Pump Constantly running
- Thread starter gasright
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Exactly what i thought, its at my mum and dads house and its been like this for 4-5 years (but they forgot to tell me)
Sounds like its been wired in wrong TBH.
Which Greenstar? Exact model if possible.
When you say S-plan (two zones) do you mean one heating and one HW or two heating zones?
If you are OK at DIY you should be able to sort the wiring out - with some help.
When you say S-plan (two zones) do you mean one heating and one HW or two heating zones?
If you are OK at DIY you should be able to sort the wiring out - with some help.
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Which Greenstar? Exact model if possible.
When you say S-plan (two zones) do you mean one heating and one HW or two heating zones?
If you are OK at DIY you should be able to sort the wiring out - with some help.
40He
G.C. 41 311 61
One heating and one HW. Definetely sounds like a wiring problem, just asked my dad about it and he says its always been like that, ie pump overunning, and heating coming on when calling for HW only.
Link to Installation Manual
Just to confirm, you have two motorized valves - one in the CH circuit, the other in the HW circuit.You said:
The main power connection for the system should be to the boiler, which then provides power to the pump, motorized valve etc. It is important that the wiring is as shown in fig 30 of the manual.
The conventional wiring of an S-Plan is shown below. But the power to the junction box comes from the boiler. The wire marked DV (Demand or switched live) in the boiler manual and the pump all connect to the same terminal. This is equivalent to the wire from terminal 10 to boiler terminal L on this diagram.
Hope that's not too confusing
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