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Hi I have a Grohetherm Wireless 36022 Shower unit. I am not getting any hot water out of the shower although there is hotwater to all other taps. The unit turns on and flashes as normal but never gets to the default temp of 38degrees infact the water temp doesnt change at all from ice cold. The remote displays LIMIT and 38 degress keeps flashing. The main controller is located in the loft approximatly 2.5m from the hotwater tank. the hotwater pipe feeding the unit seems to cool down about a meter up from the tank. I have reset the unit and powered it off and back on. Any ideas?

Posted by mags_mcgran on


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Tony T

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Check the pressure on the cold feed, if it is way higher then the hot it will not allow the hot water side to go into the mixer, try reducing the pressure on the cold feed. if that does not work, the Hot flow control valve may be faulty, i.e. the flow can not be reduced to allow the mixer to work within the limits.

Posted on Mar 01, 2020



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Did u get the sorted as we Are having the same problem ?

Posted on Aug 03, 2011


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