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yes mate,pin moving out and switch closing.cheers

i have checked the electrical operation of the switch with a fluke and the switch is working fine,cheers

my sister in laws boiler has stopped producing hot water and had a look at it for her using the fault guide in the handbook.the flow from the taps seem normal but the led does not come on when a tap is turned on.i have check the flow switch and the microswitch works as it should when turning tap...

thanks for all your help,3 days ago i brought a kilrock maintenance kit and fed the cleaner in the system.after about two hours with the heating running i tried the hot water and it seemed fine and has been so far.i will leave it in for the 3 weeks it says and then flush the system using the...

thanks guys,it's the perm pilot version and i replaced the modulation control board.the red light i am watching is on that board and lights as soon as i turn on the hot tap and goes off when turn the tap off.one other thing i have discovered is if i pull off one the wires on gv3 modulating gas...

ch thermistor measures 2.5kohms with system hot.will it be a waste of time if i try some x200 in the heating system?or am i clutching at rather large straws

thanks again.the resistance of hw sensor is 13.8kohms,the ch sensor is 8.8kohms with the appliance in an used cold state.if the system is scaled up do you mean on the ch side and would x200 help???if its the ch system scaled up why does the ch work ok???

once again thanks for replies.the hot water flow rate ia approx 8 litres per minute but the temp rise is small because the cycling keeps coming and the burner has to relight.when burning the flame keeps constant until the shuddering and then goes out.if i vary the temp knob it does seem to...

many thanks for the reply,this morning i took the flow switch apart,rubber diaphram in perfect condition,mechanism free moving.oiled them any way,put swich back together,checked microswitch operation with tap runnig on and off and every thing seems fine,boiler still has same fault.light goes out...

heating works fine,hot water runs and then the boiler starts pulsating,pressure guage goes mental and burner cuts out.relights and does the same cycle all over again.had the same problem a year ago and changed diverter valve head and pcb,problem eventually cleared but not because of new parts as...