Not sure which Manrose you have fitted - is it the CF100? If so this extracts about 62cu m per hour which is not enough for a steamy shower room.
I had the same problem and eventually fitted an in line duct fan which gives far more extraction using the same size ducting. Also try using...
Thanks for the reply. I agree the manual is real pain - too many alnguage versions and not enough clarity.
Are you saying that all I need to do is connect a wire between the L2 terminal and terminal 4 (not Heathrow) :D
I am in the process of replacing a S&P 250T in line fan with a similar Vortice model which has been in place of about 2 years. The reason for the replacement is that timer on the circuit board has blown.
I thought this would be a simple process - the S&P model has a 3 core and earth cable...