62
Installation and Maintenance
Service Manual
7
Indoor ambient
temperature
sensor is open/
short- circuited
F1
The unit will stop operation
as it reaches the temperature
point. During cooling and drying
operation, compressor and
outdoor unit stop, while indoor
fan operates; During heating
operation, the complete unit
stops operation.
Connection terminal
between indoor ambient
temperature sensor and
main board is loose or
poor connection.
Refer to maintenance
flowchart
Theres short circuit due
to trip-over of the parts
on main board;
Indoor ambient
temperature sensor
is damaged (Please
check it by referring to
the resistance table for
temperature sensor)
Main board is
damaged.
8
Indoor
evaporator
temperature
sensor is open/
short-circuited
F2
The unit will stop operation
as it reaches the temperature
point. During cooling and drying
operation, compressor and
outdoor unit stop, while indoor
fan operates; During heating
operation, the complete unit
stops operation.
Connection terminal
between indoor
evaporator temperature
sensor and main
board is loose or poor
connection.
Refer to maintenance
flowchart
Theres short circuit due
to trip-over of the parts
on main board;
Indoor evaporator
temperature sensor
is damaged (Please
check it by referring to
the resistance table for
temperature sensor)
Main board is
damaged.