Overheat (NTC) error would normally throw up an E11 error. The NTC’s are embedded within the heat pump itself, terminals 5,6 & 7. Resistance readings at 20C should be (approx) as follows: –
Between terminals 5 & 6 = 10 K?
Between terminals 6 & 7 = 10 K?
Between terminals 5 & 7 = 20 K?
DDDave wrote:Is there any test sequence for these machines ?
Not to my knowledge unless you are employed by BSH and have one of their laptops you can plug in. Us on the other side of the fence have to make best the info that hangs on the grapevine. Sorry!