"this inverter has no internal link between neutral and earth. You will need to bond these together (and to a reliable earth) for most boiler ignition circuits to work, or they will fail to detect when the flame lights, and continue trying to ignite it."
A useful thing to know. I have just heard of a new CH installation that had troubles working and it turn out to be a bad (main) earth.
Just wondered why this is a problem (afa the igniter circuit is concerned)? I thought it may be similar to an igniter circuit on a gas cooker - which will fire without any earth - as the circuit is "with respect to itself " - just a simple loop and battery. Obviously a combi boiler is more complex and has safety aspect to it etc - but anyone know in detail why this is a problem?