The handle of 850 air gun melts easily.

Incorrect thermocouple model or reversed polarity, poor quality of heating core, high ambient temperature and power supply problems.

1. The thermocouple model is wrong or the polarity is reversed: 850 air gun handle thermocouple is divided into positive and negative points. Incorrect thermocouple model or reversed polarity will lead to uneven heating of the heating core or excessive temperature, thus melting the handle.

2. Poor quality of heating core: Poor quality of heating core will lead to uneven heating or excessive temperature, thus melting the handle.

3. The operating environment temperature is too high: If the operating environment temperature is too high, the handle will melt.

4. Power supply problem: The power supply problem will lead to unstable voltage or excessive current, which will also melt the handle.