80e works 90 per cent well. But when running shower, intermittently stops heating and restarts.
It's not the DHW temp sensor.
I don't think the flow switch is tripping when demand is low (i.e as the water gets hotter)
I don't think the dhw O/H thermostat is tripping.
Other observations - CH temp control leads to gas valve modulation, changing the DHW temp control makes no difference.
Anyone any ideas please? Would seen a shame to scrap it despite age as all other functions are fine.
Tx
P
It's not the DHW temp sensor.
I don't think the flow switch is tripping when demand is low (i.e as the water gets hotter)
I don't think the dhw O/H thermostat is tripping.
Other observations - CH temp control leads to gas valve modulation, changing the DHW temp control makes no difference.
Anyone any ideas please? Would seen a shame to scrap it despite age as all other functions are fine.
Tx
P