Recently, my Dyson AM05 started displaying an "E8" error code on its screen after few minutes when heating mode is on. Cold mode is working normally without any issue. I’ve noticed there is only one side of heater is warming up and second one is always cold. Initially, I wasn't quite sure what this meant, and unfortunately, the user manual doesn't provide much information about specific error codes like E8. As a result, I'm a bit stuck as to what steps I should take to resolve this issue.