Troubleshooting Guide - Sharp AE-X2M14LR Service Manual

NO. Function
Power factor mod-
14 ule (Active Filter)
clock error
Outdoor unit DC fan
15
error
DC compressor
16
rotation error
IPM overheat pre-
vention control.
17
IPM high tempera-
ture error
18 Thermal fuse error
✩1 The outdoor unit restarts four times before the indoor unit error is displayed (complete shutdown).

[2] TROUBLESHOOTING GUIDE

1. SELF-DIAGNOS IS FUNCTION AND DISPLAY MODE
1) To call out the content of the self-diagnosis memory, hold down the emergency operation button for more than five seconds when the indoor unit is
not operating.
a) According to the content of the self-diagnosis memory, the Operation LED (main category) and the Plasmacluster Ion LEDs (sub-category)
flash in sync with the Timer LED on the indoor unit.
b) In the event a complete shutdown occurs due to a malfunction, the Operation LED (red), Timer LED (yellow), Plasmacluster Ion LED (blue)
flash to indicate the general information of the generated malfunction.
c) If the power cord is unplugged from the AC outlet or the circuit breaker is turned off, the self-diagnose is memory loses the stored data.
2) Display of detailed self-diagnosis result with main category and sub-category indications When malfunction information is called out, the main cat-
egory and sub-category of the self-diagnose is result are indicated by the Operation, Timer, and Plasmacluster Ion LEDs on the indoor unit.
*1: Example of self-diagnosis result displayed on indoor unit: Suction thermistor open-circuit error
Timer LED [yellow]
Operation LED [red]
Plasmacluster Ion LED [blue]
*2:
The self-diagnosis display function of the outdoor unit indicates the error information by flashing LED1 on the
outdoor unit according to the content of self-diagnosis.
The self-diagnosis display function of the outdoor unit is active only for about 3 to 10 minutes after self-diagnosis is
performed during operation, and the display returns to normal condition after this display period.
The content of self-diagnosis cannot be called out by the self-diagnosis display function of the outdoor unit.
Example of self-diagnosis display on outdoor unit : Compressor high-temperature abnormality
0.5 sec 0.5 sec 0.5 sec 0.5 sec
ON
OFF
Description
When power source frequency cannot be
determined (at startup) or when power
source clock can not be detected for 1 con-
tinuous second (at startup).
Operation stops if there is no input of rotation
pulse signal from outdoor unit fan motor for
30 seconds.
Operation stops if rotation of compressor is
abnormal.
The compressor stops if the temperature of
Heat sink exceeds 90C.
When thermal fuse in the outdoor terminal
board below.
Basic flashing cycle due to error
ON
OFF
Figures in ( ) indicate numbers (binary notation) assigned based on the flashing sequence.
ON
Flashing for main category indication
OFF
Flashing for sub-category indication
0.5 sec
Operation
Detection time
At compressor
start up, when in
operation.
When outdoor
unit fan is in
operation.
During compres-
sor operation
During compres-
sor operation
1 sec 1 sec 1 sec
0.5 sec 0.5 sec 0.5 sec 0.5 sec
3 – 2
Restart condition
Compressor continues
operation without stop-
ping.
Operation OFF or ON.
Automatically restarts
after safety time.(180
sec.)
Automatically restarts
after safety time.(180
sec.)
Operation OFF
Main category
Malfunction No.
5 sec
0.5 sec 0.5 sec 0.5 sec 0.5 sec
Restart In Out
time door door
None Yes Yes
Yes ✩1
Yes Yes
8 times Yes Yes
No limit No No
1 times Yes Yes
Sub-category