Error code U7 Daikin VRV3 (troubleshooting)

Описание

Brand : Daikin VRV 3
Model : RXQ14PAY13
error code : U7

Description of Fault
Outdoor Unit Communication Error to Slave CU

Detail of Fault
This is a Communication problem between the Outdoor unit's in a multi module system.

This can caused if one of the slave Outdoor unit's has been turned off,or if the Outdoor PCB
has been set to look for a heat/cool changeover master.Apply power to the unit that has lost power. Change the heat/cool changeover setting back to master.

remember to disconnect the (X1A)clip, PCB power supply incoming clip after ermergency setting.
if not the error come U7 will happen again.