Pressure Switch Problems

Hi all,

 

I've got a 6 year old La Pavoni Bar T 2 group machine that has run great since getting it new.  Two weeks ago I found that I had no pressure due to a worn out pressure switch.  The switch was charred and you could see the contacts sparking when it switched on and off.  I replaced the switch and now only 2 weeks later the new switch is also burnt up.

 

My question is, what is most likely to be causing this?  Am I most likely looking at a bad heating element, or a bad contactor?

 

Any thoughts or insight would be appreciated.

Thanks,

Mark

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