3-way valve for Samsung HT Quiet and DHW

[Lakee (Tony Lake)]

I was referring to the ESBE VZD above, which is a 2-point controlled valve, with a switched live >B17 to change its position for DHW and a permanent live >B16 to move it back. Neutral >B15

This may help…

Heat pump DHW sensor diagnostic tips?

Just to help clarify and hopefully not confuse! There are basically two types of 3 port diverting valves - Spring return, these have a neutral and switched live, which switches the valve to the DHW position, then the spring returns it back to the HTG position when switched off. The other type is a MOMO valve (motor on/motor off), these have a neutral and two live wires and could be either 2-point or 3-point controlled. The 2-point has one switched and one permanent live, the switched live will g…