Activation Of High Pressure Switch - Daikin SkyAir RZR-TA Series Service Manual

SiUS281811EA

4.29 Activation of High Pressure Switch

E3
Error Code
Applicable All outdoor units
Models
Method of Error Abnormality is detected when the contact of the high pressure switch opens.
Detection Use the protection device circuit to test high pressure switch conduction.
Error Decision
Part of the protection device has an open circuit.
Conditions Error is generated when the high pressure switch activation count reaches the number specific to
the operation mode.
Reference
Operating pressure: 4.0 MPa (580 psi)
Reset pressure: 3.0 MPa (435 psi)
Supposed
 Activation of outdoor unit high pressure switch
Causes  Defective high pressure switch
 Defective outdoor main PCB
 Instantaneous power failure
 Defective high pressure sensor
Part 6 Service Diagnosis
Troubleshooting by Error Codes
253