Hi everyone,
I'm trying to repair a COSORI Dual Blaze Air Fryer (CAF-P583S-KEU) that shows an E01 error (temperature sensor open circuit).
**Root cause found:**
Upon inspecting the control board (SP01AF-C-V2.1P2.1), I discovered a missing SMD component on the ADC/NTC lines. The NTC1 and NTC2 lines each have a component marked "30B" in the same position, but the ADC line is missing this component and also I guess 3 diodes (TVS - transient-voltage-suppression) entirely.
**My questions:**
1. What does the code "30B" represent in SMD marking? Is it 3.0Ω or 30Ω?
2. What package size is likely used here (0402 or 0603 or something else)?
3. How about the TVS diodes?
I have attached close-up photos of the board showing the missing components location.
Thank you in advance for any help!
AI: Can you measure the resistance/continuity of the existing “30B” components on NTC1 and NTC2, preferably at least in-circuit, and share the values?
2 kOhm
AI: Can you provide the physical dimensions of the “30B” component pads and the missing TVS diode pads, or a close-up photo with a ruler/caliper for scale?
The photos are attached.
