84[Heating] According to indoor pipe temperature, automatic heating fan speed is determined as follows.B. Feedback control Immediately after the fan motor started, feedback control is performed once every second. During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor errorcounter increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fanmotor error is detected. Operation stops and cannot on back.14.3 Outdoor Fan Motor OperationOutdoor fan motor is operated with one fan speed only. It starts when compressor starts operation and it stops 30seconds after compressor stops operation.14.4 Airflow Direction There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed byvertical vanes). Control of airflow direction can be automatic (angles of direction is determined by operation mode, heatexchanger temperature and intake air temperature) and manual (angles of direction can be adjusted usingremote control).14.4.1 Vertical AirflowOperation Mode Vane Angle (°)1 2 3 4 5CoolingAuto Usual (Ventilation) 10 ~ 40Control with dew 10 ~ 40Manual Usual (Ventilation) 10 17.5 25 32.5 40Control with dew 10 17.5 25 32.5 40DryAuto Usual 10 ~ 40Control with dew 10 ~ 40Manual Usual 10 17.5 25 32.5 40Control with dew 10 17.5 25 32.5 40HeatingManual Usual 10 21.2 32.5 43.8 55AutoA 10B 43.8C 21.2CS-DZ/PZ/UZ25/35VK