SiUS34-907 Troubleshooting by Indication on the Remote Controller
Troubleshooting 129
3.13 “E1” PCB Defect
Remote
Controller
Display
E1
Applicable
Models
RXYMQ36 · 48PVJU
Method of
Malfunction
Detection
Abnormality is detected under the communication conditions in the hardware section between the
indoor unit and outdoor unit.
Malfunction
Decision
Conditions
When the communication conditions in the hardware section between the indoor unit and the
outdoor unit are not normal
Supposed
Causes
Defect of outdoor unit PCB (A1P)
Defective connection of indoor-outdoor transmission wiring
Troubleshooting
Connect the indoor-outdoor
transmission wiring correctly.
Check if
indoor-outdoor transmission
wiring of outdoor main PCB
is disconnected.
Return to normal?
Replace the outdoor main PCB
(A1P).
YES
External factor other than
malfunction (for example, noise
etc.).
YES
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be
damaged.
Turn off the power once and turn on
again.
NO