Hello everyone

Our reception area has high ceilings of 5/6m we need to turn on the high ceiling mode as high fan speed alone is not enough to get warm air down to floor level.

The controller suggests that high ceiling mode is Mode number 13 (23) followed by first code 0 then we have second code numbers of 01 (normal <2.7m), 02 (high >2.7m) or 03 (extra high >3.0).

On our other floors setting option 03 actually reduces the fan output and you can hear the fan and airflow is less, setting it to 01 where you would expect it to be the least actually makes the fan speed up the fastest. Also on this controller there is an option for static pressure which is not available on the ducted units on the other floors so our reception ducted unit is clearly a diff unit.

The issue is on the reception unit we cannot hear the fan anyway due to the height of the ceiling and the noise level from the busy street so we need to know the correct settings as they do not seem to correspond to what its saying in the field settings. Even the engineers when they come out are confused by this and say that code 03 is high ceiling mode even though this slows the fan down even slower. As the FM for this site I am having to resolve this myself now due to the call out costs.

Anyone any idea on what is the correct settings? The system is about 6 years old now and is a big VRV system with some areas having localised controllers - the reception area included. The rest are controlled from itouch controllers in the riser cupboards.