Light Oil Operation - Riello RLS 70 Installation, Use And Maintenance Instructions

8.1

Light oil operation

Symbol Problem
The burner does not start
The burner does not
come on and the lockout
appears
The burner starts but
stops at maximum air
damper setting
The burner starts and
P
then goes into lockout
The burner starts and
then goes into lockout
The burner remains in
pre-purging phase
Once the pre-purging
and the safety time has
elapsed the burner goes
into lockout without the
1
flame appearing
The flame ignites
regularly but the burner
goes into lock out at the
end of the safety time
Faults - Possible causes - Solutions
Probable cause
Limiter or safety control device open
Control box lockout
Fan motor lockout
No electrical power supply
No light oil
Control box fuse interrupted
Pump is jammed
Faulty motor remote control switch
Defective control box
Faulty electrical motor
Defective safety solenoid valve
Flame simulation
Flame sensor short circuit
Two-phase electrical supply,
thermal relay steps in
The servomotor contact does not intervene
Air pressure switch poorly adjusted
Pressure switch pressure point pipe
blocked
Failure to the flame detection circuit
The servomotor contact III does not intervene Adjust cam or replace servomotor
No fuel in the tank,
or water on the bottom
Bad head and damper adjustments
High voltage cable defective or grounded
High voltage cable deformed by high
temperature
Bad electrical wiring on valves or transformer
Pump unprimed
Pump suction line connected to return line
Soiled filters (nozzle line)
Valves up-line from pump closed
Opposite motor rotation
Light oil solenoid valves do not open
Pilot burner does not work
Defective control box
Ignition electrode incorrectly adjusted
Electrode grounded due to broken insulation
Motor/pump coupling broken
Faulty ignition transformer
Faulty flame sensor or defective control box
Dirty flame sensor
41 GB
Suggested remedy
Adjust or replace
Release
Release the thermal relay
Close all switches - check connections
Check the light oil supply circuit
Replace
Replace
Replace
Replace
Replace
Replace
Replace the control box
Replace flame sensor
Reset the thermal relay at return of the
three phases
Adjust cam or replace servomotor
Adjust it
Clean
Replace control box
Refill with fuel, or remove the water
Adjust
Replace
Replace and protect
Check
Prime it
Correct connection
Clean
Open them
Change electrical wiring to the motor
Check connections and
solenoids
Check
Replace
Adjust it
Replace
Replace
Replace
Replace flame sensor or control box
Clean
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