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Shower runs very hot then overheat light kicks in, then runs cold

This question is regarding Mira Sport Max Shower Spares

my shower is running with good flow of water but very quickly gets much to hotthen the oerheat light turns on and water then runs cold as soon as overheat light turns off the water then becomes very hot again

Asked 9 years ago by Ann Farr
The things to check first are.

1 That the main valve coming into your house is fully open.

2 Then check that the valve on the line to the shower is fully open.

If these valves are not fully open then there may not be enough water
getting to your shower to cool it properly the overheat safety device will turn
the power off until it cools Then it all starts again Make sure that the shower head is clean and clear, that the hose isn’t kinked (this can happen just behind the hand set where it is difficult to see) also check the inside of the hose although it can look OK on the outside it could have collapsed internally

If all of these are OK then you need a new flow valve Here is the Link. www.showerdoc.com/shower-spares/mira/electric-showers/MIRA-1563-508-Flow-Valve-Assembly-10-8-kW
Answered 9 years ago by Anonymous
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