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    Boiler not firing, no H/W or C/H

    Hi Matt, Thank you for all your help. Finally have it fixed. Heating engineer came on Saturday night. He put a new programmer on and also rewired the wiring centre. Hot water comes on independently as does the central heating.
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    Boiler not firing, no H/W or C/H

    With the room stat turned off and the heating set to constant we are still not getting hot water. The pump is working and the boiler fires but not hot water at the taps. I haven't connected a cable to 8 yet. So do you think a new programmer is definitly required?
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    Boiler not firing, no H/W or C/H

    Ok I'll try that. Thanks for all your help Matt. Is there a cable I need to add or should I wait for the engineer to come tomorrow night and leave it with him?
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    Boiler not firing, no H/W or C/H

    Yes when I push heating constant or the dial rotates round and the heating is set to timed the boiler fires. The water in the cylinder is cold. I put the water on constant before I left for work at 8am hoping that when I get home it would be hot but it was coming out cold.
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    Boiler not firing, no H/W or C/H

    The boiler is firing for heating only. If water is on constant and heating is off then the boiler does not flow. If the heating is turned to constant the boiler fires up. Black core goes under floorboard. room stat is Honeywell DT90e
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    Boiler not firing, no H/W or C/H

    230V between 7 and 2. 0V between 8 and 2
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    Boiler not firing, no H/W or C/H

    hi, 230v between 6 and 2 I check voltage between all sets of numbers you just gave and there was 230v at every set.
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    Boiler not firing, no H/W or C/H

    The blue is also going to 7 (orange, black and blue in 7) The blue belongs to the same flex as the Green / Yellow in 8. The brown from the same flex is in terminal 6. The above flex is from the cylinder stat. The flex with the brown in 9 is going to the Grundfos pump.
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    Boiler not firing, no H/W or C/H

    Hopefully these will show up bigger. Please note I have put the black wire from 3 into 1 on the programmer so I can get CH
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    Boiler not firing, no H/W or C/H

    I have put both cables into terminal 1 and i am getting CH but no HW
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    Boiler not firing, no H/W or C/H

    thanks, i have done that and its working. would you know what cable i need to add?
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    Boiler not firing, no H/W or C/H

    So put both cables into posistion 1?
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    Boiler not firing, no H/W or C/H

    Ok the programmer is: N L 1-CH on 2-CH off 3-HW on 4-HW off I have wires in: N L 1 3 That's all the wires I have in there.
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    Boiler not firing, no H/W or C/H

    http://media.diynot.com/143000_142552_43941_15758911_thumb.jpg http://media.diynot.com/143000_142552_43942_29621593_thumb.jpg First pic is from the back of the switchmaster SM805 Second is of the 4 (plus earths) wires i have in the programmer. plumber earlier said that there should be...
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  17. A

    Boiler not firing, no H/W or C/H

    I'll post a picture of the programmer with its wiring in a few hours when home
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    Boiler not firing, no H/W or C/H

    The springs feel very tight but there is nothing stuck etc. The little prongs only need to go up about 1mm to make the connection but the springs feel too tight
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    Boiler not firing, no H/W or C/H

    Diverted replaced today but still no change. When the programmer is switched to water and heating constant you can see the diverter mechanism moving but it is not moving far enough. The plumber is back on Saturday with an electrician as he is sure its the wiring. The programmer dial is...
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    Boiler not firing, no H/W or C/H

    ok. I have a plumber coming tomorrow to look at it. I will call him in the morning to see if he can replace parts rather then the whole thing.
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