Service diagnosis
Domestic air conditioner
27
10.3 Error Codes and Description indoor display
498A display
(Red/Green Time
Run □On★Flash■
Indoor and
Outdoor
■ ■ ★ 15
between indoor and outdoor
Page.42
★
■
■
Indoor temperature sensor
failure
★
□
□
/ Indoor coil sensor failure Page.32
★
□
★
/ Indoor eeprom failure Page.33
■
□
★
/ Indoor fan failure Page.34
□ ■ ★ 22
Internal unit antifreeze
protection
/
□
■
★
21 Internal unit overload Page.45
■
★
■
□
★
★
★ ★ ■ 3
AC current overcurrent
protection
Page.38
■ ★ ■ 4
between module board and
Page.39
■
★
□
5 High pressure protection Page.45
■ ★ □ 6
Power over/under voltage
protection
Page.40
■ ★ ■ 7
Compressor stall / press
instantaneous stop
Page.40
■ ★ ■ 8
Compressor discarging
temperature protection
Page.41
■
★
□
9 Abnormal of DC motor Page.36
□
□
★
10 Abnormal of piping sensor Page.32
■ ★ ■ 11
Suction temperature sensor
failure
Page.32
□ ★ ■ 12
Abnormal of outdoor
ambient sensor
Page.32
★ □ ■ 13
Abnormal of compressor
discharge sensor
Page.32
■
★
□
■
★
□
17 4-way valve reverse failure Page.
■ ★ ■ 18
Compressor jam (only for
spdu)
Page.44
■ ★ ■ 19
Module PWM select circuit
error
Page.44
■ ★ □ 20
Outdoor terminal block
temperature protection
Page.
■ ★ □ 24
Instantaneous over-current
protection of the
Page.38
■ ★ □ 25
overcurrent
Compressor V-phase
overcurrent
Compressor W-phase
Page.38
F9 Trouble record
/ 26 Module reset Page.46
★
■
★
F34 Trouble record
/ 37 Outdoor coil protection /
■ ★ □ 38
Compressor driver board
failure
/
/ ■ ★ ■ 46
Model matching
abnormality
/
Indoor
Malfunction
Outdoor
Malfunction
fault description Reference Page
Other display
Indoor displaying panel code indication
Outdoor
(LED1 flash
times)
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