Worcester Bosch Greenstar 30Si breakdown / service

I was called to a boiler problem the other day. Boiler in question – 5 years old Worcester Bosch Greenstar 30si. Client was complaining that boiler would only fire up at full rate. Other symptoms included: explosive ignition, noisy combustion and going to lock out if boiler tried to modulate down. Faulty part below.

 

Fault got quickly diagnosed and fixed.

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