This question is regarding Mira Azora/Sprint/Sport/Zest Thermal Cut-out (TCO) - 416.41

Mira elite 2

Hi guys a friend has ask me to have a look at his shower the fault is shower will run fine for 5 minutes or so then gos cold then heats again then cold again and so on I have cleaned shower filter , head and hose of all lime scale there really wasn't that much as he has a hard water filter all electrical connections same fine good power supply and good water supply do you think the problem lies with the thermal switch or another fault any help would be much appreciated
Asked 11 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/stabilizer valve not allowing the correct amount of water into the shower.

A rough check is to remove the shower head turn temperature control to fully hot the water coming out of the hose should be a bit more than a dribble then turn to fully cold and it should be coming out at full flow.

If there is not much difference between the two then you could have a faulty flow valve.

Carry out this check after you check the inlet valves.

Answered 11 years ago by Anonymous

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