Rancilio error codes

14 documented Rancilio error codes, with meaning, probable causes and a guided diagnostic tree in the app.

HorecaIQ

• E00/E128/E129 — Board Communication Fault / External Boards Not Responding
• E01 — Boiler Fill Timeout / Water Missing
• E02 / E05 — Boiler Heating Timeout / Temperature or Pressure Not Reached
• E03/E04 — Espresso Boiler/Group Probe Fault — Short Circuit or Open Circuit
• E04/E05 — Steam Generator Overtemperature / Boiler Overheat
• E06 — Water Softener Exhausted / Scale Buildup in Boilers
• E09-E15 — Internal Power Supply Missing or Short Circuit (5 V / 12 V / 24 V)
• E19 — Boiler Overpressure / Safety Valve Release
• E20 / E03 — Boiler Safety Level Intervention
• H2O — Water Main Pressure Below Threshold / No Water Supply
• W01 — Group Head Dispensing Timeout / Flowmeter Error
• W04/W05 — Steam Wand No Output / Low Steam Pressure
• W20-W49 / W200-W226 — Solenoid Valve Line — Interruption or Short Circuit
• W92-W109 / W140-W153 — Group Temperature Probe Line Diagnostics (Interruption / Short / Setpoint)

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