KDB-GOM
Series
- 73 -
14 - 1
Others
Failure
Boiler is operating normally but water overflows
toward the expansion tank
No
Symptoms and Causes
Solutions
Reference
- There are many impurities in the heating water
of the heating pipeline and in the water pipeline
that are stuck on the water filling valve
solenoid
diaphragm and water slowly flows in
.
replace
and clean the
solenoid.
<Fig. 1>
1
The water fill valve is defective and
cannot stop water and heating water.
- Especially, in case the splitter material is
aluminum, corrosion is fast and there is
formation of much impurities. Replace with a
splitter in copper or stainless steel.
<Fig. 2>
2
Water overflows due to an internal sinking
of the hot water heat exchanger.
- If water still overflows after the checking above,
it is an internal sinking of the hot water heat
exchanger and the hot water heat exchanger
has to be replaced.
Flue EXhaust
Combustion Air Inlet
Domestic Water Outlet
Gas Inlet
Tap Water Inlet
<Fig. 1>
<Fig. 2>
Check hating pipeline condition
Check splitter valve’s material
Water filling valve
Internal
diaphragm