Evening all,
Hoping someone might have an idea. I have a WB1A (System boiler, 4 pipe, CH supply and return and HW tank supply and return) which recently developed an F2 fault. Boiler kicks in, heats up rapidly, then cuts out due to overtemp and F2 fault. Originally thought it was a pump fault, but changed that and no difference. Have refilled and vented he primary side several times (mainly due to having to drain to remove pump etc) and so don't think it is an air pocket.
Can anyone else think of somewhere in the boiler that could cause a blockage that could slow down the flow through the boiler. It isn't the system side as it is the same fault in HW and CH mode.
Any thoughts would be appreciated.
Thanks
Hoping someone might have an idea. I have a WB1A (System boiler, 4 pipe, CH supply and return and HW tank supply and return) which recently developed an F2 fault. Boiler kicks in, heats up rapidly, then cuts out due to overtemp and F2 fault. Originally thought it was a pump fault, but changed that and no difference. Have refilled and vented he primary side several times (mainly due to having to drain to remove pump etc) and so don't think it is an air pocket.
Can anyone else think of somewhere in the boiler that could cause a blockage that could slow down the flow through the boiler. It isn't the system side as it is the same fault in HW and CH mode.
Any thoughts would be appreciated.
Thanks