Ferroli PREXTHERM RSW 720N-1060N, Instruction For Use, Installation And Assembly

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53 EN
PREXTHERM RSW N
A73020801
The boiler will run the ignition phase, and will remain on until the set temperatures have been reached. If problems occur during ignition or
operation, the boiler will “LOCKOUT,” as signaled by the red light on the burner and the red indicator on the control panel. After a “LOC-
KOUT,” wait about 30 seconds before resetting the ignition conditions. To reset the ignition conditions, press the burner “button/light” and
wait for the flame to ignite. If this operation fails, it can be repeated a maximum of 2 or 3 times. Then check:
- The instructions manual for the burner.
- The section “CHECKING BOILER OPERATION.”
- The electrical connections shown on the diagram next to the control panel.
Once the boiler has started, check that it stops and starts again:
- Adjust the setting on the boiler thermostat.
- Operate the main switch on the control panel.
- Set the room thermostat, timer, or temperature controller.
- Check that the pumps are not blocked and rotate correctly.
- Check that the boiler shuts down completely by operating the main system switch.
If all conditions are correct, restart the appliance, check the combustion (flue gas analysis), fuel rate, and tightness of the gaskets on the
door and smokebox.
8.6 Checking burner operation
- Check the instructions manual for the burner.
- Follow all local regulations and standards with regard to burner maintenance.
8.7 Troubleshooting
The following is a list of the main faults and problems that may occur during boiler operation, specifying possible causes and solutions.
FAULT
THE BOILER IS EASILY SOILED
CAUSE: Burner poorly adjusted SOLUTION: Check the burner adjustment (flue gas analysis)
Flue blocked Clean the flue gas path and the flue
Burner air intake path dirty Clean the burner air intake
THE BOILER DOES NOT REACH THE SET TEMPERATURE
CAUSE: Boiler body dirty SOLUTION: Clean the flue gas path
Boiler/burner combination Check the data and adjustments
Burner flow-rate insufficient Check the burner adjustment
Control thermostat Check correct operation
Check the set temperature
BOILER THERMAL SAFETY SHUTDOWN WITH INDICATOR LIGHT ON THE CONTROL PANEL
CAUSE: Control thermostat SOLUTION: Check correct operation
Check the set temperature
Check the electrical wiring
Check the probe bulbs
Lack of water Check the circuit pressure
Air present Check the vent valve
THE BOILER REACHES THE SET TEMPERATURE, BUT THE CENTRAL HEATING SYSTEM IS COLD
CAUSE: Air present in the system SOLUTION: Vent the system
Pump fault Reset the pump
Minimum thermostat (if featured) Check the set temperature
ODOR OF UNBURNED SUBSTANCES
CAUSE: Flue gas leaking into the environment SOLUTION: Check that the boiler body is clean
Check that the flue is clean
Check the tightness of the boiler and flue
FREQUENT ACTIVATION OF THE SAFETY VALVE
CAUSE: System circuit pressure SOLUTION: Check the fill pressure
Check the system circuit
Check the calibration
Check the set temperature
System expansion vessel Check