SUN G50 - G70
37
Italiano
English
Français
Deutsch
Español
Checking the parts and components
Pump
The pressure must be stable at the value set during installation, and in any case between 10 and 14 bars.
No noise must be produced.
In the case of instable pressure or noisy pump, disconnect the flexible pipe from the line filter and feed
in the fuel from a tank located near the burner. This identifies whether the cause of the anomaly is the inlet
pipe or the pump.
Filters
Check and clean or replace, if necessary, the filters in the line, pump and nozzle.
If there is rust or other impurities in the pump filter, use a separate pump to remove water and other
impurities from the bottom of the tank.
Fan
Check that dust is not accumulated inside the fan and on the rotor blades: this reduces the air flow and
causes, as a consequence, polluting combustion.
Combustion head
Check that all the parts of the combustion head are intact, not deformed by the high temperatures, free
of impurities from the surrounding environment, and correctly positioned.
Nozzles
Avoid cleaning the hole of the nozzles, so as to not damage them
Replace the nozzles every 2-3 years, or when necessary. Combustion must be checked when changing the
nozzle.
Photo cell
Clean the glass for dust. The photo cell is pushed into place; to remove it, simply pull it out.
Flexible pipes
Check that they are in good condition, that they have not been stepped on or deformed.
Tank
Every 5 years or so, remove the water from the bottom of the tank using a separate pump.
No electrical power /
Close the switches, check the fuses
Appliance shut-down/
Reset the appliance
Electrical devices defective/
Replace
Pump blocked/
Replace
Electric motor defective/
Replace
Electrical connections incorrect /
Check
Photo cell short-circuited/
Replace the photo cell
External light strikes the photo cell/
Eliminate source of light
Electrical devices defective/
Replace
Oil valve defective/
Replace
No fuel in the tank, or water on the bottom/
Top up fuel or remove the water
Oil supply valve closed/
Open
Filters dirty (line – pump - nozzle)/
Clean
Pump not primed/
Prime and look for cause of loss of prime
Ignition electrodes poorly adjusted, or dirty/
Adjust or clean
Nozzle blocked, dirty or deformed/
Replace
Head and damper poorly adjusted/
Adjust
The burner does not ignite
During pre-ventilation, the
burner shuts down
The burner performs the pre-
ventilation and ignition cy-
cle, but there is no flame and
the burner shuts-down.
3.4 Troubleshooting
Problem
Possibile causes/
Recommended solution
