Can I fix a D3 flashing error code on my Worcester 35cdi?
I have a flashing error code D3. Power is on and the pressure is on the green bar code. I have pressed the reset button and held it for 5 seconds. Do I need an engineer or can I fix it please?
cant find any reference for D3 fault code on that particular make & model of boiler
checked user & installation & service manual
D3 not listed at all
suggest you call worcester tech helpline
01905 754624
their advice is free
AWOL
July 2012
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Can I fix a D3 flashing error code on my Worcester 35cdi?
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