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    Water dripping through tundish of unvented cylinder. Temperature and Pressure Relief Valve.

    Water is leaking through the tundish from the Temperature & Pressure Relief Valve on the unvented cylinder OSO Indirect 20 RI. Half a year ago it was the same and I replaced the TPR15 valve. I installed the CPT15 equivalent. Water is leaking again. No more drops but a small stream. The unvented...
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    Grundfos CH pump stops

    When I turned on the heating with the temperature controller, the Icos HE12 boiler and the Grundfos UPS 15-60 130 pump would turn on. The radiators would heat up. Unfortunately, the pump would turn off after about 25 minutes. The boiler would start bubbling and knocking without temperature...
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