I have a heatslave 15/19 with a B11 burner using gas oil.The boiler has started locking out,I have connected a press gauge at the pressure port on the nozzle block and the press is initially 105psi when burner fires but decreases to aroud 80psi then lockout occurs when press falls below 75psi.
Any ideas,is this a characteristic of a failing pump?
Before anyone asks there is plenty oil in tank and filter has been cleaned at the boiler.
Any ideas,is this a characteristic of a failing pump?
Before anyone asks there is plenty oil in tank and filter has been cleaned at the boiler.