Last November my Expobar Brewtus started tripping the kitchen outlet ground fault interrupter. I traced the problem to the boiler heater. I measured about 14 kOhms from the heater terminals (with wires removed) to the chassis. I installed a new heater coil from WLL (http://www.wholelattelove.com/Expobar/expobar-38012001.cfm) and everything has worked fine for about a month. But today the machine is tripping the GFI again, and amazingly my NEW heater coil again has electrical leakage from the power terminals to the chassis. This time it's about 1.8 megOhm, but that's still trips the GFI. There of course should be (near) infinite resistance and no current flow from the heater power connection to the chassis. As a cross check, I left the heater disconnected, turned on the machine, and did not trip the GFI.
Is this just a bad replacement heater? It was OK for more than a month. Is there some other internal problem that can make this happen, like possibly the boiler is not full and the heater is over heating? My wife always keeps the plastic tank full, and of course the machine shuts off when that tank empties anyway. All seemed to work fine for a month until this ground fault recurrence. There was no evidence of water leaks when I opened it up. I'd hate to order ANOTHER heater and have the same problem in another month. I fear that the next heater will probably be from the same batch of parts and do the same thing. FYI, my machine is a single boiler Brewtus. Any help/advice would be greatly appreciated. -- 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 post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/brewtus. For more options, visit https://groups.google.com/groups/opt_out.
