782Error - Navien NCB-180 Service Manual

5.2.24 777Error
Error conditions and Check Items

5.2.25 782Error

Error occurrence conditions and check items
Is the LWCO
installed properly?
Yes
Does the power supply
LWCO properly?
Yes
Check LWCO
Is the wiring from the
front panel properly
connected to the PCB?
NO
Reconnect panel to the PCB
NO
Check the factory installed jumper
on the LWCO theminals (CN24)
NO
Check the connecting terminals
1.
step: Reset the unit.
Yes
2. step: If problem persists,
replace the PCB and Front
(CN25)