Self-Diagnosis Function; Chapter 3. Trouble Shooting Guide 1] Self-Diagnosis Function - Sharp AY-XP24PU Service Manual

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CHAPTER 3.
TROUBLESHOOTING GUIDE

[1] SELF-DIAGNOSIS FUNCTION

1.DESCREPTION OF SELF-DIAGNOSIS FUNCTION
‡ To display the self-diagnosis, hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.
‡ The operation lamp (green), timer lamp (orange) and Plasmacluster lamp (blue) flash to indicate the information of malfunction.
‡ If the power cord is unplugged or the circuit breaker is turned off, the self-diagnosis memory is lost.
<Display of self-diagnosis result>
The operation lamp (green) and the Plasmacluster lamp (blue) flash in synchronization with the timer lamp (orange).
Timer lamp (1 cycle)
1st
1-second
ON
ON
OFF
Remark
‡ When reading the result of self-diagnosis, you shall combine it with outdoor unit indication in order to get a correct conclusion.
2.CHART FOR READING SELF-DIAGNOSIS RESULT
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(LED1)
o
Normal Normal
O O O O O Timer (Orange)
condition blinking
Indoor and 1-time
O O O O O Timer (Orange)
outdoor units
do not oper-
ate.
O O O O O Timer (Orange)
O O O O O Timer (Orange)
O O O O O Timer (Orange)
2nd 3rd
1-second 1-second
ON ON
1-second 1-second 1-second
OFF OFF
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0
Operation (Green)
Plasmacluster (Blue)
1
O Operation (Green)
Plasmacluster (Blue)
O Operation (Green)
O Plasmacluster (Blue)
O Operation (Green)
O Plasmacluster (Blue)
O Operation (Green)
O O Plasmacluster (Blue)
AUX
4th 5th
1-second 1-second
ON ON
1-second
OFF OFF
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0 Normal
0 Outdoor unit Heat exchanger
thermistor thermistor short
short-circuit circuit error
1 Outdoor temperature
thermistor short
circuit error
2 Suction thermistor
short circuit error
3 Suction thermistor
(for unit A, B, C)
short circuit error
3 – 1
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Plasmacluster lamp(Blue)
Operation lamp(Green)
Timer lamp(orange)
5-second OFF
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1) Measure the resistance 1) Replace the outdoor
of the outdoor unit unit thermistor
thermistors. assembly.
2) Check the lead wire
2) Replace the outdoor
of the outdoor unit
unit thermistor
thermistor for torn
assembly.
sheath and shortcircuit.
3) 1) 2):Normal 3) Replace the outdoor
unit control PCB
assembly.