Lennox LNINVC063 User Manual

53
Installation and Maintenance
Service Manual
7
Indoor
ambient
temperature
sensor is
open/short-
circuited
F1
Flash
once
every 3s
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
owchart
There’s 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
Flash
twice
every 3s
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
owchart
There’s 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.

Lennox LNINVC063 Specifications

General

Brand	Lennox
Model	LNINVC063
Category	Air Handlers
Language	English