My pump remains on even when the shower is switched off. What could be the reason for this?

Universal (Negative Head) Pump

If your pump has one of these (pressure vessel), then the most likely cause for the pump running is that there is a leak somewhere in the system (like a dripping tap or shower, or slow pipework leak somewhere in the system.)

The easiest way to test if this is a pump issue or a leak, is to close the isolation valves after the pump and wait. The isolation valves are on the anti-vibration couplers (hoses) attached to the pump.

If after the valve is in the off position (on both ends of the pump if it’s a twin ended pump) the pump continues to run then it’s a pump issue and you need to contact our technical desk either by calling 0191 516 2002 or emailing: tech@salamanderpumps.co.uk

If the pump does not ‘hunt’ when the isolation valves are closed, but does when opened, a weep/ leak on associated pipework after the pump may be causing the pump to cut in with no demand.

Positive Head Pump

If your pump doesn’t have a pressure vessel and is a positive head pump then use the isolative valves as shown above to switch the water to the pump off. If the pump turns off then there is a chance that water is going to somewhere in the system that it shouldn’t be e.g the vent pipe or cold water tank. If this isn’t the case then contact our technical desk either by calling 0191 516 2002 or emailing: tech@salamanderpumps.co.uk