I would suspect the brew element solid state relay is sticking on. I guess another possibility is that the output relay in the PID controller is sticking. Is the PID actually calling for heat when it passes the set point? The PID display has a dot that lights up when it is calling for heat.
I am assuming you are referring to the brew boiler as that is the one whose temperature is indicated on the PID. If it were a steam boiler problem then you would have a) high pressure indicated on the steam guage and b) most likely steam being released from the safety valve. Or am I missing something in your description of events? I should add that I used to fix the commercial versions of these Expobars (and others - Synesso, LM) which are are virtually identical to the domestic machines in many respects. Graeme On 03/02/2012, at 11:55 AM, Judge wrote: > It kept climbing, and I shut it down when it hit about 235f. They > have no idea having changed both items. If I ever find out from them > I will let you know. > > On Feb 2, 1:57 pm, Dennis Keating <[email protected]> wrote: >> thats interesting - did it heat the front boiler to 245 deg ? - mine did >> that once lately and i would like to know what to suspect - Dennis >> >> On 2/1/2012 3:27 PM, Judge wrote: >> >> >> >> >> >> >> >>> Well as promised an update. >> >>> I changed the processor and pressure stat. Sent to me by ZCafe one at >>> a time as requested by phone. After doing so front boiler still just >>> climbed without shutting off. End result is ZCafe is sending me a new >>> machine. An I mean right away not even waiting for the return of the >>> old one. >> >>> With service like that what can I say? Any Canadians looking for >>> equipment I would definitely look at ZCafe. >> >>> Good luck all, and enjoy reading all posts here thank you all. >> >>> John >> >>> On Jan 25, 9:46 am, "[email protected]"<[email protected]> >>> wrote: >>>> John, >> >>>> Sounds like a positive outcome and experience. I have dealt with Zcafe >>>> for minor service issues, and found them to be very good. Good luck >>>> with the repair. >> >>>> Pete >> >>>> On Jan 25, 5:57 am, John Gibbon<[email protected]> wrote: >> >>>>> Well, my dealer is now sending me a new hose, pressurestat and computer. >>>>> I >>>>> actually like this instead of sending the machine. If it does not fix it >>>>> will be shipping. He says the heater element will be fine, but is adding >>>>> another year to the warranty just in case. >>>>> John >>>>> On Thu, Jan 19, 2012 at 4:53 PM, Dennis >>>>> Keating<[email protected] >>>>>> wrote: >>>>>> not a word but luckilyit hasnt reoccured - so far our vendor has never >>>>>> responded to my question rather new buyers instead >>>>>> On 1/18/2012 9:15 AM, [email protected] wrote: >>>>>> Any news on your Brewtus situation and how the vendor dealt with the >>>>>> issue? >>>>>> - Pete >>>>>> On Jan 13, 8:53 am, Dennis Keating<[email protected]> >>>>>> <[email protected]> >>>>>> wrote: >>>>>> i own a B1 w the factory pid upgrade and rotary pump/main line feed. >>>>>> last week i arose to brew my morning coffee to see my pid was also >>>>>> reading 245 or so. i could barely operate the brew lever the water was >>>>>> so hot. my machine is on a timer, and works flawlessly every morn. my >>>>>> steam boiler was not over pressured, tho. i think after flushing down >>>>>> the temp somewhat, i left the machine off to completely cool down. >>>>>> later on, the thing worked okay, and has since then. BUT, what is going >>>>>> on, TODD? -Dennis >>>>>> On 1/13/2012 5:04 AM, Judge wrote: >>>>>> My letter sent to retailer. I will let you know how it all turns out >>>>>> and just who the retailer is soon. >>>>>> " Hello, >>>>>> This morning I was woken to a frightful bang as my Expobar IV tank >>>>>> over-pressured. I came down stairs to it venting. All the cups on the >>>>>> top of the machine had been blown off so I imagine the tank ruptured. >>>>>> It was leaking water everywhere, had a strong smell of burning and >>>>>> showed a pressure of over 2 bars on the boiler (upper gauge, and it >>>>>> had been venting a few minutes). Should be noted steam in the gauge. I >>>>>> shut it down, opened the hot water tap to relieve pressure. After >>>>>> doing so I turned it back on noted that the PID showed a temperature >>>>>> of 245 F (I keep it at 202 F) and it started to leak as soon as the >>>>>> pump began to fill the tank. >>>>>> I figure as the machine is new I am best not even opening it and start >>>>>> poking around, and messing with the warranty. I do have the original >>>>>> box as stated in your red carpet warranty. >>>>>> Awaiting your response as to how we may deal with this clearly >>>>>> defective machine. A real shock as I have woken to expecting a perfect >>>>>> cup of espresso every morning now. >>>>>> All the best >>>>>> John. " >>>>>> -- >>>>>> You received this message because you are subscribed to the Google Groups >>>>>> "Brewtus" group. >>>>>> To post to this group, send email to [email protected]. >>>>>> To unsubscribe from this group, send email to >>>>>> [email protected]. >>>>>> For more options, visit this group at >>>>>> http://groups.google.com/group/brewtus?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Brewtus" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/brewtus?hl=en. > -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/brewtus?hl=en.
