Saturn KDB - 161 GOM Manual page 59

2 - 2
Electrode
Assembly
Insulator damage
<Fig. 2>
<Fig. 1>
Power Transformer
No Symptoms and causes
4) No power supply to the modulating gas
control valve.
5) There is power supply to the
modulating gas control valve but it is
still not working.
6) There is power supply to the
modulating gas control valve and the
coil is not damaged but still there is no
ignition.
# 03 Failure
Measure resistance
High Limit Fuse
BLK BLK
Check AC 220V
- Check for a crack in the electrode insulator and
replace the electrode if found.
- Check whether the high limit fuse is short
circuited through resistance measurement. If it
shows an infinite level, it is defective and
needs to be replaced.
- Check for power supply (AC 220V) from the
transformer to the modulating gas control
valve. If there is no power supply, replace the
transformer.
- If the symptoms remain after performing the
check up described above, then replace the
controller.
- Check whether the modulating gas control
valve coil is short-circuited. If the resistance
measurement shows an infinite level, replace
the modulating gas control valve.
- The internal diaphragm of the gas control valve
is defective. Replace the gas control valve.
- Using the water manometer, check the first
and second head pressure (refer to gas
pressure chart of GOM technical documents,
and adjust the first and second pressure.
- 59 -
KDB-GOM
Ignition failure
<Fig. 2>
Modulating
Gas Control Valve
<Fig. 3>
Solutions
Series
Nozzle Holder
Assembly
Secondary
Pressure
Measuring Hole
4
<Fig. 4>
Reference
<Fig. 1>
<Fig. 2>
<Fig. 3>
<Fig. 4>
<Fig. 4>