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Pump stopping and starting

Diggerdunne · 2017-12-27 18:48:30

Hi, I have a Grundfos pump. See pic attached.The hot and cold water in the house turns on the pump.Lately I have noticed in the shower the pump goes on for 10 seconds and then off for 2. This causes the water to get hot. It normally just runs constantly when the shower is on. It's about 8 yrs old... It does the same if I…

27-12-2017 6:48pm

#1

Diggerdunne

Registered Users, Registered Users 2 Posts: 431 ✭✭

Join Date: October 2010

Posts: 386

Hi,
I have a Grundfos pump. See pic attached.The hot and cold water in the house turns on the pump.Lately I have noticed in the shower the pump goes on for 10 seconds and then off for 2. This causes the water to get hot. It normally just runs constantly when the shower is on. It's about 8 yrs old... It does the same if I turn on a cold tap or flush the toilet.
Any ideas?

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