Printer Failing Z-Axis Test With No Error Message
I had an issue with my printer failing the nozzle heating test which turned out to be as simple as removing the silicone sock. Prusa directed me in the first instance to test the resistances of various parts in the electronics box using a multi-meter, and by the time I solved it, the Z-Axis test suddenly started failing every time.
I figured it was probably me not tucking the wires in properly when putting the electronics box, but I revisited it very carefully today and the issue is still occurring.
The Z-Axis moves fine manually, the leadscrew seems clean and greased, the Z-Axis even moves completely through it's highest and lowest point fine during the test, and when using manual axis movement via 'Move Axis'.
The test seems to run through to the end, when the Z-Axis has moved all the way up, and then fails as soon as the nozzle reaches it's lowest point near the bed. I've tested the Prusa sensor and it is working and detecting metal correctly.
I've tried changing the Live-Z too - anything 0.5~ and below causes the aforementioned failure - whereas anything higher than that causes the test to fail as soon as the axis reaches the topmost point.
I've just run a factory reset, updating the firmware from 6.1 to 6.2 but the issue is still occurring. I would be grateful for any advice please, this is really frustrating, mainly due to the absence of any error codes or messages.
For clarity, the printer has a few upgrades includes a bondtech extruder and Phaetus (dragonfly?) nozzle. This error has never occurred on any of my printers before
RE:
Update: Contacted Prusa support as I'm truly lost on this issue - they mentioned that it's likely that something in the 'Experimental Settings' needs to be changed to account for the nozzle being different to the default prusa nozzle.
There does seem to be a setting for the 'Z Axis length', which seems promising. Sadly, Prusa support couldn't help me further since it's a third-party nozzle - so I've contacted Phaetus with the details. Prusa mentioned it's likely that Phaetus provided these setting adjustments when the nozzle was purchased, but unfortunately, I bought the printer when it already had the nozzle installed.
Will post here with an update shortly.
RE:
Update: Sorry for the delay. Phaetus took a week to reply (and a chase up email) despite their 24 hour response claim.
Anyway, they seemed a bit clueless about the situation, which I was surprised about.. they just asked me to check the sensor was at the right level, which I believe it is - I lowered the Z axis manually (with the power off) until the nozzle just touched the bed, and the sensor seemed to be around 1mm away from the bed, which Prusa recommends.
Sadly I feel like I'm back at square one with this, and doubting if it's even an issue with the nozzle or settings after all.. this printer has now been out of action for around two weeks so if anyone here has any advice I'd be really grateful please.