I have a LG model F1403RD washer dryer that has been working fine up to two days ago. Drain pump failed OE error. Fitted (eventually) today – machine now drains and OE error gone on spin cycle. However I’m now getting an IE error indicating a problem with the inlet pressure. Water supply has been turned back on local at the machine, filter checked and cleaned hose not trapped or kinked. Inlet valves actually opening and water entering the detergent drawer. However the drain pump is now running continuously preventing the machine from filling. I’m suspecting the pump fault has caused an error on the control board. Any thoughts and is it a complex task to replace?