Pressure gauge on front of boiler on zero?

under your boiler there should be a cold water infeed pipie with a inline tap, open this tap slightly and you will hear the water flowing into the system, watch the pressure gauge on the control panel and close the tap when the pressure reaches the indicator set point (usually set around 1Bar) make sure all radiators are bled of air and recheck water pressure and top up as above instruction.

Ronnie
June 2007