Ecodense WT-S DHW 45 H, Installation, Operating And Maintenance Manual, Page: 26 / 28

04.12.2020 Rev. 00 25
15. SOLUTION RECOMMENDATIONS FOR SOME OF THE PROBLEMS
Problem Cause Explanation-Recommendation
Gas smell
Gas line/Gas
connections
Control of leak proofing of connections is required.
Be sure that measurement points are closed.
Unburned gas smell Flue tightness
Be sure that flue connections are leak proof and
measurement points are closed. Check the
combustion parameters.
Incomplete combustion
Gas supply pressure Check the gas pressure complies with stated
values.
Fan problem Check the working of fan.
State of premix
combustion head and
heat exchanger
Check the state of combustion head and heat
exchanger and ensure that both are clean.
Combustion air
connection
Check that there is nothing that blocks air suction
and if the impulse connection is correct.
Shaky activation of burner
Gas
pressure/Combustion
parameters
Check the gas pressure and combustion
parameters.
No combustion after
ignition
Electrode/Ionization Check the position/state of the electrode/ionization
rod.
Boiler does not work.
Electric connection
Check the fuse and electrical connections.
Sensor connections
Ensure that connections of sensors are correct and
complete.
Boiler can’t reach the
desired temperature.
Gas pressure
Ensure that gas pressure complies with stated
values and there is constant gas flow at sufficient
pressure.
Heat exchanger Control the state of combustion chamber.
Boiler control
Control that boiler is at correct operation mod and
temperature settings.
Safety valve activates
often.
Safety valve
Ensure that safety valve settings are correct and
works properly.
Expansion tank Check if it works properly.
Pump does not work. Pump malfunction
Check the pump electric connections and
parameters. Change the pump if there is proble in
pump operation.