Aqualisa Quartz Electric Shower Fault - Identify Part

Kippo · Mar 12, 2019

Hi All

I have an issue with my shower and I suspect it's the solenoid.
The original fault is that the shower either wouldn't switch on at all, or it very briefly powers on, see video

I removed the front panel and as you can see below, manually pressing the plastic arm starts the water flowing, and it is heated too (i know the danger of using the shower in that state whilst live) so there is no issue with power reaching the unit.

I suspect that the faulty part is the solenoid, but is the part (arrowed below) actually the solenoid, as it doesn't look like other I've seen?

[ElectriciansForums.net] Aqualisa Quartz Electric Shower Fault - Identify Part

And if so where can i purchase a replacement? P/N FW343A1P1

Many thanks

SparkyChick · Mar 12, 2019

Given when you press the button it momentarily engages the solenoid, my initial thinking is more geared towards water pressure, specifically it could be slightly low.

I might be inclined to find the main stop tap and turn it to open it slightly more. Trying this will cost you nothing and may well solve the problem.

MJPD29 · Mar 12, 2019

This is the best and most detailed post I've ever seen congratulations

Midwest · Mar 12, 2019

I'd just ring the manufactures help line

Wilko · Mar 12, 2019

Hi - by the looks of it the solenoid works, but is not held in. As per @SparkyChick I suspect the pressure / flow is insufficient. Maybe clean the filter? It's a maintenance activity in the manual and should look like this -

pirate · Mar 12, 2019

I'm with Midwest on this one. I had an Aqualisa for the last 15 years and found their service chap absolutely brilliant. (Thanks, Chris!)
Their service contracts/warranty offer is first class, and while I have had only a couple of breakdowns they fixed and replaced the unit without quibble. The last time I called Chris out due to intermittent working he plugged in a computer, saw the number of false starts, checked the serial number, said it was a controller from a known faulty batch and it was completely replaced.

Kippo · Mar 13, 2019

Thank everyone for your help so far, i'll check the water pressure and filter tonight when i get home.

Cheers

Baddegg · Mar 13, 2019

Wilko said:
Hi - by the looks of it the solenoid works, but is not held in. As per @SparkyChick I suspect the pressure / flow is insufficient. Maybe clean the filter? It's a maintenance activity in the manual and should look like this -

View attachment 48286

Wilko you are the Manual king!

snowhead · Mar 13, 2019

Aqualisa Quartz Shower Not Working – How to Fix It | eat more toast - https://www.eatmoretoast.com/aqualisa-quartz-shower-not-working-how-to-fix-it/

DPG · Mar 13, 2019

Love this thread. A well worded question with not just photos but video attached, and then helpful replies afterwards. Brill.

OP, keep us posted.

static zap · Mar 13, 2019

Does look like a Posh solenoid , compared with many others !

Wilko · Mar 13, 2019

Baddegg said:
Wilko you are the Manual king!

I was in IT, then I would be learning to be king of WAN

Kippo · Mar 28, 2019

SparkyChick said:
Given when you press the button it momentarily engages the solenoid, my initial thinking is more geared towards water pressure, specifically it could be slightly low.

I might be inclined to find the main stop tap and turn it to open it slightly more. Trying this will cost you nothing and may well solve the problem.

Sorry for the delay in replying. The water pressure seems plentiful and the main main stop tap is fully open, I have also checked the internal filter and there is no obstruction.

I've uploaded another video. you can see the solenoid engaging but then releasing again.

It's possible that this could this be an issue with the microswitch circuitry but i'm still inclined to think its the solenoid.

Midwest · Mar 28, 2019

Have you rung the manufactures help line?

static zap · Mar 28, 2019

It has a computerised brain ,if it functions at all .(Then a decision is being made Right or WRONG ) Safety is king.
Is you kettle well furred up in your area ?