This question is regarding Mira Sport 10.8kW - post 1998 - Shower Spares

Overheat light coming on and remaining on

Orginal issue was that there was not hot water on any setting and the overheat light was always on with medium and high heat settings. I have purchased from you and replaced the heater tank and control value. Now have hot water for several minutes but the overheat light comes on and remains on. If shower switched off and left for a while then used the water is heated and then overheat light comes on remains on, as above
Asked 11 years ago by Anonymous

It sounds like there is insufficient flow

 

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 then it starts to heat again and so on.

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 may want to check with your water authority you need a minimum of 1bar to operate the shower, itm is possible that they could have the pressure turned down


 

Answered 11 years ago by The Shower Doctor

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