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Strange heating timer issue

  • 27-10-2009 5:39pm
    #1
    Ba$tard
    Closed Accounts Posts: 662 ✭✭✭


    Hi folks

    Hope someone can guide me here. I have a strange issue with my oil heating timer/system.

    Out of nowhere the following symptoms have started;

    Regardless of the position of the switch (off,on,timed), the heating will stay on.
    Sometimes the trip switch that the timer is connected to (downstairs sockets) will trip.
    I replaced the timer and the same issue occurs.
    If I disconnect the red wire, which powers the clock, the heating will stop automatically coming on, ok the clock is dead. I can then control the heating using off/on. But, sometimes the trip switch will be tripped again.

    We have an external oil boiler which has a water thermostat. The timer is inside the house (just to clarify).


    Does anyone have any ideas as to what the issue could be?
    I should probably call an electrician, but if someone has pointers, I can check them out.

    Thanks in advance
    James.


Comments

  • #2
    crosstownk
    Registered Users, Registered Users 2 Posts: 12,863 ✭✭✭✭crosstownk


    Duplicated post - apologies.
    Untitled Image




  • #3
    crosstownk
    Registered Users, Registered Users 2 Posts: 12,863 ✭✭✭✭crosstownk


    Ba$tard wrote: »

    If I disconnect the red wire, which powers the clock, the heating will stop automatically coming on, ok the clock is dead. I can then control the heating using off/on.

    That's odd. On most systems, disconnecting the power to the clock will shut down the whole system. Some systems may allow a manual override of the zone valves which will allow it to operate manually.

    The live usually runs from the time clock/programmer to the thermostat and then either back to the boiler or to a zone valve at which point it may or may not be relayed via a switch in the valve.

    It might be an idea to provide the make/model of the boiler and the timer - more information may help diagnosis. Any other details of your system setup might help - number of zones, thermostats, etc.
    Untitled Image




  • #4
    Ba$tard
    Closed Accounts Posts: 662 ✭✭✭Ba$tard


    Found the issue(s)

    1) the frost stat was sitting in water!
    The air vent was leaking water, the valve to the pump - was yes, leaking water. CHECK YOUR BOILER - this is a very very common problem with the design of those vents and valves only recently.

    2) Dad wired the timer wrong - the Positive for the boiler was wried to amins not switches positive :-)


    Thanks!


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