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  1. S

    Relay Help!! 24v to replace 18v?

    Hello Everyone, I am trying to repair my vaillant motherboard (711451) out of my combi boiler, the fault is simple, one of the relays on the circuit board is worn out, the problem I have is trying to find a relay that I can replace it with! The relay on the pcb is a Schrack RP489018 18V 8A 250V...
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