Faults - Possible Causes - Solutions - Riello RLS 100 Installation, Use And Maintenance Instructions

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Faults - Possible causes - Solutions

Find a list of faults, causes and possible solutions for a set of failures that may occur and result in irregular burner operation or no
functioning at all.
If a burner malfunction is detected, first of all:
• check that the electrical wiring is adequately connected;
• check whether fuel is delivered;
• check that every adjustment parameter is adequately set.
GAS OIL OPERATION
SYMBOL
FAULT
(1)
The burner does not start
The burner does not start and
a function lock-out occurs
The burner starts but stops at
maximum air damper setting
The burner starts and then
P
goes into lock-out
The burner starts and then
goes into lock-out
The burner remains in pre-
purging phase
After pre-purge and the safety
1
time, the burner goes to lock-
out and the flame does not
appear
20033295
Faults - Possible causes - Solutions
PROBABLE CAUSE
A limit or safety control device is open
Control box lock-out
Fan motor blocked
Oil pressure switch intervenes
No electrical power supply
No gas oil
Control box fuse blown
Pump is jammed
Defective motor command control device
Defective control box
Defective electrical motor
The pilot burner does not work
Defective safety solenoid valve
Defective oil modulator
Flame simulation
Photocell short-circuit
2-phase power supply thermal relay trips
Contact 1 of servomotor does not operate control
box terminals 9-8
Air pressure switch adjusted badly
Pressure switch pressure point pipe blocked
Fault in flame detection circuit
Contact III of servomotor does not operate con-
trol box terminals 10-8
The solenoid VP1 allows little gas through
Solenoid valves VP1 or VP2 fail to open
No fuel in tank; water on tank bottom
Inappropriate head and air gate valve adjust-
ments
High voltage cable defective or grounded
High voltage cable deformed by high tempera-
ture
Erroneous valves or transformer electrical con-
nections
Pump unprimed
Pump suction line connected to return line
Filters dirty (on line 1 at the nozzle)
Valves up-line from pump closed
Incorrect motor rotation direction
Gas oil solenoid valves fail to open
Nozzle clogged, dirty, or deformed
The pilot burner does not work
36
GB
SUGGESTED REMEDY
Adjust or replace
Reset
Reset thermal cut-out
Adjust pressure switch or eliminate
overpressure
Close all switches - Check connec-
tions
Check the gas oil supply circuit
Replace
Replace
Replace
Replace
Replace
Check
Replace
Recondition or replace
Replace control box
Replace photocell
Reset thermal cut-out when third
phase is re-connected
Adjust cam I or replace servo-mo-
tor
Adjust
Clean
Replace control box
Adjust cam III or replace servo-
motor
Increase
Renew the coil or rectifier panel
Top up fuel level or suck up water
Adjust
Replace
Replace and protect
Check
Prime
Correct connection
Clean
Open
Change motor electrical connec-
tions
Check the connections and the so-
lenoid valves
Clean or replace
Check