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rogerjames99

Prima Donna ESAM 6600 hot water dispense problem

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Hi,

 

My Delonghi Prima Donna ESAM 6600 has stopped dispensing hot water (again). It has been repaired under extended warranty twice in the past for this problem. The symptoms are, when the hot water dispense button is pressed, the display shows "hot water" for about 5 seconds and nothing happens, the display then reverts back to the standard "ready for coffee" message. There is no click from the solenoid and no pump activity. The machine dispenses espresso with no problem so that side of the water circuit is OK. I have accessed the test menu and checked out both solenoids. Both sound to be operating OK. Something is stopping the water dispense cycle from starting. The same thing happens when any milk heating or frothing is required. Without a service manual it is very difficult to check this out. Has anyone got any ideas, or pointers to where I might find a service manual. I have searched and not had any luck. I am a competent engineer and have fixed a number of gaggia and saeco machines in the past.

 

Cheers

 

Roger

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You may have to wait a while for any thoughts on this as the machine above is not a very common one on here and may have been something members started off with rather than currently still have.

Above offered so you don't think we ignoring you, we are friendly honest :)

You could also do an introductory thread about your coffee journey so far and see if that draws out someone that can assist

John


Roasters: BB Dalian Amazon 1kg -Power contolled GeneCafe 101- 113Kg of greens - Tonino

Espresso: Londinium L2 - Gaggia G105 - Silvia v3 Mr.Shades PID'-d - Faema E92a2 (Project) - MyPressi Twist - VST baskets / Motta Europa (350/500/750ml) - Torr Ti 58.55 & Goldfinger flat 58.4 TiBlack, Pullman 51.4 - Acaia x2

Grinders: Flats: Compak R120 - NS Mythos plus Conics: Compak K10PB - Lido 3

Brewed: Behmor Brazen - Moccamaster KBGT471 - Aeropress - V60 - Cona model D - Clever - Mizudashi - 8-10 + 6 cup Chemex

Water: BWT Bestmax V Refrac: VST III

and a Puq Press not in a pear tree..

 

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Thanks for the tip John. I will do that. The post may be a long one as my journey started in the 80s working with Olivetti in Ivrea, and moved on via Seattle in the 90s.

 

Roger

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Roger, are you in a hard water area and how often do you descale?

 

Richard


Melitta Barista Smart TS

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No the water is extremely soft. The machine was regularly descaled when it was last in use. It has been in storage for a about 18 months. It took a while to get the pump properly primed. It then worked properly for a couple of days, dispensing coffee, hot water and milk. It then started to have trouble at initial switch on with the pump priming. This did not appear to affect its ability to dispense coffee. However it soon started with the hot water and steam problem I described above. I did some tests and opened the machine and fixed the usual problem with a sticky back flow protection valve on the ULKA pump. That has sorted all the priming problems, but the steam circuit related ones remain. It may be a blockage in the steam circuit but I think that is unlikely, as is does not get that far into the dispense cycle. As I said in my post once you press either the hot water of one of the milky coffee buttons, the ready for coffee message disappears and is replaced by the "heating up" message (not "hot water" as I said in my original post , sorry) and after about two seconds reverts back to the "ready for coffee" message. The is no sound other than the initial button bleep, the solenoids do not activate, the brewing/diffuser unit does not move, the pump does not run. It is as though some sensor is not working or is being interpreted as an error, and the cycle aborted.

 

By the way, for anyone who is interested here is a short summary of how to get into the service menus on an ESAM 6600. Thanks to http://computer-aaaargh.blogspot.co.uk/2015/05/delonghi-magnifica-coffee-machine-test.html for most of this info.

 

Product counters:

Remove power from the machine. Pull plug or switch off at socket. Press and hold the P button and the hot water button. Keep buttons pressed and restore power. When you see the dispensing counters appear release the buttons. Press rinse button to see the second page. To exit, power cycle the machine.

 

Test mode:

Remove power from the machine. Pull plug or switch off at socket. Press and hold the "2 small cups" and "2 large cups" buttons. Keep buttons pressed and restore power. Wait until "Load Test Mode" appears on the display. Release the buttons

 

The following tests can be performed:

Diffuser motor: use the "1 large cup" and "2 large cups" for up and down

Thermo block: "P" button

Steam heating: "Flush" button

Pump: Press the "Water" button

Grinder: Press "Aroma selection / coffee"

Both solenoid valves EV1 + EV2 on: Press "Cappuccino"

Single solenoid valves: "1 small cup" -> EV1 and "2 small cups" -> EV2

 

To exit, power cycle the machine.

 

Reset:

Remove power from the machine. Pull plug or switch off at socket. Press and hold the P button and the Power button. Keep buttons pressed and restore power. Still keep buttons pressed and wait till the diffuser motor stops running. Release the buttons.

 

Electrical test mode:

Remove power from the machine. Pull plug or switch off at socket. Press and hold the rinse and the hot water buttons. Keep buttons pressed and restore power. I am still waiting investigating what this does.

 

Display and button test:

To follow.

Edited by rogerjames99
More info added

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I suggest you try descaling with just fresh water. If there is something blocking a tube this may force it out. It has worked for me in the past.


Melitta Barista Smart TS

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Hi Roger,

 

Did you ever solve this issue? I have the exact same problem with my wife's machine. It does not dispense water or hot milk. The display just reverts to the home screen with no sound of moving parts inside after you push the buttons. I have tried descaling with fresh water and it pumps it out of the nozzle with no problem.

 

I found your additional information very useful and have run all of the physical diagnostics, as you described, with everything seemingly working fine.

 

I am at a bit if a complete loss and, as you seem to be much more informed than me, was wondering if you ever solved the problem ... and if so, if you don't mind me asking, how?

 

Thank you.

 

Phil

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Hi Roger,

 

Did you ever solve this issue? I have the exact same problem with my wife's machine. It does not dispense water or hot milk. The display just reverts to the home screen with no sound of moving parts inside after you push the buttons. I have tried descaling with fresh water and it pumps it out of the nozzle with no problem.

 

I found your additional information very useful and have run all of the physical diagnostics, as you described, with everything seemingly working fine.

 

I am at a bit if a complete loss and, as you seem to be much more informed than me, was wondering if you ever solved the problem ... and if so, if you don't mind me asking, how?

 

Thank you.

 

Phil

 

 

The quick answer is. Yes I did fix it. What you probably do not want to hear is that I cannot remember what it was. I will have a look through my old emails and see if I can find a clue. Did you check the thermal cutouts and temp sensors.

 

R.

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The quick answer is. Yes I did fix it. What you probably do not want to hear is that I cannot remember what it was. I will have a look through my old emails and see if I can find a clue. Did you check the thermal cutouts and temp sensors.

 

R.

 

Thanks Roger, glad you managed to fix it. I haven't checked the thermal cut outs and temp sensors. I will start looking into how to check them. If you could find what you did previously it would be very much appreciated. Thanks for taking the time to respond.

 

Phil

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The quick answer is. Yes I did fix it. What you probably do not want to hear is that I cannot remember what it was. I will have a look through my old emails and see if I can find a clue. Did you check the thermal cutouts and temp sensors.

 

R.

Hi roger i have the same problem coukd you let me know how you fixed it

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hi phill

 

did you fix the problem as i have the same, if so can u tell me how?

 

thanks

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