Error Codes - Fujitsu KHT Series Installation Manual

11. ERROR CODES

If you use a wired type remote controller, error codes will appear on the remote control-
ler display. If you use a wireless remote controller, the lamps on the IR receiver unit will
output error codes by way of blinking patterns. See the lamp blinking patterns and error
codes in the table below. An error display is displayed only during operation.
For more details, refer to the installation manual of the remote controller.
Error display
TIMER ECONOMY
OPERATION
lamp lamp
lamp (green)
(orange) (green)
 
(1) (1)
 
(1) (2)
 
(1) (5)
 
(1) (6)
 
(1) (8)
 
(2) (1)
 
(2) (2)
 
(2) (3)
 
(2) (4)
 
(2) (6)
 
(2) (7)
 
(2) (9)
 
(3) (1)
 
(3) (2)
 
(3) (3)
 
(3) (5)
 
(3) (9)
 
(3) (10)
 
(4) (1)
 
(4) (2)
 
(4) (4)
 
(5) (1)
 
(5) (3)
 
(5) (7)
 
(5) (15)
 
(6) (1)
En-16
Wired
remote
Description
controller
Error code
Serial communication error
Wired remote controller
communication error
Check run unfinished
Automatic airflow adjustment error
Peripheral unit transmission PCB
connection error
External communication error
Unit number or Refrigerant circuit
address setting error
[Simultaneous Multi]
Indoor unit capacity error
Combination error
• Connection unit number
error (indoor secondary unit)
[Simultaneous Multi]
• Connection unit number error
(indoor unit or branch unit)
[Flexible Multi]
Indoor unit address setting error
Primary unit, secondary unit setup
error [Simultaneous Multi]
Connection unit number error in
wired remote controller system
Power supply interruption error
Indoor unit PCB model
information error
Indoor unit motor electricity
consumption detection error
Manual auto switch error
Indoor unit power supply error for
fan motor
Indoor unit communication circuit
(wired remote controller) error
Room temp. sensor error
Indoor unit heat ex. middle temp.
sensor error
Human sensor error
Indoor unit fan motor error
Drain pump error
Damper error
Indoor unit error
Outdoor unit reverse/missing
phase and wiring error
Error display
TIMER ECONOMY
OPERATION
lamp lamp
lamp (green)
(orange) (green)
 
(6) (2)
 
(6) (3)
 
(6) (4)
 
(6) (5)
 
(6) (8)
 
(6) (10)
 
(7) (1)
 
(7) (2)
 
(7) (3)
 
(7) (4)
 
(7) (5)
 
(7) (6)
 
(7) (7)
 
(8) (2)
 
(8) (3)
 
(8) (4)
 
(8) (6)
 
(9) (4)
 
(9) (5)
 
(9) (7)
 
(9) (8)
 
(9) (9)
 
(9) (10)
 
(10) (1)
 
(10) (3)
 
(10) (4)
 
(10) (5)
 
(13) (2)

: 0.5s ON / 0.5s OFF
Display mode
: 0.1s ON / 0.1s OFF
( ) : Number of flashing
Wired
remote
Description
controller
Error code
Outdoor unit main PCB
model information error or
communication error
Inverter error
Active filter error, PFC circuit error
Trip terminal L error
Outdoor unit rush current limiting
resister temp. rise error
Display PCB microcomputers
communication error
Discharge temp. sensor error
Compressor temp. sensor error
Outdoor unit Heat Ex. liquid temp.
sensor error
Outdoor temp. sensor error
Suction Gas temp. sensor error
• 2-way valve temp. sensor error
• 3-way valve temp. sensor error
Heat sink temp. sensor error
• Sub-cool Heat Ex. gas inlet
temp. sensor error
• Sub-cool Heat Ex. gas outlet
temp. sensor error
Liquid pipe temp. sensor error
Current sensor error
• Discharge pressure sensor error
• Suction pressure sensor error
• High pressure switch error
Trip detection
Compressor rotor position
detection error (permanent stop)
Outdoor unit fan motor 1 error
Outdoor unit fan motor 2 error
4-way valve error
Coil (expansion valve) error
Discharge temp. error
Compressor temp. error
High pressure error
Low pressure error
Branch boxes error
[Flexible Multi]