Grohe Thermostatic mixer temp problems

Hi,

I have just fitted a Grohe thermostatic mixer tap on my bath.
The hot water is heated by a back boiler on the ground floor and stored
on the first floor in a tank.The bath is on the ground floor ie 16ft below the hot water tank.
Pressure in downstairs taps on hot is good and temp is too hot to keep your hand under for more than 1 second on normal tap.
However when i turn the mixer tap on to hot the hottest the water will come out is approx 45 degrees ie not quite hot enough for a hot bath.
I realise there is a devise to stop you getting scolded but is there a way of adjusting the max water temp allowed through?
Do the thermostatic devices become faulty?
Thanks for any advise!!

steve124 said:

Hi,

45 degrees ie not quite hot enough for a hot bath.

Click to expand...

is it not ?
you fill the bath to 45 degrees then sit in it.
then tell me how long you can sit in it.

seco services said:

steve124 said:

Hi,

45 degrees ie not quite hot enough for a hot bath.

Click to expand...

is it not ?
you fill the bath to 45 degrees then sit in it.
then tell me how long you can sit in it.

Click to expand...

45 kelvin???

The 45 degree temp was a guesstimate of the actual temp.

When you consider the cooling effect of a cold steel bath the water temp seems to quickly fall to the stage where we have to ask someone to boil a kettle to heat it up again.

Have you a model number or name for your tap?

Hi,

No I bought off Ebay and believe its about 3 years old.

Think its a Grohe 3000 bath mounted mixer.

Just been on Grohe website and temp can be adjusted during maintenance.