Ferroli Modena HW probs

[Koenig]

Hi,

My Modena 80e has started playing up.

Shower is Grohe 2000 mixer bar and the water gets hot, then after about 3 minutes goes for much cooler and then back to hot again and repeats. Burner is on all the time and I replaced both thermistors about 8 months ago due to same problem and the shower mixer is only 6 months old as well.

Could the thermistors have gone already (not sure if they were genuine Ferroli sensors or pattern parts) or is it something else?
CH is totally fine.

Thanks

 

[ShaunCorbs]

kitchen hot tap does the same?

and are you gas safe registered?

 

[Koenig]

Kitchen and bathroom sinks 'seem' ok.
Not gas safe, just oik. If anything more than sensors, I'll get someone in.

 

[ShaunCorbs]

Not boiler if there ok

And FYI you can't remove the boilers case without being gas safe even if your repairing the water side

Either cartridge gone or hot and cold piped up wrong to the shower

 

[Harvest Fields]

Kitchen and bathroom sinks 'seem' ok.
Not gas safe, just oik. If anything more than sensors, I'll get someone in.

Seems ok! Seems ok! But how often do you run the sink and basin hot tap for longer then 3 minutes? Leave each hot tap running on full 1 at a time. I.e kitchen first and stand in front of the boiler for 5/10 minutes to see if the boiler cuts out and comes back on again? Repeat this for the basin and the bath. Let me know if it does.

 

[Koenig]

Will do. Thanks.

 

[Koenig]

All other taps are fine and boiler runs continuously, so looks like shower mixer issue. Can the cartridge be cleaned?

 

[Harvest Fields]

All other taps are fine and boiler runs continuously, so looks like shower mixer issue. Can the cartridge be cleaned?

You can try but probably better off with a new one.

 

[Koenig]

Who's going to be cheapest to get one. Grohe 1000 Cosmopolitan.

 

[Harvest Fields]

Does this look like your shower?

 

[Koenig]

Yep, that's the fella.

 

[Harvest Fields]

Type the product code into google or go to you local City plumber/part centre.

 

[Koenig]

Thanks for you help.

 

[Harvest Fields]

No worries