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Room temperature too high

Desired room temperature exceeded — Heating is too strong

Worcester Bosch · Greenstar Boilers

What does Room temperature too high mean?

The room temperature is significantly higher than the temperature set on the thermostat, leading to overheating and discomfort.

Common Causes

  • Thermostatic radiator valve(s) or room thermostat set too high
  • Programmer is incorrectly set or heating stays on for too long

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn down the setting on your thermostatic radiator valve(s) and/or room thermostat.

  2. 2

    Check your programmer settings to ensure it is not set for continuous heating or an excessively long period.

  3. 3

    Reduce the temperature setting on the boiler (note: this may affect the hot water cylinder temperature).

Browse all codes in this manual (12)
Verified technical data. Last updated: April 2026

Related Faults

Blue light Fast flashBlue light Fast flash — Hot water not working (central heating OK)Blue light Fast flash 2 pulsesBlue light Fast flash with 2 pulses — Boiler not responding to any demandBlue light Fast flash 5 pulses, Reset button FlashingBlue light Fast flash with 5 pulses, Reset button Flashing — Ignition lockout
Source: Worcester Bosch Greenstar Boilers
Open Manual (Page 87)Search more codes in this manual