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Error in Cold junction temperature (Internal Temperature) Reading

Thread Summary

The user is experiencing a ±10°C error in the internal temperature reading of the MAX31855 K-type Thermocouple IC, leading to inaccurate thermocouple readings. The support engineer suggests visiting the Analog Devices technical support pages for further assistance. No specific technical solutions were provided in the final answer.
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Category: Hardware
Product Number: MAX31855

Good afternoon, 

I am using MAX31855 K type Thermocouple IC for Thermocouple application. I have mounted IC on my Custom STM32 Board, Thermocouple IC internal temperature is reading with +/- 10 degree error. Eg: If room temperature is 22degree, IC internal temperature is reading 31 degree. Due to this , my externally connected thermocouple reading is getting error.

Please suggest how to solve it

Thank You.