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Discuss Faulty new Honeywell valve? in the Valves & Taps area at PlumbersForums.net

Jones82

Gas Engineer
Hi guys just exploring a possibility

I’ve replaced a 3 port valve and it’s passing into the heating circuit when hot water is on. Could an electrical fault cause this problem? There is no call for heat on the heating circuit, proved with my multimeter. The heating pipe work next to the valve is barely warm so definitely not open. Just passing ever so slightly.

I’m leaning towards a possible reverse circulation. Caused by a diy addition to the heating system, the heating return for two rads in the loft may be piped in too close to the cyclinder return.

Just wondered if anyone had ever had an electric fault that caused this symptom.

Ah one more fact it’s a 3 port and a 2 port on the supply to the unvented cylinder just incase that’s relevant. Once again. There is definitely no 240 voltage on the heating wiring
 

ShaunCorbs

Staff member
S. Mod
Plumber
Gas Engineer

ShaunCorbs

Staff member
S. Mod
Plumber
Gas Engineer

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