Trianco 15/19 + Honeywell Y system
Not normally used hot water only setting.
But today selected this today and after one hour (boiler thermostat had been cutting in) the Amber /excess temp light came on, with sounds of kettling/ boiling water,
we now have tank of hot water there is a stat on cylinder.so pump working !
checking loft tank and it had been discharging hot water to this via vent pipe from boiler.
As there are no D phile available for this model I do have a new spare Teddington Type TBB BD/3/600
Didn't have problem in winter running C.H only.
Any help appreciated before going any further
Not normally used hot water only setting.
But today selected this today and after one hour (boiler thermostat had been cutting in) the Amber /excess temp light came on, with sounds of kettling/ boiling water,
we now have tank of hot water there is a stat on cylinder.so pump working !
checking loft tank and it had been discharging hot water to this via vent pipe from boiler.
As there are no D phile available for this model I do have a new spare Teddington Type TBB BD/3/600
Didn't have problem in winter running C.H only.
Any help appreciated before going any further