Troubleshooting
SiUS091601E
97
Service Diagnosis
4.20 Electrical Box Temperature Rise
Error Code
L3
Method of Error
Detection
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
compressor off.
Error Decision
Conditions
With the compressor off, the radiation fin temperature is above
A
.
The error is cleared when the radiation fin temperature drops below
B
.
To cool the electrical components, the outdoor fan starts when the radiation fin temperature
rises above
C
and stops when the radiation fin temperature drops below
B
.
: The same value continues.
Supposed
Causes
Defective outdoor fan motor
Short circuit
Defective radiation fin thermistor
Disconnection of connector
Defective outdoor unit PCB
Troubleshooting
Check No.17
Refer to P.108
Check No.19
Refer to P.109
A
B
C
°C
°F
°C
°F
°C
°F
09 class
82
179.6
65
149
70
158
12 class
90
194
75
167
81
177.8
15 class
90
194
64
147.2
81
177.8
Caution
WARNING
To cool the electrical components,
the outdoor fan starts when the
radiation fin temperature rises
above
C
and stops when the radiation
fin temperature drops below
B
.
(R22998)
YES
NO
YES
NG
NO
OK
NO
YES
Turn off the power. Then, turn on
the power to restart the system.
Check the radiation fin
temperature.
Radiation fin dirty?
Check No. 19
Check the outdoor fan.
Error again or outdoor
fan activated?
Replace the outdoor unit
PCB (main PCB).
Clean up the radiation fin.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the outdoor fan
motor.
Correct the connectors
and fan motor lead wire.
Replace the outdoor unit
PCB (main PCB).
Above
A
?
Check the installation
condition.
Go to
Check No. 17
.
Summary of Contents for FVXS09NVJU
Page 12: ...SiUS091601E 1 List of Functions Part 1 List of Functions 1 Functions 2 ...
Page 15: ...SiUS091601E Specifications 4 Part 2 Specifications 1 Specifications 5 ...
Page 65: ...SiUS091601E Remote Controller 54 Part 5 Remote Controller 1 FTX Series 55 2 FVXS Series 57 ...
Page 144: ...Revision History Month Year Version Revised contents 02 2016 SiUS091601E First edition ...