Haier DW-86L288 Service Manual page 64

1.E0 alarm Ring temperature sensor input voltage
≥ 4.9V, the sensor open; ≤ 0.1V, the
short‐circuit
2.E1 alarm When the condenser sensor input
voltage ≥ 4.9V, the sensor open; ≤
0.1V, the short‐circuit
3.E2 alarm Main sensor input voltage ≥ 4.9V, the
sensor open; ≤ 0.1V, the short‐circuit
4.E3 alarm Heat exchanger sensor input voltage ≥
4.9V, the sensor open; ≤ 0.1V, the
short‐circuit
5. The condenser Condenser
dirty, alarm condenser temperature minus the
difference in ambient temperature ≥
13 ° C (for five minutes), alarm
occurred
6. Battery low ≤ 10.5V battery power, battery low
alarm alarm
probe perception of
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1.Check the ambient temperature sensor terminal plug bad or
falling; sensor for damage
2 Check the display board sensor connector terminals are loose or
poor contact; whether the display panel damage
1.Check the ambient temperature sensor terminal plug bad or
falling; sensor for damage
2 Check the display board sensor connector terminals are loose or
poor contact; whether the display panel damage
1.Check the main sensor terminal plug bad or falling; sensor for
damage
2 Check the main control board sensor plug terminal is loose or
poor contact; master plate for damage
1.Check the heat exchanger sensor terminal plug bad or falling;
sensor for damage
2 Check the main control board sensor plug terminal is loose or
poor contact; whether the display panel damage
3. Replacement spare sensor
4. "E3", long press to "beep cancel" after 5 seconds, "E3" alarm
will disappear when the alarm. The temperature stage one minute
after the start of the Low Temperature startup
1.Open the front grille and clean the filter
2.Check whether the condenser probe away from the condenser
outlet too close
3.The condenser probe take Changuo processing tape
1.Investigation and whether the battery have expired
2 the troubleshoot battery switch on terminal block whether the
patch well or switch is damaged
3.Investigation and charging circuit is normal: strong power after
five minutes on the refrigerator, the test master board battery
terminal voltage output, the output voltage should be ≤ 5V