Hope your able to help.
Woke yesterday to no heating or water. Checked timer, thermostat etc - all ok.
We had previously had an issue with the pcb which needed some joints re-soldered a couple years ago. The pcb was now quite black in one area and with the valve and pump ok, the boiler lights coming on when being asked to by the thermo and timer I bought a new pcb today.
Changed it - no heating or water. The pipes at the top are both cold.
The valve moves if I switch on/off heating/water and the pump is on, and the boiler reacts to the timer.
Any thoughts as its blinkin freezing in here ?