Daikin RZQG71~140L7V1B Service Manual page 201

Troubleshooting by Remote Controller
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the connection of
connector X70A on indoor unit
PCB (A1P) normal?
YES
Is the connection of
connector X7A on adaptor PCB
(A2P) normal?
YES
Is the connector X8A on
adaptor PCB (A2P) not short
circuited?
NO
Is the harness disconnected?
NO
Is there an external factor
(noise, etc.) except for a fault?
NO
Turn OFF the power supply and turn
the power ON.
↓
Press the power switch on the remote
controller.
Error is displayed again?
YES
190
NO
NO
YES
YES
YES
NO
ESIE12-06
Connect the connector
accurately.
Connect the connector
accurately.
Short circuit X8A.
Replace the harness.
Eliminate the external factor.
Normal operation.
Check the panel PCB and
indoor unit PCB.
Service Diagnosis