Panasonic S12NKUA Service Manual download pdf (Page 28)

11.2 Indoor Fan Motor Operation

11.2.1 Basic Rotation Speed

• Manual Fan Speed

o Fan motor’s number of rotation is determined according to remote control setting.

Remote control ○ ○ ○ ○ ○

Tab Hi Me+ Me Me- Lo

• Auto Fan Speed

o According to room temperature and setting temperature, indoor fan speed is determined automatically.

o The indoor fan will operate according to pattern below.

Fan Speed a b c d e f g h a b

Higher

Medium

Lower

[1 pattern : 10s]

• Feedback control

o Immediately after the fan motor is started, feedback control is performed once every second.

o During fan motor on, if fan motor feedback ≥ 2550 rpm or <50 rpm continuously for 10 seconds, the fan

motor error counter increased; fan motor is then stopped and restarted. If the fan motor error counter

increased to 7, then H19 – fan motor error is detected. Operation stopped and could not be restarted.

11.3 Outdoor Fan Motor Operation

Outdoor fan motor is operated with fan speed number of rotations. Outdoor fan turns on when compressor starts to

operate. But outdoor fan will turns off 30 seconds after compressor stops to operate.

ON ON

Compressor OFF

ON Fan Speed ON

Outdoor Fan 30 sec OFF

11.4 Airflow Direction

• There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by

vertical vanes).

• Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat

exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using

remote control).

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Panasonic S12NKUA Service Manual Page 28