TROUBLESHOOTING
25
8.
TROUBLESHOOTING
Problem
Cause
Solution
The lamps of the
control panel do not
light
- no electrical supply to the lamp
- the control panel is not
connected to electricity
- lamp defect
- electric cable defect
- check/replace the lamp
- connect to electricity
- check/replace the cables
The boiler does not
reach
set
temperature
- fan blocked
- air passages are blocked
- boiler is not cleaned
- incorrect boiler start-up
- insufficient water in the system
- too big pump debit
- boiler under dimensioned
- bad quality fuel used
- insufficient chimney draught
- check/replace the fan, check the
function of the fan regulator and
thermostat
- clean the air passages
- clean the boiler
- start the boiler correctly
- fill the system
- regulate the pump speed
- change the fuel used
- check/clean the chimney
High temperature in
the boiler, but low
temperature at the
radiators
- too high hydraulic resistance in
the heating network
- thermostatic mixing valve is
connected wrong
- increase the pump speed
- check/replace the mixing valve
Condensation
formation in the fire
chamber
- too big boiler power
- too low return temperature in the
boiler
- fuel with excessive humidity
- load less fuel in the chamber
- install a return protection
system/thermostatic valve
- change the fuel used
Smoke coming out of
the doors
- boiler doors not regulated
- defect sealing cord of the door
- insufficient chimney draught
- too high air supply by the fan
- regulate the doors so that the
sealing cord stays tight
- check/replace the sealing cord
- check/clean the chimney
- reduce the air speed
The fan does not
function or it makes a
lot of noise
- set temperature reached
-
disconnected
by
safety
thermostat
- capacitor/motor defect
- bad electrical connection of the
fan
- correct boiler function
- reset manually
- check/replace the fan
- check the electrical connection of
the fan
