Version 1.4
100 NCB-E Service Manual
Fault
Possible Causes
Check method
Flame loss and noise
occurs after ignition
Digital pressure
manometer
Check the offset values for low fire
Model
Gas Type
Offset
NCB-150E
NG
-0.04 in ±0.01 in
LP
-0.03 in ±0.01 in
NCB-180E
NG
-0.04 in ± 0.01 in
LP
-0.03 in ± 0.01 in
NCB-210E
NG
-0.04 in ± 0.01 in
LP
-0.02 in ± 0.01 in
NCB-240E
NG
-0.04 in ± 0.01 in
LP
-0.02 in ± 0.01 in
Offset value for low fire
Flame loss during 2nd
stage
Blockage in the gas
orifice plate.
Flame loss will occur if the gas orifices are clogged.
●
Remove the gas inlet pipe and check for debris; remove and clean the orifice
plate if necessary.
Other trouble
Defective PCB
-
If the issue continues despite checking above items, replace the PCB.
