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Bezzera BZ40 will not heat up - But thermal fuse and heating element work and have power!

Postby greq on Wed Jul 06, 2011 8:25 am

Guys

I need help.

My Bezzera stopped heating.

Power works.
The heating indicator light is on
Thermal fuse works
Heating Element works (measured with Ohm meter)

Water level works


I am confused! These are pretty simple circuits. I always thought if there is voltage on the heating element it should heat .

What am I missing ??
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Postby cannonfodder on Wed Jul 06, 2011 9:09 am

Not to state the obvious, but if you have power to the heating element (checked it powered on at the heater terminals) you have a bad heating element. What was the ohm reading on the element?
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Postby AngerManagement on Wed Jul 06, 2011 10:40 am

Pressure stat ? If it thinks it is HOT, the contact will not close :-)

Either Element has gone HIGH or the relay is not switching to the Element ?
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Postby stefano65 on Wed Jul 06, 2011 10:46 am

the circuit ends at the heating element,
If you have full voltage arriving at the heating element terminals
then the HE is dead
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Postby Randy G. on Wed Jul 06, 2011 11:35 am

1 - Disconnect machine from power.
2 - Remove both leads from heating element.
3 - Using low ohm function on meter, measure between the two heating element terminals. If you get something around ten to twenty ohms or thereabouts (a guess) go to 4. If not, go to 5.
4 - Measure between one heating element terminal and the metal element base plate, and then repeat with the other terminal. Should be ∞ ohms (no continuity) in either test.
5 - As Stefano stated, I think you will find that the element measures ∞ ohms (no conduction of electricity) and needs to be replaced.
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Postby allon on Wed Jul 06, 2011 1:48 pm

0 ohms is a short circuit;
I think you mean ∞ ohms, which is an open circuit.
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Postby Randy G. on Wed Jul 06, 2011 3:49 pm

allon wrote:I think you mean ∞ ohms, which is an open circuit.

Good thing SOMEONE knows what I mean! ;-) I have edited it... THANKS!
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Postby blueface on Wed Jul 06, 2011 10:15 pm

Hey Greq, what's the outcome? Any measured voltage flowing through the heating element wire leads? Measured resistance values of the heating element?
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