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Mend 309S375 Home Heating Systems

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Mend 30 boiler fire flashing
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Worcester 30 Cadillac combi boiler won’t fire up and the EA?

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Mend 309S375

pls the value of r6 on the pcb?

my pcb is 309s375 after trying those new parts i find r6 on the pcb is burnt out.. can not find circuit diag.

louis
November 2011
309S375Heating, Home Heating Systems
Mend Heating, Home Heating Systems
Free repair help for 309S375 home heating systems
Mend Heating, Home Heating Systems

Boiler cycle?
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Mend Heating, Home Heating Systems
Free repair help for 309S375 home heating systems