montasser charni
Hi Barbara The hot water cylinder must be contaminated with sludge ,you did not say if the cylinder is a direct or indirect as knowing Which is essential to determine what exaactly lays the faults .The next step will be a completely (free of charge ) site survey visit . I hope this answer has clarified what could be wrong with your hot water cylinder ,and if any further assistance will be needed then please do not hesitate to be in touch . Kind regards
