OzAaron the tech...or detective. Good advice and thank you. I am going to skip the swapping of the thermostats between the boilers. I'm just going to buy a new one and see what happens. DeLuca's coffee is the only game in town that sells anything espresso and I've got a call and email to them asking if they've got such parts in stock. I even used your photo you included in one of your messages. DeLuca doesn't carry Expobar but I'm thinking that the thermostats are pretty generic so maybe one size does fit all.
They didn't get back to me today (Tuesday) but we'll see tomorrow. I will let you know more as the saga continues. Bruce in Winnipeg On Tuesday, February 2, 2021 at 3:01:41 PM UTC-6 OzAaron wrote: > Hi Bruce, > > Bingo! I think you may have found your issue. The thermostat should never > have any appreciable voltage across it; that is unless there is a > temperature fault (I think it is set to something like 160C or 320F). If > you are getting 120V across it I'd say that is your issue. As a quick test > you can swap the thermostats on your boilers, so the brew boiler gets the > dodgey one and the steam boiler gets the good one. You should notice your > steam boiler behaving properly then (brew boiler may click out early after > the swap). > > I've only got a Bii, so not sure how the newer ones are wired, but on > mine, the orange light is in parallel with the steam boiler heating > element; this means if the thermostat trips out, the light goes out with > the heating element (even if the pressure isn't up). The switch would > bypass this issue; which it does in your testing, so I think a faulty > thermostat should completely explain all the symptoms you are experiencing. > > Once you confirm the problem follows the thermostat, you should be able to > easily source a new one (or maybe 2 to replace both if they aren't too > expensive). > > Let me know how you go! > > Cheers, > Aaron > > On Wednesday, February 3, 2021 at 7:00:36 AM UTC+11 [email protected] wrote: > >> OzAaron...more to your suggestion...The orange light is off meaning the >> steam boiler is at pressure. Although, the steam boiler is NOT at pressure. >> The brew boiler is not getting heat and temperature is in the 70s C. >> >> At this point I took the voltage reading on the thermostat as you >> suggested. It reads the full 120V steady. Then, I turn off the steam boiler >> toggle switch on the front of the machine (left hand one). Now the brew >> boiler is getting power. Again, I take the voltage reading on the >> thermostat on the Steam boiler and now it reads zero. >> >> Not sure if all these factors are narrowing down the problem or not. >> >> >> On Tuesday, February 2, 2021 at 10:50:28 AM UTC-6 winnipegger65 wrote: >> >>> Thank you for all your suggestions. Herman...I did try the reset button. >>> That was not the problem, as it was not 'triggered'. Very good thought >>> though. >>> >>> I notice some other odd behaviour. Sometimes all is well. Steam >>> pressure good and brew temp up to 96C. I'll pull a shot and the steam >>> boiler engages. Then, the brew boiler just never heats up again and will >>> drop into the 70's. If I turn off the left hand toggle switch (steam >>> boiler), then the brew boiler starts to heat up again. Recall I said the >>> steam boiler did not react to adjusting the gear on the pressure stat. That >>> is true SOMETIMES. Sometimes, I can turn the gear clockwise and the >>> pressure does increase just as it should. Something else too. I have >>> noticed very loud and rapid clicks from what I would say is the pressure >>> stat. 5 in a row sometimes. That is not accompanied with the pump coming >>> on. Just some random clicks. >>> >>> Ira...you had some advice on 'jumper the supply and steam boiler wires'. >>> I'm not sure what that means. Which wires am I to connect? >>> >>> OzAraon, I think I did that test. When the steam boiler was heating and >>> engaged, I took a reading off of the thermostat. The voltage was positive >>> but pretty small...about half a volt or less. >>> >>> Thanks for your ideas all and I appreciate them continuing to come. >>> >>> Bruce in Winnipeg >>> >>> On Sunday, January 31, 2021 at 9:33:23 PM UTC-6 Ira wrote: >>> >>>> Hello winnipegger65, >>>> >>>> >>>> Sunday, January 31, 2021, 4:12:39 PM, you wrote: >>>> >>>> >>>> Thanks as always for your thoughts Ira, >>>> If it's really bouncing around then it would seem to follow there are >>>> bad contacts in the pressurestat. If you jumper the supply and steam >>>> boiler >>>> wires does it get hot? Pay attention, because the pressurestat is the >>>> thermostat on the steam boiler, so don't walk away. >>>> >>>> -- Ira >>>> >>> -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/brewtus/f4cfef34-553c-4df1-b65c-d4b4fbde9a84n%40googlegroups.com.
