KeepRite DLFCHB - Page 40

40 328 080000 01
Specifications subject to change without notice.
TROUBLESHOOTING (CONT)
NO.
MALFUNCTION
NAME
Display Method of Indoor Unit
Display Method of
Outdoor Unit
AC STATUS POSSIBLE CAUSES
Dual-8
Code
Display
Indicator Display (during
blinking, ON 0.5s and OFF 0.5s)
Indicator has 3 kinds of display
status and during blinking, ON
0.5s and OFF 0.5s
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
44
Malfunction of
phase current
detection circuit for
compressor
U1
OFF 3S:
blinks
13 times
During the cooling and drying
operation, the compressor stops
while the indoor fan operates.
During the heating operation, the
unit stops
Replace outdoor control panel AP1
45
Malfunction of
voltage dropping
for DC bus-bar
U3
OFF 3S:
blinks
20 times
During the cooling and drying
operation, the compressor stops
while the indoor fan operates.
During the heating operation, the
unit stops
Supply voltage is unstable
46
Malfunction of
complete units
current detection
U5
OFF 3S
blinks
13 times
During the cooling and drying
operation, the compressor stops
while the indoor fan operates.
During the heating operation, the
unit stops.
There is circuit malfunction on the
outdoor unit's control panel AP1. Replace
the outdoor units control panel AP1.
47
The four-way
valve is abnormal
U7
OFF 3S:
blinks
20 times
If this malfunction occurs during the
heating operation, the unit stops
operating.
1.Supply voltage is lower than AC175V;
2.Wiring terminal 4V is loose or broken;
3.4V is damaged. Replace 4V.
48
Zero-
crossing
malfunction of
outdoor unit
U9
OFF 3S:
blinks
18 times
During the cooling operation, the
compressor stops while the indoor
fan operates. During heating,the unit
stops operating.
Replace outdoor control panel AP1
49
Frequency limiting
(power)
OFF 1S:
and blink
13 times
50
Compressor
running
OFF 1S:
blinks
once
51
The temperature
for turning on the
unit is reached
OFF 1S:
blinks
8 times
52
Frequency limiting
(module
temperature)
OFF 1S:
blinks
11 times
53
Normal
communication
OFF 0.5S
and blink
once
54 Defrosting
OFF 3S
and blink
once
(during
blinking,
ON 10s
and OFF
0.5s)
OFF 1S
and blink
twice
Defrosting occurs in the heating
mode. Compressor operates
while indoor fan stops operating.
Its the normal state