Riello Burners RS 28 Manuel D'entretien page 39

COLOUR
FAULT
(1)
The burner does not start
The disk 2) keeps on rotating
BLUE The burner starts
and then locks out
YELLOW After pre-purge and
safety time,
the burner goes tolock-out
and the ßame does not appear
YELLOW The burner goes to lock-out
right after ßame appearance
The burner repeats
the starting cycle
without lock out
Ignition with pulsation
RED The burner does not pass
GREEN to 2nd stage
Burner locks out at transition
between 1st and 2nd stage or
between 2nd and 1st stage
During operation, the
burner stops in lock out
Lock out when burner stops
Burner stops with air gate valve
open
(1) The control box 1) is equipped with a disk 2) that rotates during the starting phase and is visible from the lower side of control box. When the burner does not start,
or locks out, because of a fault, the color which appears in correspondance with index 3) signals the kind of inconvenience.
PROBABLE CAUSE
1 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . Close all switches - Check connections
2 - A limiter or safety control device is open . . . . . . . . . . . . . . . Adjust or replace
3 - Control box lock-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset control box
4 - Control box fuses blown . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
5 - Erroneous electrical connections . . . . . . . . . . . . . . . . . . . . Check connections
6 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
7 - No gas supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Open the manual valves between meter and train
8 - Mains gas pressure insufÞcient . . . . . . . . . . . . . . . . . . . . . . Contact your GAS COMPANY
9 - Minimum gas pressure switch fails to close . . . . . . . . . . . . Adjust or replace
10 - Servomotor fails to move to St1 position . . . . . . . . . . . . . . . Replace
11 - Defective capacitor (RS 28 - 38 single-phase) . . . . . . . . . . Replace
12 - Defective motor remote control switch (RS 38 - 50 three-phase). Replace
13 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
14 - Motor protection tripped (RS 38 - 50 three-phase). . . . . . . . . Reset thermal cut-out when third phase
15 - Air pressure switch in operating position
16 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
Air pressure switch inoperative due to
insufÞcient air pressure:
17 - Air pressure switch adjusted badly . . . . . . . . . . . . . . . . . . . Adjust or replace
18 - Pressure switch pressure point pipe blocked . . . . . . . . . . . Clean
19 - Head wrongly adjusted . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
20 - High negative draft in chamber . . . . . . . . . . . . . . . . . . . . . . . . . Connect air pressure switch to fan suction inlet
21 - Fault in ßame detection circuit . . . . . . . . . . . . . . . . . . . . . . . Replace control box
22 - VS and VR gas valves unconnected or with interrupted coil . . Check connections or replace coil
23 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
24 - Solenoid valves VR or VS fail to open . . . . . . . . . . . . . . . . . Renew the coil or rectiÞer panel
25 - Gas pressure too low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase pressure at governor
26 - Ignition electrode wrongly adjusted . . . . . . . . . . . . . . . . . . . Adjust, see Þg. (C)p.12
27 - Electrode grounded due to brocken insulation . . . . . . . . . . Replace
28 - High voltage cable defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
29 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
30 - Ignition trasformer defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
31 - Erroneous valve or trasformer electrical connections . . . . . Check
32 - Control box defective. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
33 - A cock down-line of the gas train is closed . . . . . . . . . . . . . Open
34 - Air in pipework. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bleed air
35 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
36 - Ionisation probe wrongly adjusted. . . . . . . . . . . . . . . . . . . . Adjust, see Þg. (C)p.12
37 - Faulty electrical connections for probe . . . . . . . . . . . . . . . . Repeat connection
38 - InsufÞcient ionisation (less than 5 mA). . . . . . . . . . . . . . . . . Check probe position
39 - Probe grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Withdraw or replace cable
40 - Burner poorly grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . Check grounding
41 - Phase and neutral wires inverted . . . . . . . . . . . . . . . . . . . . Correct by interventing
42 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
43 - 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 Þring cycle is
repeated. The sequence repeats endlessly.
44 - Poorly adjusted head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see p.14
45 - Ignition electrode wrongly adjusted . . . . . . . . . . . . . . . . . . . Adjust, see Þg. (C)p.12
46 - Poorly adjusted fan air gate: too much air . . . . . . . . . . . . . . Adjust
47 - Output during ignition phase is too high . . . . . . . . . . . . . . . Reduce
48 - Remote control device TR does not close. . . . . . . . . . . . . . Adjust oe replace
49 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
50 - Servomotor faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
51 - Too much air or too little gas . . . . . . . . . . . . . . . . . . . . . . . . Adjust air and gas
52 - Probe or ionisation cable grounded . . . . . . . . . . . . . . . . . . Replace worn parts
53 - Fault on air pressure switch. . . . . . . . . . . . . . . . . . . . . . . . . Replace
54 - Flame remains in combustion head . . . . . . . . . . . . . . . . . . Eliminate persistence of ßame
or ßame simulation
55 - Sevomotor faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
39
SUGGESTED REMEDY
is re-connected
Adjust or replace
of minimum gas pressure switch.
Replace gas Þlter
or replace control box