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Rocket Giotto brew temp problems

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  • TC
    replied
    Re: Rocket Giotto brew temp problems

    All good Boris,

    Its just slight variation between pressurestat styles.

    Time for shots

    Leave a comment:


  • Boris
    replied
    Re: Rocket Giotto brew temp problems

    Ok so the same service agent came back and apologised for not performing a complete functional. I did have to point out that even though the board numbers were the same part number, the wiring picture on them was slightly different.

    He then twigged that this new board needed a different wire set up (huzaar ;D) and removed the white and grey wires and replaced with a single black and some other wire location changes.

    Then he checked the Pstat (the old one),panelled up and job done. So in the end, albeit a week longer than it should have been, my world is back to normal.

    .. though Ive just noticed the pressure gauge is no longer rock steady as it was. It reaches the desired setting of 1.25 bar and then starts to slowly drop to 1.0 and then pressures back up again.

    any ideas?

    Leave a comment:


  • TC
    replied
    Re: Rocket Giotto brew temp problems

    Hi Boris- as previously stated, if you see black and grey direct from the control board to the pressurestat, you will need the rewire.

    Chris

    Leave a comment:


  • Boris
    replied
    Re: Rocket Giotto brew temp problems

    Gday Chris,
    Since I had the time , I compared my wiring to the post 2005 diagram found in ECM Giotto Premium - Diagram of machine post. As it matches the diagram, what are the changes that need to be rectified? Is there a diagram of the mod I need?

    regards
    Boris

    Leave a comment:


  • TC
    replied
    Re: Rocket Giotto brew temp problems

    Originally posted by 4D607D667C0F0 link=1330761829/28#28 date=1335599404
    Thanks for the heads up Talk Coffee. The wiring in mine looks pretty close to the post 2005 wiring diagram, only grey and black wire to the Pstat. Isnt that something a tech should notice? Why are good tradies so hard to find..
    Yes Boris. If it isnt rewired, you will be back with the same problem. My advice is to ask him to complete the job properly or find someone who can do the work.

    Leave a comment:


  • Boris
    replied
    Re: Rocket Giotto brew temp problems

    Thanks for the heads up Talk Coffee. The wiring in mine looks pretty close to the post 2005 wiring diagram, only grey and black wire to the Pstat. Isnt that something a tech should notice? Why are good tradies so hard to find..

    Leave a comment:


  • TC
    replied
    Re: Rocket Giotto brew temp problems

    Yes Boris- normal for a flaky board.

    You now need to adjust the pressurestat to 1.2 bar at top of boiler pressure.

    Owners- some things to keep in mind:
    1- If you repair your own machine, you take on all warranty responsibility.

    2- If you own a Giotto Classic or Premium, check the wiring to the pressurestat and if you see thin black and grey, take your machine to an appropriately qualified tech. and have it rewired to current spec. It will prolong the life of your current board and may well save you a few hundy on a new board at some point in the future. The new wiring protocol is much easier on the control board.

    Dont say you werent warned

    Chris

    Leave a comment:


  • Boris
    replied
    Re: Rocket Giotto brew temp problems

    Take two, the old board is now refusing to heat again, so at least that confirms the old board is dodgy, but the old Pstat was fine. Refitted the new board, heating, but no response by the pstat. Me thinks a dodgy board I got.

    Yes, the service agent is booked to come out again, while I dont have to pay the 187 call out fee, Im still up for the 97 per hour labour, and what really chaps my grits is, I reckon it will be the board, and I know they dont carry them in the service vans, so itll be another week !!

    Leave a comment:


  • iaindb
    replied
    Re: Rocket Giotto brew temp problems

    I guess its possible - if the pressurestat is wired through the control board - that there is a fault in the board or even in the wiring.

    However:
    Originally posted by 1D302D362C5F0 link=1330761829/14#14 date=1335263088
    but control board dead. I had a service agent supply and fit it. The functional check was to electrically check the board was getting power, Check, job done. When hed left, I reassembled the G , carried it into the kitchen and switched her on.
    If you paid a service agent, and youre left with a non-functioning machine, then shouldnt the same service agent be called back to fix it? After all, you paid to get it working, so he should deliver it working...

    Leave a comment:


  • Boris
    replied
    Re: Rocket Giotto brew temp problemsGhost

    Ghosts I tell ya..!!. Refitted the old board, just to rule out gremlins. Wrong, now the boiler heats up, was not expecting that. Pressure is doing its thing, though kind of low. So what do I do now? Ahhhh >

    Leave a comment:


  • Boris
    replied
    Re: Rocket Giotto brew temp problems

    Ok so the new brass screw Pressure stat arrived Friday (at the post office). Fitted it this morning, exact same result. Boiler keeps going and going, tank pressure valve starts to bleed off at around 1.7 bar. With the Press stat screw all the way in, or all the way out, no difference. I bleed the tank pressure back down to 0.5 bar before re-testing.

    Any ideas?

    Leave a comment:


  • Boris
    replied
    Re: Rocket Giotto brew temp problems

    Thanks Gents,

    Order placed with JetBlack Espresso, I opted for express post. Hopefully Ill get it Friday..

    Thanks for your assistance.

    Leave a comment:


  • JetBlack_Espresso
    replied
    Re: Rocket Giotto brew temp problems

    Hi Boris,

    We stock the brass screw Mater XP110 in preference to the plastic screw type:

    http://www.jetblackespresso.com.au/s...urestat-xp110/

    Leave a comment:


  • TC
    replied
    Re: Rocket Giotto brew temp problems

    Coffeeparts do them, but we have found the low end XP110-L prone to failure. Plakky screw at circa $50 =  [smiley=thumbdown.gif].

    Look for the better brass screw version at more like $90. I think the T125 is probably better than the 110 :-/. Any pressurestat will do the job. Sirai, Jaeger even commercial- so long as it will fit.

    Leave a comment:


  • Boris
    replied
    Re: Rocket Giotto brew temp problems

    Thanks Talk Coffee, I just checked the other side of the board, and it has Proelind written on it. Plus a grey wire, not white, its been a long day..

    The pressure stat fitted is a Mater. From the parts breakdown I read C199900294, anyone know if theyre repairable and or where I can get one if the techs here cant get one?

    Leave a comment:

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