Hi All,
I have potterton kingfisher MF RSL 50 freestanding boiler. The boiler operates normally for about 20 minutes and then the lockout (RED neon) comes on. The pump is still running when the lockout happens. You have to wait for about 10-12 minutes before pressing the reset button, then the green light comes on; flame is re-ignited and the boiler works fine for the next 15-20 minutes. I have gas engineer change both the thermistor (located on heat exchange) and thermostat (on the flue pipe). The problem still persists. Is it due to faulty PCB? or some other problem. As mentioned I have called the gas engineer twice. One advised me to change the central heating pump. The other told me that the heater fan inside the boiler might be faulty: fan seems to be working fine until the lock out happens.
I have potterton kingfisher MF RSL 50 freestanding boiler. The boiler operates normally for about 20 minutes and then the lockout (RED neon) comes on. The pump is still running when the lockout happens. You have to wait for about 10-12 minutes before pressing the reset button, then the green light comes on; flame is re-ignited and the boiler works fine for the next 15-20 minutes. I have gas engineer change both the thermistor (located on heat exchange) and thermostat (on the flue pipe). The problem still persists. Is it due to faulty PCB? or some other problem. As mentioned I have called the gas engineer twice. One advised me to change the central heating pump. The other told me that the heater fan inside the boiler might be faulty: fan seems to be working fine until the lock out happens.