Daikin VRV-WIII RWEYQ72PTJU Service Manual page 180

Troubleshooting by Indication on the Remote Controller
1. Pull out and insert the connecter once and check it is absolutely connected.
Note:
2. Method to check transmission part of indoor unit PCB.
172
N Turn OFF the power and remove the connecter X70A of indoor unit PCB (A1P).
O Short circuit X70A.
P After turning ON the power, check below numbers under field setting from remote controller.
(Confirmation: Second code No. at the condition of first code No. 21 on mode No. 41)
Determination 01: Normal
Other than 01: Transmission error on indoor unit PCB
 After confirmation, turn OFF the power, take off the short circuit and connect X70A back to
original condition.

SiUS30-1301
Service Diagnosis