Recent content by Peter Slawson

  1. P

    Control system mystery

    Thanks for your guidance I've checked the output and the controller is duff. Ordered a new one. Cheers Pete S. Just in case anybody is following this it wasn't the controller but the CH control valve. I bought a new head but that made no difference BUT EXERCISING THE VALVE ITSELF DID!!! Got a...
  2. P

    Control system mystery

    The QE2 is only two or three years old a replacement for an old mechanical one. Do they develop faults like this could be? Cheers P
  3. P

    Control system mystery

    The QE2 is only two or three years old a replacement for an old mechanical one. Do they develop faults like this could be? Cheers P
  4. P

    Control system mystery

    Hi. There is no live feed at the boiler when boost is pressed nor advance nor constant. However I ran the hot tap for a while when on constant and at first no joy then 5 minutes later boiler fired up. Once this happened boiler would fire on boost and advance. Could it be a sensor in the hot...
  5. P

    Control system mystery

    Thanks for that. I'm away at a funeral but will check tomorrow. Cheers Pete S Am home now, heating is on on timer. Just a thought: When I press boost on the warning light comes on. Is that sufficient or do I need to check for voltage at the boiler? grateful for your thoughts Pete S
  6. P

    Control system mystery

    I have an oil fired pumped CH system that has worked fine for years. Recently the system has stopped reacting to boost or advance requests on the Grasslin Towerchron QE2 controller but still is fine in normal timed mode. I say stopped but sometimes after a very variable time the system does...
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