Outdoor Unit Display - Fujitsu ASU18RMLQ Service Instruction

2-1-2 OUTDOOR UNIT DISPLAY

1. ERROR DISPLAY
Error Contents
Outdoor communication signal error
(Forward transfer signal error)
Outdoor discharge pipe temperature
thermistor error
Outdoor heat exchanger temperature
thermistor error
Outdoor temperature thermistor error
2-way valve temperature
2-way valve temperature
2-way valve temperature
2-way valve temperature
3-way valve temperature
3-way valve temperature
3-way valve temperature
3-way valve temperature
Compressor temperature
Heat sink temperature
Pressure switch 1 error
Pressure switch 2 error
Connected indoor unit error
IPM error
Compressor rotor location cannot detect
(permanent stop)
Compressor Start-up error
(permanent stop)
Outdoor unit fan motor error
Main CPU - sub CPU communication error
2. ERROR DISPLAY METHOD
Outdoor LED Blink (1 to 18 times) 0.5sec ON / 0.5sec OFF blinking
0.5sec
ON
OFF
3. NORMAL OPERATION DISPLAY
Operation
Normal operation
A
1 times blink
OFF
OFF
OFF
2 times blink
3 times blink
4 times blink
5 times blink
thermistor A error
thermistor B error
OFF
thermistor C error OFF
OFF
thermistor D error
thermistor A error 6 times blink
thermistor B error OFF
OFF
thermistor C error
thermistor D error
OFF
thermistor error
7 times blink
thermistor error
8 times blink
9 times blink
10 times blink
11 times blink
12 times blink
13 times blink
14 times blink
15 times blink
17 times blink
0.5sec 2sec
Continuously lighting
02-03
LED
B C
OFF OFF
1 times blink
OFF
1 times blink
OFF
1 times blink
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
5 times blink
OFF
OFF 5 times blink
OFF OFF
5 times blink
OFF
OFF
6 times blink OFF
6 times blink
OFF
6 times blink
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
Trouble
shooting
D
OFF
OFF
11
OFF
8
OFF
5
OFF
7
OFF
OFF
OFF
21
OFF
OFF
OFF
22
OFF
OFF 12
OFF 19
OFF
13
OFF
23
OFF
14
OFF
17
OFF
20
OFF
18
OFF
OFF 24