15
Air in the installation
Perform venting of the installation
8
The circulation pump
does not switch on or
blow a fuse
No power on the electrical
connection. Loose connectors.
Check and tighten the screws at
the connection spots. Check and if
necessary, replace the fuses,
eliminate the malfunction of the
motor or installation connection
Capacitor failure
Replace the capacitor
Rotor blockage
Before the start of each heating,
examine the easy rotor turning. Hot
water deposition may lead to rotor
blockage. Turn around the motor
shaft with a wrench until free
turning of the rotor is enabled.
The pump is blocked due to
sediment
Disassemble and clean the pump.
9
The thermometer or
manometer does not
show the amount of
temperature or water
pressure in the
installation
Thermometer or manometer
failure
Replace the thermometer or
manometer
10
Noise (sounds) from the
eating system
Defective pump. Great clearance
between the rotor shaft and
bushings
Reduce pump speed. Replace the
pump envelopes or the entire pump
The pump is functioning at too
high speed
Select low speed.
Air in installation
Release air from the heating
system
Loose knobs or some screw on
the stove
Tighten knobs and screws
11
Sounds in the pump
The pressure at the pump suction
part is to low
Increase system pressure or check
the expansion vessel.
12
The stove overheats,
loud noise (cracking) is
heard in the boiler of the
stove.
Electricity outage has occurred,
the circulation pump does not
work and the boiler of the stove
overheats. There is a danger of
boiler rupture.
To avoid this occurrence, it is best
to have backup battery power
supply of the circulation pump with
an inverter.
Installation of a thermal exhaust
valve (Fig. 7, pos. 13) is required
as additional security against stove
overheating.
If you do not have backup supply of
the circulation pump or a thermal
exhaust valve installed, then you
should open the bypass valve
connected in parallel with the
circulation pump on the pipeline
system and remove embers from
the stove.
13
Cooling thermal fuse is
activated (thermo valve)
because
water temperature
increased over 95
C due
to:
- loss of electricity
This is proper and do not touch
anything. When the system is cold,
thermal valve will be closed.
After that, check the pressure in
the installation and fill the system to
the required.
