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Hot water in shower keeps going cold
The hot water in my shower keeps going cold. It starts off hot but then after a couple of minutes turns cold, turning the shower off then immediately back on heats the water up again but still goes cold after a couple of minutes each time. The shower is plumbed, not electric, and all other hot water in the house runs fine. I changed the shower head recently but only swapped the head and hose which comes out of the tap/temp control, didn't touch any of the feeder pipes etc. When the showers running the boiler fires, but turns itself off after a minute or so, as mentioned it doesn't do this with any other hot water taps in the house. Any ideas on what could be the cause?
Andy - NG10
Asked: April 27 2018
Shower thermostat needs to be Replace Harper’s Plumbers
June 01 2020
Could be the cartridge, or if the boiler combi could be the flow rate.
July 08 2020
If your shower is a thermostatic mixer the thermostat may be faulty or if a combi boiler might be blocked plate heat exchanger
January 31 2019
If the shower has filters washers on then they could have debris on them. Come across this a couple of times
February 24 2019