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No specific code

Hot water temperature too high — Water is excessively hot.

Worcester Bosch · Greenstar i ErP Boilers

What does No specific code mean?

The domestic hot water coming from your taps is too hot. This can be caused by the appliance settings or the water flow rate.

Common Causes

  • Temperature set too high on the appliance controls.
  • Water flow at the tap is too low.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the hot water temperature setting on your appliance controls and adjust it down.

  2. 2

    Increase the flow rate at the tap.

  3. 3

    Ensure no other system settings are causing the water to overheat.

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.EAEA fault code flashing on display — No gas, blocked condensate, or blocked flue.
Source: Worcester Bosch Greenstar i ErP Boilers
Open Manual (Page 24)Search more codes in this manual