Saturn KDB - 301 GOM - What’s a Pseudo Flame?

KDB-GOM
Series
- 61 -
3 # 04 Failure Pseudo flame
No Symptoms and causes Solutions Reference
What’s a pseudo flame?
Combustion takes place normally but a
flame is detected in the combustion area
before the modulating gas control valve
starts operating inducing the boiler to stop
its operation.
1 The boiler operation is stopped and
power is supplied to the modulating gas
control valve.
- If power is supplied then the controller is
defective. Replace the controller.
<Fig. 1>
2 There is no power supply but there are
small flames in the combustion area
when the boiler stops operation.
- There is a problem with the diaphragm inside
the gas control valve. Replace the gas control
valve.
- If the symptoms remain after performing the
check up described above, then the controller
is defective and has to be replaced.
<Fig. 2>
<Fig. 1>
<Fig. 2>
Modulating Gas Control Valve
Main Controller
Internal diaphragm