KDB-GOM
Series
- 75 -
14 - 3 Others Failure
Domestic water comes out but heating is not
working
No Symptoms and Causes Solutions Reference
1 The splitter valve is shut down. - Open the splitter valve.
2 Too much air inside the boiler and the
pipeline.
- Remove the air from the boiler and the pipeline.
3 Hot water is always ON because the 3-
way valve is defective.
- Replace the hot water flow switch.
- The 3-way valve is defective and shuts down the
heating. Replace the 3-way valve.
<Fig. 1>
4 There are many impurities in the heating
strainer and there is no heating
circulation.
- Clean the strainer by removing the clip below the
heating strainer.
<Fig. 2>
5 The heating pipeline is obstructed and
the heating water does not circulate.
- Clean the heating pipeline.
(contact the manufacturer)
6 Combustion is normal but the water
temperature goes up late and slowly.
- If the secondary gas supply pressure is
insufficient, adjust it according to capacity using
the water manometer.
- The heating area may be too big for the boiler
capacity. Check the area and the capacity
volume.
<Fig. 1>
<Fig. 2>
Check contact point
Hot Water Flow Switch
Heating Strainer
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