Navien NCB-24LSWE, Руководство по обслуживанию

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NCB Service Manual 81 Version 1.0
Error
Code Sub
Code
Function Diagnosis/Actions
E517
0 Dip switch setting error
Check the dip switches on the front panel
and the PCB.
E594
0 EEPROM operation error Check the PCB.
E615
0 Heat exchanger 1, high limit switch input data error Check the PCB.
1 Exhaust sensor input data error
1. Check the exhaust sensor wiring
connections.
2. Check the exhaust sensor.
2 Flame rod input data error
1. Check the flame rod wiring
connections.
2. Check the flame rod.
3-14 PCB memory error Check the PCB.
15-16
Pressure sensor input data error
Sub code 15: < the range
Sub code 16: > the range
1. Check the pressure sensor wiring
connections.
2. Check the pressure sensor’s output
voltage.
E740
1
Outdoor temperature sensor open error
(appears only when outdoor reset is enabled).
1. Ensure that outdoor reset curve is
correctly configured.
2. Check the outdoor temperature
sensor’s wiring connections.
2
Outdoor temperature sensor short error
(appears only when the outdoor reset is enabled).
E782
0 Main panel communication error Check the PCB.
If the actions contained in the table above do not resolve the boiler fault, contact the Navien technical support team on 1-800-
519-8794.
To assist with fault resolution, error codes are displayed on the front panel and saved on a PCB board in the boiler providing a
record of the faults and failures that occur.
IMPORTANT
To reset the boiler, either press [Reset] on the front panel or turn off the boiler’s
power supply and then turn it on again.