exhaust_filter is running when it shouldn't
Closed this issue · 5 comments
Klippain branch
- I confirm using the main branch
Version
v4.3.1-11-g4ff6f5b4
Describe the bug and expected behavior
The exhaust_filter is supposed to regulate the chamber temperature to a target temperature and/or filter the exhaust air after a print has finished. In my case, as soon as I sat the bed temperature to 100 degrees, the exhaust fan started working, and I had no control over it. I tried bed and chamber soak too, but I kept getting the same result. This prolongs the heatsoak duration.
Additional information and klippy.log
No response
Hello,
wanted to say the same as a feature request. I understand that there are users who don't have a dedicated filter so they want the fan on constantly but I only want it to control temperature.
Maybe a chamber_temperature_fan.cfg besides the exhaust_filter one.
This snippet from my overrides can be used as a base and as workaround for the time being for ticket creator
[temperature_fan chamber]
pin: <FAn_PIN>
max_power: 1.0
shutdown_speed: 0.0
kick_start_time: 0.2
sensor_type: ATC Semitec 104GT-2
sensor_pin: <pin_name_chamber_temp>
min_temp: 0
max_temp: 70
target_temp: 0
max_speed: 0.7
min_speed: 0.1
control: watermark
max_delta=3.0
gcode_id: C
@24naret please create a Feature Request instead of hijacking a similar sounding issue. You can also create an own PR with your idea :)
@kgalilio the exhaust fan is a filter fan which is used to have a low underpressure in the chamber so that the fumes are going through the filter instead of siphoning through other holes etc. therefore it must run all the time. It is not a temperature regulator. If you need a chamber heating regulator, you would need something like ellis bedfan or multipurpose the nevermore filter, which have an innnerchamber circulation air flow.
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