MichaelOToole
Well-known member
A couple of print failed with hotend temperature errors (something like hotend temp out of range).
One additional fail due to hotend temp over max when it wasn't.
Here is an image of the temps for the failed print:
As you can see the temps vary quite a bit, normally it's a straight line with little deviation...
I redid the pid tuning just in case... it had changed a little from previous values...
Basically, a few minutes into a print, temperature appears to fluctuate by 10° or more within a second or two (which is not actually possible).
At some point temps must drop below whatever the lower limit is set to so print job halts.
It looks like the heater or more likely (almost certainly), the sensor/thermistor is close to failing, so I ordered a replacement.
Could not find the HeaterCore sold separately so bought the Revo Hotend Starterkit...
I assume this is the HeaterCore contains both the heater and thermistor as it has 4 wires?
The Starterkit kit includes:
If the issue is either the Revo heater or thermistor, that's not saying much for E3D's Revo longevity...
I have much less expensive heater/thermistor combinations working for more than 5 years with far more prints completed.
I need to search for alternatives, but I like Revo
One additional fail due to hotend temp over max when it wasn't.
Here is an image of the temps for the failed print:
As you can see the temps vary quite a bit, normally it's a straight line with little deviation...
I redid the pid tuning just in case... it had changed a little from previous values...
Basically, a few minutes into a print, temperature appears to fluctuate by 10° or more within a second or two (which is not actually possible).
At some point temps must drop below whatever the lower limit is set to so print job halts.
It looks like the heater or more likely (almost certainly), the sensor/thermistor is close to failing, so I ordered a replacement.
Could not find the HeaterCore sold separately so bought the Revo Hotend Starterkit...
I assume this is the HeaterCore contains both the heater and thermistor as it has 4 wires?
The Starterkit kit includes:
- 1 x 0.4mm Revo Nozzle Brass
- 1 x 0.6mm Revo Nozzle Brass
- 1 x 40W Revo HeaterCore with spring 24V
If the issue is either the Revo heater or thermistor, that's not saying much for E3D's Revo longevity...
I have much less expensive heater/thermistor combinations working for more than 5 years with far more prints completed.
I need to search for alternatives, but I like Revo
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