Airwell AWAU-YDD018-H11, Руководство по обслуживанию

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12-2
TROUBLESHOOTING
SM HDDHED 2-A.1 GB
Indoor indicators Outdoor indicators
Failure
Possible Reasons/Corrective
actions
2* 7
segments
LEDs
(RUN,COOL,HEAT)
D40 D41 D42 D43
E5
RUN OFF 3s and
blink 5 times
□ ■ □ AC over current protection
Supply voltage is unstable 1.
Supply voltage is too low and 2.
load is too high
E6
RUN OFF 3s and
blink 6 times
□ □ □ Communication malfunction
Wiring mistakes 1.
IDU or ODU PCB problem 2.
E8
RUN OFF 3S and
blink 8 times
■ □ ■ ■
Indoor coil/Outdoor coil over
heating protection
Too high ambient temperature 1.
Poor heat exchange 2.
(including blockage and bad
radiating environment )
U8
RUN OFF 3S and
blink 17 times Zero-crossing protection
(IDU)
IFAN motor damaged 1.
Zero-cossing cuitcuit 2.
damaged on IDU PCB
H6
RUN OFF 3S and
blink 11 times
No feedback of indoor motor
IFAN motor damaged 1.
IFAN motor blocked 2.
IDU PCB problem 3.
C5 RUN OFF 3S and
blink 15 times Malfunction protection of
jumper cap Poor connection of the jumper on
indoor PCB.
F1
COOL OFF 3S and
blink once
RAT failure
Senor was broken or 1.
damaged
PCB temperature detection
2.
cuircuit has problem
F2
COOL OFF 3S and
blink twice
ICT failure
F3
COOL OFF 3S and
blink 3 times
□ □ ■ OAT failure
F4
COOL OFF 3S and
blink 4 times
□ □ □ OCT failure
F5
COOL OFF 3S and
blink 5 times
□ □ CTT failure
F6
COOL OFF 3S and
blink for 6 times
■ □ HZ down due to overload
Too high ambient temperature 1.
Poor heat exchange 2.
(including blockage and bad
radiating environment )
F8
COOL OFF 3S and
blink 8 times
■ ■ □ ■ Hz down due to over current
Power supply voltage is too 1.
low
Higher system pressure and
2.
overload
F9
COOL OFF 3S and
blink 9 times
■ ■ □ □
Hz down due to CTT over
heating
Overload or temperature is 1.
too high
Insufficient refrigerant
2.
EEV Problem 3.
PH
COOL OFF 3S and
blink 11 times
□ ■ □ DC over voltage
AC power supply is higher 1.
than 265V
Outdoor PCB circuit
2.
malfunction
U5
COOL OFF 3S and
blink 13 times
□ ■ ■
AC Current detection
problem Outdoor PCB problem, replace the
outdoor controller.
P5
COOL OFF 3S and
blink 15 times
□ □ □
Compressor phase DC over
current protection
Abnormal power input 1.
voltage.
Compressor wiring mistake. 2.
Liquid and gas valve are not 3.
open.
EEV damaged or not proper 4.
working
Poor heat exchage. 5.
Over charged system. 6.
H1
HEAT OFF 3S and
blink once
Deicing Normal function during heating
H2
HEAT OFF 3S and
blink twice
ESF protection