Viadrus GARDE G 42 ECO, Manual For Operation And Installation

Page: 49 / 60

49
16. Defects and their elimination (rectification)
The defects can only be eliminated by a trained contractual service organization which is also obliged to
enter the repair in the guarantee certificate.
The defects market with symbol “
∗∗∗∗
„ can be eliminated by the user himself.
If the safety thermostat or the combustion products return flow fuse get repeatedly blocked it is also
necessary to call a contractual service worker.
DEFECT REASON ELIMINATION
1. After having switched on the boiler
the control lamp on the main
switch does not light up No voltage on the boiler inlet Check the voltage in the socket
Faulty control lamp
Faulty fuse Exchange the switch
Exchange the fuse
2. Boiler cannot be started – the
ignition electrode for pilot burner
ignition does not sparkle.
Faulty automatics Exchange the automatics
Interrupted inlet to the ignition Check the perfect connection between
the electrode and the HV output to the
automatics
Faulty electrode Exchange the electrode
3. Boiler cannot be started –
sparkling runs in the automatics
spark gap (discharger) (audible
sparkling sound in automatics)
(only the natural gas)
Wrong spark gap(discharger)
setting Adjust according to Fig. no. 4a, 4b
Wrong conductors connection to
electrodes or a faulty electrode Check the electrodes condition and
connection
of ignition and earth
conductor
4. Boiler doesn’t ignite - the ignition
electrode is sparkling– Hon. Ts´=
55 s; SIT Ts´= 60 s (on the burner
automatics the „ALARM“ control
lamp lights up in the automatics
with signalisation Boiler gas supply is interrupted Check the gas pressure in gas
connection
* Check the appliance gas closure
opening
Gas piping air lock Bleed the piping
Gas valve does not open Valve exchange
5. Boiler lit but is out immediately
(on the burner automatics the
„ALARM“
signal lamp of
automatics with signalisation lights
up)
Wrong connection between the
zero and phase conductors
Check and exchange the connection
terminal U – phase conductor
terminal N – zero conductor
Wrong diameters of gas nozzles in
burner Check whether the nozzles diameter in
the main burner corresponds to the
values in tables no. 2 – 5.
Impassable filter of course
impurities on gas valve inlet
Clean the gas valve filter by blowing out
(in
case of fine impurities the
dimensions of which are the same as
the filter mesh diameter the whole gas
valve must be exchanged)
6. Boiler cannot be ignited– the
safety thermostat switched off (on
the control panel in the network
module the exceeded temperature
signal lamp lights up) Faulty boiler thermostat Exchange the boiler thermostat
* Unblock the thermostat in network
module - TB
Insufficient water circulation
(the pump doe not work) * Switch over the revolutions
Check the pump operation (release the
rotor)
Exchange the pump
filter clogged before the pump * Clean the filter
Lack of water in the system * Check the water pressure in the system
and possible water refilling
Check the pressure in the expansion
tank (if a closed heating system is used)
* Check the three-way valve
(if the HWS heating is connected)
7. Boiler does not switch over
between the rated and reduced
output at the temperature set on
the outdoor thermostat and the
reduced output switch is in
position “I” (only at the boiler
equipped with double stage gas
valve) Faulty outdoor thermostat If need be exchange outdoor thermostat
Interrupted connection between the
outdoor thermostat and the boiler Check the connection
Faulty High-Low coil Exchange the coil