Sharp AY-XP24PU, Service Manual

Page: 16 / 35

3-2
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Indoor and
outdoor units
do not
operate. 2-time
O O O O O Timer (Orange)
2 0 Cycle
temperature Compressor high
temperature error 1) Check the outdoor unit
air outlet for blockage.
2) Check if the power
supply voltage is AC
230V at full power.
3) Check the pipe
connections for
refrigerant leaks.
4) Measure resistance
of the outdoor unit
compressor thermistor.
5) Check the expansion
valve for proper
operation.
1) Ensure unobstructed
outdoor unit air
outlet.
2) Connect power
supply of proper
voltage.
amount of refriger-
ant.
4) Replace the outdoor
unit compressor
thermistor assem-
bly.
5) Replace the expan-
sion valve coil,
expansion valve or
outdoor unit control
PCB assembly.
O Operation (Green)
Plasmacluster (Blue)
Indoor unit
operates.
Outdoor
unit does
not operate
temporarily O O O O O Timer (Orange) 1 Compressor
discharge overheat. (Temporary stop for cycle
protection) -
O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 2 Outdoor unit heat
exchanger overheat. (Temporary stop for cycle
protection) -
O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 3 Indoor unit heat
exchanger overheat. (Temporary stop for cycle
protection) -
O Operation (Green)
O O Plasmacluster (Blue)
O O O O O Timer (Orange) 4 IPM high
temperature error Measure resistance of the
heat-sink thermistor. -
O Operation (Green)
O Plasmacluster (Blue)
Indoor and
outdoor
units do not
operate. O O O O O
O O O O O
O O
Timer (Orange) 5 IPM high
temperature error Replace the outdoor unit
control PCB assembly. -
O Operation (Green)
O O Plasmacluster (Blue)
Plasmacluster (Blue)
AY-XPC15PU
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Indoor unit
operates.
Outdoor
unit does
not operate
temporarily.
3-time Timer (Orange)
tion
Temporary stop
due to dehumidi-
fying operation
(Temporary stop for
cycle protection)
-
Operation (Green)
3 0 Dry opera-
Indoor and
outdoor
units do not
operate. 5-time O O O O O Timer (Orange) 5 0 Outdoor unit
thermistor
open-circuit Heat exchanger
thermistor open
circuit error 1) Check connector of
outdoor unit thermistor
for secure installation.
2) Measure resistance of
outdoor thermistors
3) Check the lead wires
of thermistors on the
outdoor unit control
PCB for open-circuit.
4) 1) 2) 3):Normal
1) Correct the installa-
tion
2) Replace the outdoor
unit thermistor
assembly.
3) Replace the outdoor
unit thermistor
assembly.
4) Replace the outdoor
unit control PWB
assembly.
O O Operation (Green)
Plasmacluster (Blue)
O O O O O Timer (Orange) 1 Outdoor temperature
thermistor open
circuit error
O O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 2 Suction thermistor
open circuit error
O O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 3 Suction thermistor
open circuit error
O O Operation (Green)
O O Plasmacluster (Blue)
O O O O O Timer (Orange) 4 Discharge thermistor
open circuit error
O O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 5 Heat sink thermistor
open circuit error
O O Operation (Green)
O O Plasmacluster (Blue)