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Cod
Failure
e
Failure of modulator coil
07
of gas supply regulator
Boiler doesn't work**
* After troubleshooting it is necessary to push a button К6 (RESET)
3.1
(see p.
, page7);
** After troubleshooting boiler starts up automatically.
14.2 Other failures
Failures that don't have any code are displayed on the boiler's control panel (see p.
Failure
Boiler doesn't switch on
Claps in burner
Smell of gas
Little hot water output
or its absence
Set hot water temperature
is not maintained
(too high)
Boiler doesn't work in
CH mode
(but works in DHW)
Inlet water temperature
in the heating system is
lower than the set one
Reason of failure
Broken modulator coil of gas supply
regulator
Electric circuit "modulator coil-
electronic board" is damaged
Reason of failure
Lack of electricity
Fuse is burnt
Water entry on the electronic board
Electronic board failure
(RESET doesn't help)
Minimal gas pressure and ignition
power are wrong adjusted
Lack of air supply
Electrode spark of ignition plug slips
on the edge of burner section or the
shell of combustion chamber
Burner block is contaminated
Gas leakage
Lack of inlet DHW water pressure
Water filter is contaminated
Heat exchanger is contaminated
High temperature of inlet water
Little water flow through DHW line
Jumper of the room thermostat is
absent
Room thermostat's jumper connecting
pins 28 and 29 is failed (см. Annex
III
, page 53)
Failure of room thermostat (if it is
installed)
Failure of CH temperature sensor
Troubleshooting
Replace gas supply regulator
(resistance of modulator coil 80
Ohm)
Check electric circuit and pins
3.1
, page7) as follows:
Troubleshooting
Address to the service
Replace fuse on the board
Dry the board by means of warm air or leave
it for 2 days in a dry place for full ware
evaporation
De-energize and re-start boiler
Replace electronic board
Adjust minimal gas pressure (see p.
23) and ignition power "P0" (see p.
page 26)
Clean a tube or air duct valve
Bend the ignition plug or shell of combustion
chamber allowing a spark to slip on the
aperture area of the nozzles of burner section
Clean burner block
16.1.1
(see p.
, page 32)
Check all the gas line on air-tightness (see
8.2
p.
, page13),
Remove gas leakage
Address to the Housing and Public utilities
service
Clean the filter on DHW line
Clean heat exchanger
16.1.3
(see p.
, page 33)
Increase water flow through DHW or mix
how water with cold and don't let flow
reduce through DHW
Increase water flow through DHW
Install a jumper of the room thermostat
Replace a jumper of a room thermostat
Replace a room thermostat
Clean temperature sensor from scale (if dip
temperature sensor is used)
Replace temperature sensor
User's manual
Table 5
11.4
, page
13.3.1
,
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