Heater
Heater Faults: Temperature Spikes
Problem
The temperature has an impulse-like increase - OR - erratic temperature changes.
Solution
There is a faulty wire connection.
Replace PT1000 sensor.
If replacement does not work, replace PT1000's wire extension. The wire extension is a long wire housed in the cable chain that extends from the extruder to the Duet board.
Heater Faults: Temperature Not Rising Fast Enough
Problem
Heater starts rising in temperature. Then the Duet Web Control (DWC) throws a fault, stopping the heating process and/or the print.
Solution
Your Promega may have been placed in a drafty region.
Drafty locations (e.g. near a ceiling fan) may cause the heaters (both bed and/or extruder) to perform unexpectedly.
We recommend you enclose the Promega.
You may need to tune your heater.
Let the heater cool to room temperature.
Make sure you have some space ( estimated: 20 mm) between the bed and nozzle. We'll will be heating up the heater.
Run:
Example: A fault on heater 2.
Wait for the process to finish.
Stay with the printer. Do Not Leave the printer unattended while the heater is tuning.
Run:
Open: config.g (Located in the sys folder, in your SD Card).
Go to the last line of entire file.
Make a new line. Enter (if not seen):
If you see this warning, Ignore:
No M501 command was executed in config.g
Why:
You just entered the M501 command into the config.g. The changes to the config.g file will take effect after a restarting your printer.
Heater Faults: Heating Suddenly Stops
Problem
Everything is working fine. Then a Duet Web Console (DWC) suddenly throws this heater fault:
Solution
Your highest, allowable heater temperature was passed.
Run:
The default maximum heater temperature is 320 C.
Heater Faults: Temperature is 2000C!
Problem
My temperature reads continuously reads 2000 Celsius.
Solution
The PT1000 is completely disconnected.
Check your PT1000 cables are connected. Use the Duet Maestro Wiring Diagram to figure out which cable is that. If connected, continue.
Replace the PT1000.
Bed Fault: Not Heating Up
Problem
Your bed is not heating up uniformly or not heating up at all.
Solution
Turn OFF the printer FIRST
Check if your bed power switch is on.
Check the screw terminals that connect the bed to the Duet. Check these terminals on both the Duet side and the heated bed side. It is possible that they loosened up and are not making proper connection.
Feel the wires going into the terminals and move them around to see if they are loose. If they are open the terminal cover and screw them down tight again with a Phillips head screwdriver.
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