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  1. hertsboilers

    Dual channel hive on Worcester 30i combi

    Okay for 240v on this boiler. Boiler L to Hive L Boiler N to Hive N Boler LR to Hive 4
  2. hertsboilers

    Any advice appreciated for condemned boiler

    OP, if it is Corgi HomePlan, call them again for a second opinion by a second engineer. How do I know? I sometimes work for Corgi HomePlan and other insurance companies, I have been sent out for such things.
  3. hertsboilers

    Quick Question from a Spark

    "N-Control-Wire is 0V" What's this? blown or blue?
  4. hertsboilers

    Central Heating does not turn off when temperature on dial met

    That is a Danfoss three port, download its instructions manual, and if you have electrical test gear like multimeter or voltage tester, pretty easy for some engineers, otherwise call a professional.
  5. hertsboilers

    Alpha cd35

    Diverter valve problem.
  6. hertsboilers

    Central Heating does not turn off when temperature on dial met

    The most suspicious part is motorised valve, stuck.
  7. hertsboilers

    Pump running continuously

    Likely one of motorised valves is faulty.
  8. hertsboilers

    Vailant ecotec Plus 438 - slow house heat up - Please help - bucks

    Thanks but can't take any new install or alternation within one month.
  9. hertsboilers

    Heating on, Thermostat off.

    What is "the flame in the corner"?
  10. hertsboilers

    Grundfos pump on continuous and boiler fires intermittently when controls off.

    Zone valve fault to give constant switched live to boiler and pump
  11. hertsboilers

    Baxi Duotec 40 HEA Hall effect Sensor problems

    Hex sensor ring, did you put it up side down?
  12. hertsboilers

    Potterton Profile 60E Refuses to fire up

    @Dan Robinson thanks for referral, I got the OP contacting me this morning already.
  13. hertsboilers

    Gas tightness test on u40 commercial meter

    If you ask these question in the CC I will tell you for sure.
  14. hertsboilers

    Powermax 155x not firing for central heating

    Air around the pump, or pump jammed.
  15. hertsboilers

    Baxi 100/2 HE Plus ignition lockout problem

    It is a right choice to get Baxi their own engineers involved for this boiler. An intermittent ignition lockout is a normal operation status of this boiler! I do boiler repairs, but I regard this boiler as the most difficult boiler to repair with, particularly for an intermittent ignition...
  16. hertsboilers

    Baxi Solo 3 50 PF Died Last Night - Repair or Replace...?

    Might just need a fan bearing cleaning and lubrication.
  17. hertsboilers

    Potterton Performa 28 problem and BG diagnosis/recommendation

    Hi 112, what about scale? I have never been able to remove scale on hot water path.
  18. hertsboilers

    Potterton Performa 28i

    In CH mode, same as DHW pre heat mode, the expansion vessel is connected to the central heating by the path I marked as red.
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