Machine displays ER09 and will not brew; may show water flow issues

Safety: Unplug the machine and allow it to cool fully. Do not attempt to run the heater without confirmed water supply.

• Restore water supply:
  • Fill the water tank completely and ensure it is properly seated.
  • Remove any clogged water filter and test without it.
• Clear scale:
  • If the machine will allow, run a full descale cycle using Sage-approved descaler.
  • Repeat if the water flow is still weak, as heavy scale can require multiple treatments.
• Reset attempt: After cooling and descaling, power the machine back on. If ER09 clears but returns quickly, the thermocoil may be partially blocked or its sensor faulty.
• Internal inspection (advanced):
  • Access the brew thermocoil and check for kinks in hoses and signs of overheating.
  • Inspect the thermocoil temperature sensor and thermal fuse for damage.
• Repair: Replace the brew thermocoil assembly if it is heavily scaled internally or has overheated. Replace associated sensors/fuses as needed.