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Worcester Bosch Greenstar CDi Classic System ErP fault C6

Fan speed too low

Gas boiler

What it means

The fan speed has been detected as below the required operating speed.

Likely causes

  1. Faulty fan lead or connector
  2. Faulty fan

Where to start

  1. Check fan lead and connector
  2. Check fan

The full answer, free

  • How to put it right, step by step
  • The manual page for this fault (page 52), right under the answer
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Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.

From the Worcester Bosch manual for the Greenstar CDi Classic System ErP. Check the model on the data plate before you order parts.

Other Worcester Bosch Greenstar CDi Classic System ErP fault codes