Navien CR-180 Installation Manual page 39

6. Error display
I n case of the error condi ti on i n the cascade sy stem , a rele v ant error and u ni t are di splay ed on the
remote controller .
E rror di splay e xample:
1 ) E rror code 3 5 of the master u ni t
2 ) E rror code 3 5 of the slav e 1 u ni t
Error U nit: Master
Error Code
i-+----�
Error Unit: Slave 1