have heatline s 24 and when the hot water is on the flow rate is very poor have checked the inlet filter and heat exchange no probs but it is as if ther is a blokage.the only thing i can think of is the diverter valve any ideas?
slow pump, Limescale in heat exchanger, \sludge in system take a small magnet (fridge) and see if it stiks to the horizontal 22 mm pipes near the cylinder. if it sticks = magnetite sludge. set pump to speed 3. feel rads, if coller at the bottom, than the top, sludge or air.
Dave.
May 2010
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.