Airwell HDD 009, Manual

Page: 52 / 54

AN COMPANY
‹ # ›
Error Failure Code list and Probable Cause
Indoor indicators Outdoor indicators Failure Possible Reasons/Corrective actions
2* 7
segment
s
LEDs
(RUN,COOL,HEAT)
D40 D41 D42 D43
HC
HEAT OFF 3S and blink 6 times
□ ■ ☆ ☆
PFC protection
1.PFC module assembly problem.
2.Poor heat exchange of Heatsink
3.PFC reactor problem.
4.Abnormal power voltage
5.PFC circuit problem on PCB
H7
HEAT OFF 3S and blink 7 times
□ ☆ ■ ☆
Desynchronizing of compressor
•Abnormal power input voltage.
•Compressor wiring mistake.
•Liquid and gas valve are not open.
•EEV damaged or not proper working
•Poor heat exchange.
•Over charged system.
。
H0
HEAT OFF 3S and blink 10 times
■ □ ☆ ☆
HZ down due to IDU over
heating protection
1.Too high ambient temperature
2.Poor heat exchange (including blockage and bad
radiating environment )
Lc
HEAT OFF 3s and blink 11 times
□ ☆ □ ☆
Start-up failure
•Compressor wiring mistake
•Over charged system
•System not balanced before compressor starting
•Compressor problem
U1
HEAT OFF 3s and blink 13 times
□ ☆ ■ □
Malfunction of phase current
detection circuit for compressor Phase current detection circuit for compressor has
problem.
EE
HEAT OFF 3s and blink 15 times
□ □ □ ■
EEPROM failure Replace indoor controller
PU
HEAT OFF 3S and blink 17 times
□ ■ □ ■
Charging malfunction of
capacitor
•Reactor open
•Charging relay or other components damaged on
PCB.
□ - LED OFF / ■ - LED ON / ☆ - LED BLINK