Opal Low pressure light flickering

First the low pressure light started to flicker on medium setting and then staying on, now it is doing it on high setting. It usually clears after its been on a while. Sometimes you have to turn it off and on again to get it to clear.



I have had the front cover off and the white plunger is switching the micro switch on the pcb, so there seems to be enough water pressure.



I also noticed that there are two switches on the PCB that switch on and off according to which switch, low, med or high are pressed. I noticed that the top one makes a green flash quite a lot. (one with a copper coil next to it)
Asked 12 years ago by Anonymous

The first things to check 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 open the pressure switch therefore no power will get to the elements

and the unit will show low pressure.

 

Forgetting about the temperature turn the shower from fully hot to fully cold at fully hot you should have not much more than a dribble coming from the hose and on fully cold you should have a good strong flow, if you do not have this difference then you may have a faulty flow/stabilizer  valve

 

Finally when you turn the water on, the top of the flow valve should rise, there is a plastic actuator on top of the valve this should press against a micro switch at the bottom of the PCB make sure they are properly aligned.

 

If all these are OK then you probably have a fault with your PCB.

 

The checks don’t guarantee that you have a faulty power PCB however they do eliminate just about every thing that could cause the low pressure fault and so the only thing left is the PCB.

 

Answered 12 years ago by The Shower Doctor

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