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    Vaillant ThermoCompact won't start after system refil

    I'm not sure the exact model (was in the house I moved into)- but the book says VU 142/1 E, 182/1 E, 242/1 E, 282/1 E Recently I drained the system to add two new radiators. When finished I refilled the system, but when I try to start the boiler, it won't start. When the power is turned on...
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