Ignition Transformer - Navien NHB-055 Service Manual

4.9.6 Ignition Transformer

Part
Function
Failure Event
Effects
Error Code
Diagnostic
Testing/inspection
information
Input Voltage
120 V, 60 Hz
70 NHB Service Manual
Continuously provides a high voltage to flame rod until gas ignites.
1. Unable to ignite during the ignition process.
2. Produces multiple unsuccessful attempts to ignite.
1. The unit cannot ignite during the ignition process and "E003" or "E004" error codes will display.
2. Durability of the igniter wears down.
E003, E004
1. Visual inspection: Check wire connections are secure.
2. Voltage check: Check range of voltage shown below.
Blue
On : AC 97 ~ 138 V
●
Off : 0 V
●
Output Voltage Output Current
20 KV± 10mA±2mA
Check Point
Version 1.0