Fault - Probable Cause - Suggested Remedy - Riello Burners RS 28 Instrucciones De Instalación, Funcionamiento Y Mantenimiento

SIGNAL FAULT
2 x blinks After pre-purge and
safety time, the burner
goes tolock-out and the
flame does not appear
3 x blinks The burner does not start
and lock-out warning
appears
The burner starts and
then locks out
Lock-out during pre-purg-
ing
4 x blinks The burner starts and
then locks out
Lock out when burner
stops
7 x blinks The burner goes to lock-
out right after flame
appearance
Burner locks out at transi-
tion between 1st and 2nd
stage or between 2nd and
1st stage
During operation, the
burner stops in lock out
10 x blinks The burner does not start
and lock-out warning
appears
The burner goes to lock-
out
No blink The burner does not start 37 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . Close all switches - Check connections
The burner repeats the
starting cycle without lock
out
Ignition with pulsation
The burner does not pass
to 2nd stage
Burner stops with air gate
valve open
PROBABLE CAUSE
1 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
2 - Solenoid valves VR or VS fail to open . . . . . . . . . . . . . . . . Renew the coil or rectifier panel
3 - Gas pressure too low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase pressure at governor
4 - Ignition electrode wrongly adjusted. . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p. 6
5 - Electrode grounded due to brocken insulation . . . . . . . . . . Replace
6 - High voltage cable defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
7 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
8 - Ignition trasformer defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
9 - Erroneous valve or trasformer electrical connections . . . . . Check
10 - Control box defective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
11 - A cock down-line of the gas train is closed . . . . . . . . . . . . . Open
12 - Air in pipework. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bleed air
13 - VS and VR gas valves unconnected or with interrupted coil . . Check connections or replace coil
14 - Air pressure switch in operating position
Air pressure switch inoperative due to
insufficient air pressure:
15 - Air pressure switch adjusted badly . . . . . . . . . . . . . . . . . . . Adjust or replace
16 - Pressure switch pressure point pipe blocked . . . . . . . . . . . Clean
17 - Head wrongly adjusted . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
18 - High negative draft in chamber . . . . . . . . . . . . . . . . . . . . . . . . . Connect air pressure switch to fan suction inlet
19 - Defective capacitor (RS 28 - RS 38 single-phase) . . . . . . . Replace
20 - Defective motor remote control switch (RS 38 - 50 three-phase) Replace
21 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
22 - Motor protection tripped (RS 38 three-phase - RS 50) . . . . . . Reset thermal cut-out when third phase
23 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
24 - Flame remains in combustion head . . . . . . . . . . . . . . . . . . Eliminate persistence of flame
or flame simulation
25 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
26 - Ionisation probe wrongly adjusted. . . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p. 6
27 - Insufficient ionisation (less than 5 µA). . . . . . . . . . . . . . . . . Check probe position
28 - Probe grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Withdraw or replace cable
29 - Burner poorly grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . Check grounding
30 - Phase and neutral wires inverted . . . . . . . . . . . . . . . . . . . . Correct by interventing
31 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
32 - Too much air or too little gas . . . . . . . . . . . . . . . . . . . . . . . . Adjust air and gas
33 - Probe or ionisation cable grounded . . . . . . . . . . . . . . . . . . Replace worn parts
34 - Fault on air pressure switch . . . . . . . . . . . . . . . . . . . . . . . . Replace
35 - Erroneous electrical connections . . . . . . . . . . . . . . . . . . . . Check connections
36 - Control box defective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
38 - A limiter or safety control device is open. . . . . . . . . . . . . . . Adjust or replace
39 - Control box fuses blown . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
40 - Control box lock-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset control box
41 - No gas supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Open the manual valves between meter and train
42 - Mains gas pressure insufficient . . . . . . . . . . . . . . . . . . . . . . Contact your GAS COMPANY
43 - Minimum gas pressure switch fails to close . . . . . . . . . . . . Adjust or replace
44 - Servomotor fails to move to St1 position. . . . . . . . . . . . . . . Replace
45 - Mains gas pressure is near the value to which the . . . . . . . Reduce operating pressure
min. gas pressure switch gas is adjusted. The
repeated drop in pressure which follows valve
opening causes temporary opening of the pressure
switch itself, the valve immediately closes and the
burner comes to a halt. Pressure increases again, the
pressure switch closes again and the firing cycle is
repeated. The sequence repeats endlessly.
46 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see p. 7
47 - Ignition electrode wrongly adjusted. . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p. 6
48 - Poorly adjusted fan air gate: too much air. . . . . . . . . . . . . . Adjust
49 - Output during ignition phase is too high . . . . . . . . . . . . . . . Reduce
50 - Remote control device TR does not close . . . . . . . . . . . . . Adjust oe replace
51 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
52 - Servomotor faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
53 - Sevomotor faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
54 -
19
SUGGESTED REMEDY
Adjust or replace
is re-connected
or replace control box
of minimum gas pressure switch.
Replace gas filter