Pcb Abnormality - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

Troubleshooting by Remote Controller
2.2

PCB Abnormality

E1
Remote
Controller
Display
Applicable RQYQ-PY1B
Models
Method of Error Abnormality is detected under the communication conditions in the hardware section between
the indoor unit and outdoor unit.
Detection
Error Decision When the communication conditions in the hardware section between the indoor unit and the
outdoor unit are not normal.
Conditions
Supposed
Causes
Troubleshooting
104
Defective outdoor unit PCB (A1P)
Defective connection of inside/ outside relay wires
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Turn off the power once and
turn ON again.
Return to normal?
NO
Check if inside /
outside relay wires of
outdoor main PCB is
disconnected.
NO
YES
YES
SiBE341027
External factor other than
error (for example, noise
etc.).
Connect the inside/ outside
relay wires correctly.
Replace the outdoor unit
main PCB (A1P).
Service Diagnosis