Low Water Level; Symptoms And Causes - Saturn KDB - 161 GOM Manual

1 # 02
Splitter valve
Check valve is open
<Fig. 1>
No

Symptoms and Causes

1 The heating flow sensor has to be ON within
3 seconds after the power supply. If it is still
OFF after 3 seconds, the failure code # 02
will be displayed.
1) Heating valve (Splitter) is closed.
2) Heating water is lacking.
3) Too much air in the heating line.
4) The circulation pump is working but there
is not enough RPM or the impeller is
damaged.
5) There is no point of contact in the heating
flow sensor.(close model)
Failure
0.5
1.5
(49)
(147)
kgf/
(kPa)
Heating Pressure gauge
<Fig. 2>
- Open the splitter valve
- Adjust the heating pressure gauge between
0.5~1.5kg
- Remove air from the heating line.
- Check the resistance of the circulation pump
coils terminal. 0 level is normal. If it shows
infinite level the coil is short-circuited and the
circulation pump has to be replaced.
- When the boiler is running and the heating flow
sensor point of contact is normal, the
resistance should be 0. if it shows an infinite
level it is defective and has to be replaced.
- Reconnect the boiler earth wire.
- 57 -

Low water level

Measure
resistance
Circulation pump
<Fig. 3>
Solutions
2
/cm (49 ~147 kPa)
f
KDB-GOM
Series
Heating flow sensor
<Fig. 4>
Reference
<Fig. 1>
<Fig. 2>
<Fig. 3>
<Fig. 4>