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    Sime Super Format 100 E

    So I will talk to myself. 24 hours and no red light. This fault must be on someones list. Please give me a clue. :idea: Or, somewhere to get a circuit diagram. Thank in anticipation Flounder
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    SIME Format 100E Circuit Diagram

    Thanks gk But my filing system has not produced it :oops: . Hence the posting :shock: Do you know of a site that might help? Regards. Flounder
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    SIME Format 100E Circuit Diagram

    Any ideas where I can get the circuit from. This boiler sometimes will not fire up, has a red light until I turn the control clockwise, then it is ok for a while. Help apreciated .. Flounder
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    Do I Need A Room Thermostat or TRV's (or Both)?

    Well said Felix. Fit a room stat, otherwise when the rads shut down the the water cannot cool the boiler jacket. The dynamic range of the gas jet is not much and it cycles constantly ... Flounder
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    overheat stat

    What purpose the bypass? If the rads shut down there is no didipation therefore the mad hot water goes back to the jacket which relies on the overheat stat. hence the constant cycling on/off. :wink: IMHO Flounder
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    overheat stat

    Hi Croydon' I have come across many installations that use only radiator stats, no room stats. Consequently when the radiators shut down and reduce the circulation the boiler overheats and its stat operates. It irritates me when at my brother in laws to listen to the constant cycling of the...
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    BTU Calculator

    Best to oversize, if it looks good. You can always turn it down but not up. Also if there are kids about a big radiator runs cooler. :idea:
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    Can't undo radiator nut

    Perhaps a bit of heat, a blowlamp would soften the seal. If there is not much water in the pipe Regards Flounder
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    Sime Super Format 100 E

    An Intermitant fault! Sometimes will not fire up but the pump is running, also a red light is on, above the normal green one. If I turn the main control knob to the 1o'clock position it fires up and the knob can then self centre. It can be ok for weeks then just before we decide to go away it...
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