56
USER'S MANUAL
Fault code
When the air conditioner fails, the LED light or digital tube on indoor display board will
show the corresponding fault code according to different fault.
Note :
For the unit with digital tube, it will show the corresponding fault codes; for the unit
no digital tube only LED light, it will only show the corresponding fault codes with timer
light.
Specific correspondis as follows:
Wall Mounted
Fault description
Fault
Code
E1
Causes of possible failure
Fault with the room
temperature sensor on
the N # indoor unit
•
Damaae of the room temoerature sen sor on the indoor unit
•
Poor contact of the room temperature sensor on the indoor unit
•
Damage of wiring of the room temperature sensor on the indoor unit
•
Damage of the main PCB on the indoor unit
E2
Fault with the Defrosting/
Condenser Temperature
Sensor in Outdoor
•
Damage of the temperature sensor on the outdoor unit
•
Poor contact of the temperature sensor on the outdoor unit
•
Damage of wiring of the temperature sensor on the outdoor unit
•
Damage of the main PCB on the outdoor unit
E3
Fault with the temperature
Sensor in the Middle of N #
•
Damage of the temperature sen sor on the indoor unit
•
Poor contact of the temperature sensor on the indoor unit
•
Damage of wiring of the temperature sensor on the indoor unit
•
Damage of the main PCB on the indoor unit
E4
Fault with the Fan motor of
N # indoor unit
•
Low voltage
•
Poor wiring
•
Damage of the main PCB on the indoor unit
•
Damage of the motor
E5
Communication error
E5 between the outdoor unit
and the N # indoor unit
•
Damage of the main PCB on the indoor unit Damage of the main
•
•
PCB on the outdoor unit
•
Poor wiring
E8
Communication error
between the display board and
main PCB of the indoor unit
•
Damage of the main PCB on the indoor unit
•
Damage of the display board on the indoor unit
•
Poor wiring
F1
F0
Module protection failure
Fault with the Fan motor of
outdoor unit
•
Compressor damage
•
Compressor 1PM Module damage
•
System blockage
•
Damage of motor
F2
Compressor drive PFC
protection
•
Damage of the PFC circuit components
•
Reactor damage
F3
Compressor protection failure
•
Compressor power line not connected
•
Compressor sequence connection error
•
Damage of compressor
•
System blockage
F4
Fault with the discharge
temperature sensor
•
Damage of the discharge temperature sen sor on the outdoor unit
•
Poor contact of the discharge temperature sensor on the outdoor unit
•
Damage of wiring of the discharge temperature sensor on the outdoor unit
•
Damage of the main PCB on the outdoor unit
Summary of Contents for Multi Naya 12
Page 64: ...62 USER S MANUAL Selection Of the installing position Indoor Unit Outdoor Unit 2 3 2 6 ...
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