Because he provided no guarantee that it would work. He told me that in many cases the old boilers don't work when they are moved.
He wanted to do only the pipework if I did not want to install a new boiler. To be fair, he has charged me for for that only and the pipework is neat and immaculate with denso tape for ground runs and clamps on all vertical legs. He could only check for leaks before he left as it was quite late.
Now the original 5 core cable from the boiler has not been touched. It has only been extended with a new 5 core cable (new colour codes) to the control box (plastic junction box on the wall), which is still at the old location near the pump and the fused switch.
I now suspect that the live cable from boiler has been wrongly connected.
He wanted to do only the pipework if I did not want to install a new boiler. To be fair, he has charged me for for that only and the pipework is neat and immaculate with denso tape for ground runs and clamps on all vertical legs. He could only check for leaks before he left as it was quite late.
Now the original 5 core cable from the boiler has not been touched. It has only been extended with a new 5 core cable (new colour codes) to the control box (plastic junction box on the wall), which is still at the old location near the pump and the fused switch.
I now suspect that the live cable from boiler has been wrongly connected.