I have had a Baxi PFL 60 boiler fitted for the past year (controlled off the original Potterton EP2001 programmer) and have had no end of problems with the boiler going into overheat mode. This new boiler (in the kitchen) replaced an Ideal boiler that never overheated. Various heating engineers (including installer) have been out and changed various components around the heating system as they could not find a fault on the boiler, but to no avail and much cost.
Last two visits were from Baxi (Heateam) and the last engineer stated the pump should be connected directly to the boiler and not run from the programmer, and that that was the fault. So I checked the installation book and found the following (please bear with me):-
1. Boiler should have a permanent live power supply
2. Boiler should have a switched live
3. Pump should be connected to the boiler
After checking the wiring I have found:-
1. The pump is connected to the Honeywell control box in the airing cupboard that also serves the Potterton EP2001 programmer
2. The switched live supply terminal on the boiler is linked from the permanent live supply
3. The 'permanent' live supply is only live when the programmer is live (i.e. within programmed times) so when the programmer timer expires power is lost to the boiler (and the pump stops as this runs via the programmer/Honeywell panel).
Thanks for sticking with me so far. What I am really after is:-
* Confirmation from the above that my boiler has been electrically installed incorrectly, or if the above is a legitimate method of connection (?)
* Can anyone explain what should be connected to which terminal and from where in the programmer/Honeywell box and how this should correlate to the programmer wiring in general (e.g. if the permanent live is just that, where does the single switched live terminal receive its supply from).
Although electrically competent I do not wish to rewire my boiler electrics myself, but would like to know how it should look so I can check the engineer's work after previous visits have proved a waste of time, money and effort.
Can anyone help? Is more information needed?
Many thanks in advance
Mark
Last two visits were from Baxi (Heateam) and the last engineer stated the pump should be connected directly to the boiler and not run from the programmer, and that that was the fault. So I checked the installation book and found the following (please bear with me):-
1. Boiler should have a permanent live power supply
2. Boiler should have a switched live
3. Pump should be connected to the boiler
After checking the wiring I have found:-
1. The pump is connected to the Honeywell control box in the airing cupboard that also serves the Potterton EP2001 programmer
2. The switched live supply terminal on the boiler is linked from the permanent live supply
3. The 'permanent' live supply is only live when the programmer is live (i.e. within programmed times) so when the programmer timer expires power is lost to the boiler (and the pump stops as this runs via the programmer/Honeywell panel).
Thanks for sticking with me so far. What I am really after is:-
* Confirmation from the above that my boiler has been electrically installed incorrectly, or if the above is a legitimate method of connection (?)
* Can anyone explain what should be connected to which terminal and from where in the programmer/Honeywell box and how this should correlate to the programmer wiring in general (e.g. if the permanent live is just that, where does the single switched live terminal receive its supply from).
Although electrically competent I do not wish to rewire my boiler electrics myself, but would like to know how it should look so I can check the engineer's work after previous visits have proved a waste of time, money and effort.
Can anyone help? Is more information needed?
Many thanks in advance
Mark