BaltGaz NEVALUX-8224 User Manual page 30

Cod
Failure
e
No draught
03
Boiler doesn't operate 1
Insufficient heat carrier
pressure in the CH. Air
04
lock in the heating system .
The boiler doesn't work 2
CH temperature sensor
05
failure. The boiler does not
operate**
Failure of DHW
temperature sensor Boiler
06
works in heating mode
only**
Failure of modulator coil of
07
gas supply regulator
Boiler doesn't work**
1 After eliminating the failure it is necessary to press the button К6 (RESET) (see p. 3.1, page 8);
2 After failure elimination the boiler is launched automatically.
Reason of failure
The smoke exhauster or the air inlet duct is
contaminated
The air pressure switch's tubes' air
tightness is damaged
Electric circuit of air pressure switch is
damaged
The air pressure switch is damaged ( the
contacts of pressure switch should close at
pressure drop from 130 Pa)
Condensate in air pressure switch tubes
User and technical staff manual
Electric circuit of the fan is damaged
The fan is out of order
Low heat carrier pressure in the CH
Air lock in the heating system.
The heat carrier pressure sensor of the
CH is out of order
The electric circuit between the temperature
sensor and the electronic board is damaged
The pump or air outlet valve is out of order
The CH temperature sensor is out of
order
The electric circuit between the temperature
sensor and the electronic board is damaged
DHW temperature sensor is out of order
The electric circuit between the DHW
temperature sensor and the electronic board
is damaged
Broken modulator coil of gas supply
regulator
Electric circuit "modulator coil- electronic
board" is damaged
34
Troubleshooting
Figure out the reason of
contamination and remove it .
Replace the tubes
Check the electric circuit and contacts
Replace air pressure switch
Remove condensate out of air pressure
switch tubes
Check the electric circuit and contacts
Replace the fan
Bring the heat carrier pressure in the
CH to the recommended value (see p.
10.1, page 22)
Open the air outlet valve (see p.
16.2.2.5 , page 39)
Replace the sensor
Check the electric circuit and contacts
Replace the pump or the air outlet
valve
Replace the CH temperature sensor
Check the electric circuit and contacts
Replace the DHW temperature sensor
Check the electric circuit and contacts
Replace gas supply regulator
(resistance of modulator coil 80 Ohm)
Check the electric circuit and contacts