Outdoor Unit Main Pcb Abnormality - Daikin REYQ-XA Service Manual

SiUS371901E

3.30 Outdoor Unit Main PCB Abnormality

E1
Error Code
Applicable
All outdoor unit models
Models
Method of Error
Abnormality is detected under the communication conditions in the hardware section between the
Detection indoor unit and outdoor unit.
Error Decision When the communication conditions in the hardware section between the indoor unit and the
Conditions outdoor unit are not normal
Supposed
Causes
Troubleshooting
Service Diagnosis
Defective outdoor unit main PCB (A1P)
Defective connection communication line between indoor and outdoor units
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn OFF the power once and
turn ON again.
Return to normal?
NO
Check if
inside/outdoor
relay wires of outdoor
unit main PCB is
disconnected.
NO
YES
YES
Troubleshooting by Error Code
External factor other than
error (for example, noise
etc.).
Connect the communication
line correctly.
Replace the outdoor unit
main PCB (A1P).
290