The pressure gauge black dial of my Puma 100E is stuck between 1 and 2 even after I have drained the system and re-charged it; it still did not move. There is hot water and heating OK. What could be the problem with the pressure gauge? The connection seems rusty. Can I change the pressure gauge?

udekaogu23, November 2009

u can change the gauge but first try draining down disconnect where gauge enters pipe and clear port refit and refill this might work as the port usually gets blocked with scale

sean, November 2009