Sharp AY-X36RU Service Manual page 13

Display Method of Indoor Unit
Indicator Display (during blink-
Malfunction
Dual 8
NO. ing, ON 0.5s and OFF 0.5s)
Name
Code
Operation
Display
Indicator
Failure start-
43 LC
up
Malfunction of
voltage drop-
45 U3
ping for DC
bus-bar
Malfunction of
complete units
46 U5
current detec-
tion
The four-way
47 valve is abnor- U7
mal
Zero- crossing OFF 3S
48 malfunction of U9 and blink
outdoor unit 18 times
Frequency lim-
49
iting (power)
Compressor
50
running
The tempera-
ture for turning
51
on the unit is
reached
Frequency lim-
52 iting (module
temperature)
Normal com-
53
munication
54 Defrosting
Display Method of Outdoor Unit
Indicator has 3 kinds of display
status and during blinking, ON
0.5s and OFF 0.5s
Cool Heating Yellow
Indicator Indicator Indicator Indicator
OFF 3S
and blink
11 times
OFF 3S
and blink
20 times
OFF 3S
and blink
13 times
OFF 3S
and blink
20 times
OFF 1S
and blink
13 times
OFF 1S
and blink
once
OFF 1S
and blink
8 times
OFF 1S
and blink
11 times
OFF 3S
and blink
once (dur- OFF 1S
ing blink- and blink
ing, ON twice
10s and
OFF 0.5s)
A/C status
Red Green
Indicator
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop operation.
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop
During cooling and drying opera-
tion, the compressor will stop while
indoor fan will operate;
During heating operating, the com-
plete unit will stop operation.
If this malfunction occurs during
heating operation, the complete
unit will stop operation.
During cooling operation, compres-
sor will stop while indoor fan will
operate; during heating,the com-
plete unit will stop operation.
OFF 0.5S
and blink
once
Defrosting will occur in heating
ode. Compressor will operate while
indoor fan will stop operation.
13
AY-X36RU
AE-X36RU
Possible Causes
Refer to the malfunction analysis
Supply voltage is unstable
There's circuit malfunction on out-
door units control panel AP1, please
replace the outdoor units control
panel AP1.
1. Supply voltage is lower than
AC175V;
2. Wiring terminal 4V is loosened or
broken; 3.4V is damaged, please
replace 4V.
Replace outdoor control panel AP1
Its the normal state