Troubleshooting Guide - Sharp AE-XM30GR Service Manual

NO. Function
IPM overheat pre-
vention control.
14
IPM high tempera-
ture error

[2] TROUBLESHOOTING GUIDE

1. SELF-DIAGNOS IS FUNCTION AND DIS PLAY 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 LE D 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),
and Plasmacluster Ion LED (green) 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
Lowers the operating frequency if the tem-
perature of IPM rises high temperature.
Stops the compressor if the tem-perature
srays high for 2 minuteS at minumum fre-
quency.
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
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
Automatically restarts after
safety time.(180 sec.)
Main category
Malfunction No.
5 sec
0.5 sec 0.5 sec 0.5 sec 0.5 sec
No limit No No
Sub-category