![background image](http://html1.mh-extra.com/html/daikin/lryeq16ay1/lryeq16ay1_service-manual_3234341256.webp)
Troubleshooting
SiBE811001EB
255
CONVENI-PACK
8.5.4 Low Pressure Sensor Abnormality
Error Code
E4
Applicable
Models
LCBKQ3AV1
Method of Error
Detection
Abnormality is detected by the pressure value with the low pressure sensor.
Error Decision
Conditions
Error is generated when the low pressure is dropped under compressor operation.
Supposed
Causes
Abnormal drop of low pressure
Defective low pressure sensor
Defective outdoor unit PCB
Stop valve is not opened
Refrigerant shortage
Moisture choke
Clogging of electronic expansion valve
Dirty filter in showcase
Dirty filter in booster unit
Defective of defrost in showcase
LED Indications
First digit
l h k h h l l
Second digit
l k h h l h h
&
• Operating pressure: -0.015MPa
• Freezer operation input is ON.
• Detected within 90 seconds after power ON.