Robur B15 Generators Series, Installation, User And Maintenance Manual

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Installation, user and maintenance manual – Series B15 Generators
31
5 seRVICe And AssIstAnCe
5�1 MALfUnCtIons
Before taking any particular measures, always check that:
the power supply is present: 230 V ± 10% 50 Hz with an effective ground plant; •
the gas supply is present; •
the gas pressure and flow rate must be in the range specified by the •
manufacturer.
A lower pressure than that indicated by the manufacturer corresponds to an insufficient
gas supply. The causes may include:
insufficient gas flow meter; •
excessive length/number of bends in the gas pipe for the dia. in use. •
Only if the appliance passes these basic checks, proceed to troubleshoot the problem in
question.
Before opening the appliance’s side hatch to access its electrical panel, SHUT OFF POWER
to the appliance with the master power switch on its power cable.
table 5�1
Led on desCRIPtIon of MALfUnCtIon CAUse ResPonse
steady
Flame locked out due to failure to ignite
burner
• The ignition electrodes are broken or badly
located.
• The detection electrode is broken or badly
located, or is in contact with the appliance’s metal
frame.
• Circuit board/electrical connection failure.
• Gas valve/electrical connection failure.
• Ineffective ground plant.
• Air in the gas hose or no gas supply.
• Incorrect gas valve setting.
Reposition or replace the electrodes.
Reposition or replace the electrode.
Replace the circuit board.
Replace the gas valve.
Restore the ground plant.
Vent the air in the gas hose.
Reset the gas valve.
Once the cause of the malfunction has been
identified and eliminated, press button B on the
wall panel (see figure 4.1
→
29).
flashing (on: 4 sec; off:
1 sec)
Limit thermostat tripped due to
overheated heat exchangers.
• Dirt accumulation on the air intake.
• Delivery outlet blocked.
• Fan malfunction.
• Generator power failure during operation.
Once the cause of the malfunction has been
identified and eliminated, reset the limit
thermostat pressing button B on the wall panel
(see figure 4.1
→
29).
flashing (on: 1 sec; off:
4 sec)
Blower failure.
• Poor electrical connections.
• Blower motor malfunction.
• Poor performance.
The malfunction indication is automatically reset
once the cause of the malfunction has been
eliminated.
malfunction NOT
indicated by wall panel
The burner switches off and does not
start again even if the room temperature
requires it to do so.
• The room thermostat is positioned in such a way
as to be affected by sources of heat or the flow
of hot air.
Reposition the room thermostat.
Malfunctions.
5�2 CLeAnInG tHe ReMoVABLe BURneR
The burner of series B15 generators can be removed: this is especially useful for
cleaning.
The burner should be cleaned every two years. If the appliance is installed in especially
dirty conditions (in the presence of welding and grinding equipment or other machin-
ery) clean the burner once a year before the start of the winter season.
The burner must be removed and cleaned by professionally qualified personnel. In-
correct or careless assembly of the gas circuit can result in hazardous gas leaks along the
circuit, especially in the areas directly affected.
To clean the burner, proceed as explained below (see Figure 5.1
→
32).