Hi,
  I ordered and replaced the SSR and the
situation seems to be resolved.  Around
the base of the original SSR was some
grease - dielectric grease I would guess.
Is there anything special I should replace
it with, or will generic dielectric grease do?

Thanks for the info, Dave.  I had supposed
the SSR functions as a switch. As expected,
the brew boiler heats if T1/L1 is shorted.

Instead, I was wondering about the mode of
failure of the SSR. I don't know the internal
composition of the device. For a while, the
heating/not heating of the brew boiler was
sporadic.  When the machine sat for a long
time, on power up the brew boiler received
voltage for a while, now and then long enough
to reach brew temperature. Once the voltage
stopped going to the brew boiler it would not
come back until the machine had sat for a
long while. If I had to guess, I would guess that
the relay would function until it had warmed up
a certain amount, or had been so warm for a
bit. But this is a very blind guess.  Does this
sound reasonable to someone who is familiar
with the device?

Also, out of curiosity, any thoughts about what
might bring about the failure of the relay?

Thanks very much to everyone for the helpful
input.

cheers,
-wb

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