thanks for the replies, I have turned off the power supply and switched it back on. As soon as the power is restored the solid red light appears and the pump starts running. I have tried the reset button but the light shows orange for only one second or so and then turns red. None of the wiring...
I have a Suprima 50 and 3 years ago I replaced the pcb with part no 5111603. Last night I noticed that the system pump was running however the programmed time was off. I checked the boiler and found a constant red light. According to the info that came with the replacement pcb this is a "system...