!!
critical Keurig
Error Code 8
Thermistor in the Preheat Tank reads above 240°F.
? What Causes This
Problems with thermistor or heater triac.
✓ How to Fix It
Contact your Keurig Authorized Distributor as the thermistor or heater triac may be faulty.
Source: page 16 of the official manual
From the manual
This error code appears in:
Keurig Coffee Maker