Turbomax Plus 824E

[bigcheese]

I hope I have posted this in the right place. Apologies if I havn't.

Has anyone had intermittant problems with hw on these. I went the other day and it was working fine on arrival. I told him to monitor it and ring me if it started again. I suspected the shower was faulty as the taps seemed fine. I was thinking either Air pressure switch or Aqua Sensor, but to be honest I havn't seen many of these boilers so thought I would get some words of wisdom from you guys first.

There are no fault lights from what I remember. The right hand light flashes to show there is a demand, but doesn't fire up.

 

[Anton]

If you have the MIs for this boiler you can access the Status modes in the display, these show the current operating status of the boiler. These codes in the display will show at what stage the boiler is stuck at may help with your diagnosis. The codes and what they represent will be listed in the MIs.

 

[Ermintrude]

It's the micro switch? Works better with higher flow rate?

 

[Anton]

It's the micro switch? Works better with higher flow rate?

This model is the one with the 'Hall Sensor' for detecting hot water flow. No diaphragm operated micro-switch on it.

 

[bigcheese]

I contacted Vaillant who said it will either be a blocked plate or the NTC sensor. I can't access status modes as I'm not going back until Monday. I was just after a bit of a heads up as it was fine the other day on the taps, but a bit iffy on the shower. I rang the customer earlier and asked him to turn the preheat off. It fired straight away after that.

 

[Ermintrude]

Ah sorry me ald fruity. Possibly guff in sensor.