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EA

EA fault code flashing on display — No gas, blocked condensate, or blocked flue.

Worcester Bosch · Greenstar i ErP Boilers

What does EA mean?

The appliance displays an EA fault code and the blue operation/fault light flashes. This indicates a problem with the gas supply, a blocked condensate pipe, or a blocked flue.

Common Causes

  • No gas supply or low gas supply pressure to the appliance.
  • Condensate outlet blocked, possibly due to ice or foreign objects.
  • Flue is blocked or damaged.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Contact your gas supplier to check for any issues with the gas supply.

  2. 2

    If it is safe to do so, check the condensate pipe outlet for blockages, such as ice or foreign objects.

  3. 3

    If it is safe to do so, check the flue outlet for any damage or blockages.

  4. 4

    Press the reset button once briefly. If the fault persists, contact Worcester, Bosch Group.

Browse all codes in this manual (6)
Verified technical data. Last updated: April 2026

Related Faults

Blue light flashingBlue light flashing — Possible fault alertBlue light flashing / Alert symbolBlue light flashing and Alert symbol on display — Appliance fault detected.No blue lightNo blue Operation/Fault Indicator demand light — No heat demand or power issue.
Source: Worcester Bosch Greenstar i ErP Boilers
Open Manual (Page 24)Search more codes in this manual