Riello PRESS 450 T/N Installation, Use And Maintenance Instructions page 32

7 x blinks Flame loss
Burner repeats starting
cycle.
Insufficient fuel supply
Pump rusty on the inside
Noisy pump, unstable
pressure
Pump unprimes after pro-
longed pause
The pump is losing light oil Leak from sealing organ
Flame with smoke
- Dark Bacharach
- yellow Bacharach
Dirty combustion head
10 blinks The burner does not start
and the lockout appears
20184179
Faults - Possible causes - Solutions
Poorly adjusted head
The ignition electrodes are
Fan air damper badly adjusted: Adjust
1st nozzle is too big (pulsa-
1st nozzle too small (flame
1st nozzle is dirty or deformed
Inadequate pump pressure
1st nozzle not suitable for the
1st stage nozzle defective
Dirty flame sensor
Excess air
Check whether the cause lies in Supply fuel to the burner from a tank near the
Water in the tank
Air entering the suction pipe
Excessive difference of level
Piping diameter too small
Suction filters dirty
Suction valves closed
The paraffin solidifies due to the Put additive in the light oil
Return pipeline not immersed in Bring it to the same height as the suction line
Air in the suction line
Little air
Nozzle dirty or worn
Nozzle filter clogged
Incorrect pump pressure
Flame stabiliser disk dirty, loose Clean, tighten or replace
Insufficient boiler room ventila- Increase
Excessive air
Nozzle or filter dirty
Unsuitable nozzle delivery or
Loose nozzle
Impurities on flame holder
Incorrect head adjustment, or
Blast tube length not suitable
Internal or connection error
Presence of electromagnetic
interference radio interference
30 GB
Adjust
Adjust them
Reduce the flow rate of the 1st nozzle
Increase the flow rate of the 1st nozzle
Replace
Adjust it: between 10 - 14 bar
See Nozzles table, reduce the 1st stage nozzle
Replace
Clean
Reduce
Remove the water from the bottom of the tank with
Tighten the couplings
Feed burner with a loop circuit
Increase
Clean
Open them
Tighten the couplings
Replace the pump
Adjust the fan head and damper
Replace
Clean or replace
Adjust between 10 - 14 bar
Adjust the fan head and damper
Replace
See recommended nozzles
Tighten it
Clean
Adjust it, open the damper
Contact the boiler manufacturer
Use the protection kit
Tab. P