P2S Active Chamber Heater

Updated 2026.2.18

Made some updates based on feedback from the comments section

• Added a time-delay relay module so that after reaching the preset temperature, the heating block powers off and the fan continues to operate for a delayed period
  • Time-delay relay link Model GM-1101-3A
  • aliexpresslink1  link2 
• Optimized the heatsink position and airflow design to reduce heat accumulation in the heatsink

• Updated wiring diagram

  

  
  
  ——————————————————————————————————————————————————————————
  Printing ABS caused warping issues, and modules with variable airflow channels occupied the space for existing chamber temperature solutions on P1 and X1, so I had to make one myself

Key features of this solution are as follows:

• Fixed using the original auxiliary cooling fan mounting points, glue-free, sturdy, and removable
• 300W heating power, fast heating, chamber temperature increased from 20℃ to 55℃ in just 20 minutes using only the heater
• Bottom-angled downward airflow channel to minimize impact on the print bed surface
• Low cost, pure 220V solution, total cost is only equivalent to the price of a single power supply for a 24V solution

Bill of Materials:

• 220V W3230 digital display temperature controller * 1
  • 【Taobao】https://e.tb.cn/h.SuexYSHFyrfixGj?tk=DKZ5f9pL0aA HU108 "W3230 High-Precision Digital Temperature Controller Module Thermostat Switch Mini 12V24V/AC220V"
    Click the link directly or search on Taobao
  • aliexpress
• 220V 300W PTC heater * 1
  • 【Taobao】https://e.tb.cn/h.SG36mN9ddAHizqW?tk=dATBf9pp6FD HU591 "220V Insulated Ceramic PTC Electric Heater Air Thermostatic Fast Heating Element Warm Air Blower Accessories 96A1"
    Click the link directly or search on Taobao
  • aliexpress
• 220V 9733 centrifugal fan * 1
  • 【Taobao】Four times compensation for fakes https://e.tb.cn/h.SueCk7WVpLiUVwa?tk=UIn7f9pp6xX HU108 "EC AC Cooling Fan 9733 12032 Centrifugal Turbine Blower Wide Voltage 110-220V Large Air Volume"
    Click the link directly or search on Taobao
  • aliexpress
• M3*8 flat-tail self-tapping screws * 7
• M4 plain nuts * 2
• M4*40 screws * 2
• 2-in 6-out terminal block * 1
• Some 0.75 sq mm electrical wire
• National standard plug * 1
• Inline switch component * 1 (optional)