to me I would give you some.