Specifications

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