Metal-Fach SMART EKO-CARBON Series, Operation And Maintenance Documentation, Page: 22 / 38

21
Question Answer Explanation
The blower fan is not working? The blower fan is not working because it might be unplugged.
The boiler has overheated and STB protection has
intervened.
Put the blower plug back in.
After the boiler has cooled down, press the STB button.
Is it allowed to fill up the
installation with water while
the boiler is working? Filling up the installation while the boiler is working is
absolutely forbidden. Letting water into the boiler runs the risk of unsealing the boiler and installation. If the boiler is overly
heated it may unseal and crack.
In the case of an oversized boiler, the temperature is reached very quickly making the boiler idle and the
fumes gases burn out causing grime collection. The worst scenario is when the temperature is too low. If
the boiler is not connected properly, it becomes a thermostat, which means that if you want to lower the
temperature in your house, you need to lower the boiler temperature. It is recommended to install mixing
valves.
Is it advisable to install a four-
way valve? Yes, it is advisable to install a four-way valve. A four- way valve is a very useful device which:

protects the boiler against low temperature corrosion, mixes the infeed water with return so as to
achieve a stable agent for the central and floor heating
 enables smooth temperature control by an actuator, saves fuel, protects the boiler from corrosion and
prolongs boiler life span.
What is central tap water
priority? The central hot tap water priority is a controller feature that
heats up the hot tap water vessel and then activates the
central heating. The feature is used in hot tap water consumpiton conditions.
What is hot tap water
decontamination? It is a feature of the controller that heats up the tap water
tank to 70
o
C in order to decontaminate it.
The feature kills the Lagionaella bacteria in the central tap water circuit. If the water in the tank is kept
below 50
o
C, the bacteria settles. The situation is possible to take place when the tank temperature is kept
below 50 o C or when the taps are rarely open.
What is the anti-lock? Antilock feature works only with pellet. The main purpose of the device is to keep the heat in the furnace. If the boiler shuts off after reaching the
required temperature then, provided the temperature does not fall, the antilock ativates for 5-10 seconds
every 20 minutes. The antilock can be set according to the preferences and boiler power. Usually, it is set
for 5 seconds.
The feeder engine is working
but not stoking. The engine is working but not stoking because the pin is off
or the feeding screw is worn off. Replace the pin.
Replace the feeding screw.
What fuel can I use in boilers
with a gutter feeder? Pellet can be burned in boilers with a gutter feeder. Pellet with granulation Φ 6-8
The feeder does not work and
the engine is humming. The feeder does not work and the engine is humming
because it is probably blocked and the pin is off. Another
reason might be that the engine capacitor is worn off. Open the cleaning hatch door, remove the „foreign body” e.g. a stone.
Replace the engine capacitor.
The feeder engine is
overheating.
The feeder engine is overheating because the capacitor is
worn off. Replace the engine capacitor.
Why is the pin off? The pin is off because the pellet granulation is different than
recommended, there are too much saw dust in pellet. The
fuel might be wet or there is sinter in the burner. Change pellet.
Dry off the fuel.
Clean the burner.
The fuel is burning on one side
of the burner only. It happens because the burner air chamber is dirty. There is
no sealing under the retort collar or the ventilator is broken. Clean the burner air chamber.
Put on the sealing cord.
Clean the ventilator.
Why is the fuel burning in the
boilers
with automatic
feeding.
It is due to bad feeding times. Blower settings are wrong. Adjust fuel feeding and/or the blower (see the setting table).
Call the helpline.