Indoor Fan Motor Operation; Outdoor Fan Motor Operation; Airflow Direction - Panasonic CS-S18NKUA Service Manual

11.2 Indoor Fan Motor Operation

11.2.1 Basic Rotation Speed
•
Manual Fan Speed
Fan motor's number of rotation is determined according to remote control setting.
o
•
Auto Fan Speed
According to room temperature and setting temperature, indoor fan speed is determined automatically.
o
The indoor fan will operate according to pattern below.
o
Fan Speed a
Higher
Medium
Lower
•
Feedback control
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
o
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 one fan speed only. Outdoor fan turns on when compressor starts to operate. But
outdoor fan will turns off 30 seconds after compressor stops to operate.
Compressor
Outdoor Fan

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).
Remote control ○
Tab Hi
b c d e
ON
ON Fan Speed
30 sec
○ ○ ○
Me+ Me Me-
f g h
[1 pattern : 10s]
OFF
OFF
28
○
Lo
a b
ON
ON