Viadrus G 90 Series, Эксплуатация и установка

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11. Defects and their elimination
The defects elimination is only allowed to be done by a trained contracting service organization which also is
obliged to make an entry in the enclosure to the certificate of warranty.
Defects elimination marked with symbol “
∗∗∗∗
„ is allowed to be done by the user.
If there occurs repeatedly the blockage of the safety thermostat or the combustion gases reflux fuse
it is also necessary to call a contracting service worker.
The operation faults related to RVA regulator are described in basic technical documentation to the
regulator.
DEFECT CAUSE ELIMINATION
1. After the boiler has been
switched on the control light
on the main switch isn’t
alight
No el. voltage at the boiler
input
Check the voltage in the socket
Faulty control light Exchange the switch
2. Boiler cannot be started -
the ignition electrode isn’t
sparkling
Faulty automatics automatics replacement
Interrupted inlet to the ignition
electrode
Check of a perfect connection between
the electrode and HV output on the
automatics
faulty electrode electrode replacement
3. Boiler cannot be started -
sparkling occurs in the
automatics spark gap
(sparkling
in automatics
audible sound)
Wrong connection between the
conductors and or a faulty
electrode Check the electrodes condition and the
connection between ignition conductor
and the earth-wire
4. Boiler doesn’t light up the
ignition electrode is
sparkling (the fault
signalling lights up on the
control panel)
The gas inlet to the boiler is
interrupted
Gas pressure check in the gas
connection
* Check whether the gas cap at the
appliance is open
Gas pipe air lock Do the air exhaustion (bleeding)
The gas valve doesn’t open Valve replacement
5. Boiler light up but
immediately goes out; the
fault signalling lights up on
the control panel.
Wrong connection between the
zero and phase conductors
Check and change the connection
terminal U - phase conductor
terminal N - zero conductor
Impassable dirtiness filter at
the gas valve inlet
Clean the gas valve filter
Boiler thermostat fault * Unblock the TB network module
6. Boiler cannot be lit – the
safety thermostat is
switched off
(“overheated “ signalling is
alight on the control panel)
Water shortage in the system
* Check the water pressure in the system
and eventually refill the water
Insufficient water circulation in
the system
Check the pressure in expansion tank
(if the closed heating system is used)
Check the pumps operation
Clogged chimney Clean the chimney
7. Combustion gases reflux
fuse is blocked
A strong wind is causing the
countermove
* Unblock the fuse by using the
pushbutton called "UNBLOCKING" in the
network module