736Error - Navien NPE-180A Service Manual

5.1.24 736Error

Error occurrence conditions and check items
5.1.25 782Error
Error occurrence conditions and check items
116 NPE Service Manual
Is the Ready-Link cascade
cable properly installed
on all units?
NO
Reconnect cascade wire
Is the wiring from the
front panel properly
connected to the PCB?
NO
Reconnect panel to the PCB
Yes
Reset the unit
1 step: Reset the unit.
Yes
2 step: If problem persists,
replace the PCB and Front panel.
Version 2.21