Sharp AY-X36RU Service Manual page 11

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
Outdoor ambi-
ent tempera-
14 ture sensor F3
is open/short
circuited
Outdoor
condenser
15 temperature F4
sensor is open/
short circuited
Outdoor
discharge
16 temperature F5
sensor is open/
short circuited
Limit/ decrease
17 frequency due F6
to overload
Decrease fre-
F8
18 quency due to
overcurrent
Decrease
frequency due
19 F9
to high air dis-
charge
Limit/ decrease
20 frequency due FH
to antifreezing
Voltage for DC
21 bus-bar is too PH
high
Voltage of DC
22 bus-bar is too PL
low
Compressor
23 Min frequence P0
in test state
Compressor
rated fre-
24 P1
quence in test
state
Compressor
maximum fre-
25 P2
quence in test
state
Compressor
intermediate
26 P3
frequence in
test state
Overcurrent
protection of
27 P5
phase current
for compressor
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 OFF 1S
and blink and blink
3 times 6 times
OFF 3S OFF 1S
and blink and blink
4 times 5 times
OFF 3S
OFF 1S
and blink
and blink
7 times
5 times
OFF 3S
OFF 1S
and blink
and blink
for 6
3 times
times
OFF 3S
OFF 1S
and blink and blink
once
8 times
OFF 3S OFF 1S
and blink and blink
9 times twice
OFF 3S OFF 3S OFF 1S
and blink and blink and blink
2 times 2 times 4 times
OFF 3S OFF 1S
and blink and blink
11 times 13 times
OFF 3S
OFF 1S
and blink
and blink
12 times
21 times
(during (during
blinking, blinking,
ON 0.25s ON 0.25s
and OFF and OFF
0.25s) 0.25s)
(during (during
blinking, blinking,
ON 0.25s ON 0.25s
and OFF and OFF
0.25s) 0.25s)
(during (during
blinking, blinking,
ON 0.25s ON 0.25s
and OFF and OFF
0.25s) 0.25s)
(during (during
blinking, blinking,
ON 0.25s ON 0.25s
and OFF and OFF
0.25s) 0.25s)
OFF 3S
and blink
15 times
A/C status
Red Green
Indicator
During cooling and drying operat-
ing, compressor stops while indoor
fan operates; During heating oper-
ation, the complete unit will stop
operation
During cooling and drying opera-
tion, compressor stops while indoor
fan will operate; During heating
operation, the complete unit will
stop operation.
During cooling and drying opera-
tion, compressor will sop after
operating for about 3 mins, while
indoor fan will operate; During
heating operation, the complete
unit will stop after operating for
about 3 mins.
All loads operate normally, while
operation frequency for compres-
sor is decreased
All loads operate normally, while
operation frequency for compres-
sor is decreased
All loads operate normally, while
operation frequency for compres-
sor is decreased
All loads operate normally, while
operation frequency for compres-
sor is decreased
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, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop operation.
11
AY-X36RU
AE-X36RU
Possible Causes
Outdoor temperature sensor hasn't
been connected well or is damaged.
Please check it by referring to the
resistance table for temperature
sensor)
Outdoor temperature sensor has
not been connected well or is dam-
aged. Please check it by referring to
the resistance table for temperature
sensor)
1. Outdoor temperature sensor
has not been connected well or
is damaged. Please check it by
referring to the resistance table
for temperature sensor)
2. The head of temperature sensor
has not been inserted into the
copper tube
Refer to the malfunction analysis
(overload, high temperature resis-
tant)
The input supply voltage is too low;
System pressure is too high and
overload
Overload or temperature is too high;
Malfunction of electric expansion
valve (EKV)
Poor air-return in indoor unit or fan
speed is too low
1. Measure the voltage of position L
and N on wiring board (XT), if the
voltage is higher than 265VAC,
turn on the unit after the supply
voltage is increased to the nor-
mal range.
2. If the AC input is normal, mea-
sure the voltage of electrolytic
capacitor C on control panel
(AP1), if its normal, there is mal-
function for the circuit, please
replace the control panel (AP1)
1. Measure the voltage of position L
and N on wiring board (XT), if the
voltage is higher than 150VAC,
turn on the unit after the supply
voltage is increased to the nor-
mal range.
2. If the AC input is normal, mea-
sure the voltage of electrolytic
capacitor C on control panel
(AP1), if its normal, there's mal-
function for the circuit, please
replace the control panel (AP1)
Showing during min. cooling or min.
heating test
Showing during nominal cooling or
nominal heating test
Showing during max. cooling or
max. heating test
Showing during middle cooling or
middle heating test
Refer to the malfunction analysis
(IPM protection, loss of synchronism
protection and over current protec-
tion of phase current for compres-
sor.