Ignition Transformer - Navien NCB300-28K Service Manual

4.7.6 Ignition Transformer

Item
Function
Fault
Symptoms
Error codes
Diagnostics
Testing/inspection
information
Input Voltage
230 V, 50 Hz
42 System Details
Provides voltage for the igniter for gas ignition purposes.
1. The igniter is unable to ignite the gas.
2. Results in multiple unsuccessful ignition attempts to.
1. The boiler does not ignite and error code E003 or E004 is displayed.
2. Durability of the transformer wears down.
E003, E004
1. Visual inspection: Check wire connections are secure and inspect for wire damage.
2. Voltage test: Test the voltage meets the specifications shown below.
BROWN - BLUE
On: AC 230 V
●
Off: 0 V
●
Output Voltage Output Current
±20 kV 10 mA, ±2 mA
Description