Hi Ben, A few possibilities I have come across before that may be relevant.
1) once had a problem where the machine only tripped out the GFI (RCD in Aus) when it was hot. Turned out that the heater element expanded and a crack opened which caused a mixture of water and electricity. I would use a multimeter meter (with clamp) to measure the current to see if it is tripping out due to high current or ground fault. 2] I have also had many instances of where water drips onto the solenoid valve (steam boiler solenoid valve in your case) and causes a ground fault. Sometimes they corrode or leak and you can see a whitish deposit around the solenoid. However I think you say earlier that you have inspected and cleaned this so maybe no problem there. Are you absolutely sure you have no leaks anywhere? Can be tricky to find because of course a small drip dries quickly on the hot surfaces. 3] as well as removing the level probe wire to test if the autofill works you can also ground it on the boiler to see if it stops filling. I would do this repeatedly when cold, when hot and see if anything interesting happens. 4] what about the pump? Is it a vibe pump? Any leaks around it? You could try disconnecting it and run through your usual routine to see if you still get a trip out. Just need to make sure your boilers are full! 5] the fact it doesn’t trip when element disconnected is pointing to the element but if it never heats up then maybe there are no leaks. How about heating it up first then disconnecting the element then do your test routine? Graeme On 1 Aug 2015, at 9:29 am, Ben McCafferty <[email protected]> wrote: > Thanks again James. Will check that too. Just replaced the power switch too. > I did find a guy close to me who repairs control boards, so if it proves to > be that I've got a good option. > Might replace the whole ground wire too--it has that black oxidation even > where I've cut it back. > I wonder if I have the patience to do the whole harness. :) > Best, > bmc > > Sent from my iPhone > >> On Jul 31, 2015, at 16:07, James Roybal <[email protected]> wrote: >> >> Check for corrosion on the power cord where it connects to the machine's >> on/off switch. Mine is younger than yours and the ends of the wire basically >> fell to pieces when I touched them. They were black from overheating and >> very brittle, those may be increasing the current the machine uses, tripping >> the GFI. I'm going to be replacing the cord with a better quality and larger >> gauge wire. >> >> -- >> 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/d/optout. > > -- > 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/d/optout. -- 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/d/optout.
