Activation Of Low Pressure Sensor - Daikin SkyAir RZR-TA Series Service Manual

SiUS281811EA

4.30 Activation of Low Pressure Sensor

E4
Error Code
Applicable All outdoor units
Models
Method of Error Abnormality is detected by the pressure value with the low pressure sensor.
Detection Use the outdoor main PCB to determine the low pressure sensor pressure test value.
Error Decision
Error is generated when the low pressure drops below a specific pressure level.
Conditions Low pressure drops after compressor activation.
Operating pressure: 0.07 MPa (10.2 psi)
Supposed
 Abnormal drop of low pressure
Causes  Defective low pressure sensor
 Defective outdoor main PCB
 Stop valve is not opened
Part 6 Service Diagnosis
Troubleshooting by Error Codes
255