It's been a few months since I posted on the subject of running a combi boiler off-grid & although the advice gratefully received didn't solve the problem I thought I would re-visit the situation with an update.
To refresh memories ... just connecting the inverter to the boiler resulting in the pump running, but no real attempt to ignite & a 'flame failure' code.
Grounding the earth connection on the inverter's casing to an adjacent earth on a 13A socket produced a couple of attempts to ignite, followed by the same fault code. On both occasions I needed to use the reset facility to restore normal boiler operation after switching back to the mains.
Yesterday I made the same connection on the inverter to the earth in the boiler's terminal box & ignition actually took place (!) only briefly though, followed by the error code of E168 which is not even listed in the boiler manual. Interestingly in this latest of experiments it was not necessary to reset the boiler as it fired up immediately when switched back to the mains ... so near & yet so far
Thanks for reading folks, any thoughts would be greatly appreciated. Winter is approaching & I want to be independent should the worst happen to the grid.
Baxi Duo-tec combi
Mercury IPS600-12 pure sine wave inverter
110 AH leisure battery
To refresh memories ... just connecting the inverter to the boiler resulting in the pump running, but no real attempt to ignite & a 'flame failure' code.
Grounding the earth connection on the inverter's casing to an adjacent earth on a 13A socket produced a couple of attempts to ignite, followed by the same fault code. On both occasions I needed to use the reset facility to restore normal boiler operation after switching back to the mains.
Yesterday I made the same connection on the inverter to the earth in the boiler's terminal box & ignition actually took place (!) only briefly though, followed by the error code of E168 which is not even listed in the boiler manual. Interestingly in this latest of experiments it was not necessary to reset the boiler as it fired up immediately when switched back to the mains ... so near & yet so far
Thanks for reading folks, any thoughts would be greatly appreciated. Winter is approaching & I want to be independent should the worst happen to the grid.
Baxi Duo-tec combi
Mercury IPS600-12 pure sine wave inverter
110 AH leisure battery