Mira sport max overheat

Overheat light on constantly. It has been intermitant over the last week where the water temp would go hot and the light would come on, but it would correct itself after a short time. Now the light is on all the time and the water is cold. Have good water pressure through the shower. I have checked the black TCO on the top after reading other questions and there is power on both terminals. What else can I check?
Asked 12 years ago by Anonymous

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

The other possibility is a faulty flow valve not allowing the correct amount of water into the shower, if all the above are OK then you will need to replace the flow valve.

 http://showerdoc.com/shower-spares/mira/MIRA-1563-508-Mira-Flow-Valve-Assembly-10-8-Kw-1563-508

Answered 12 years ago by The Shower Doctor

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

The other possibility is a faulty flow valve not allowing the correct amount of water into the shower, if all the above are OK then you will need to replace the flow valve.

 http://showerdoc.com/shower-spares/mira/MIRA-1563-508-Mira-Flow-Valve-Assembly-10-8-Kw-1563-508

Answered 12 years ago by The Shower Doctor

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