Fitting the correct type of shower head is critical to the safe performance of your electric shower.
Some shower heads are only suitable for use on mixer showers as the flow of water from them can be restricted or stopped altogether, resulting in a build-up of potential hot water which could, under pressure, be unexpectedly released and result in damage to your electric shower and put you at risk of injury.
Please do not replace your own shower head, unless it’s for the correct type specified by the shower manufacturer.