Riello RS 28/1 Manuel D'entretien page 37

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 flame does not appear
YELLOW The burner goes to lock-out
right after flame appearance
The burner repeats
the starting cycle
without lock out
Ignition with pulsation
RED During operation, the
GREEN burner stops in lock out
Lock out when burner stops
(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 insufficient . . . . . . . . . . . . . . . . . . . . . Contact your GAS COMPANY
9 - Minimum gas pressure switch fails to close . . . . . . . . . . . . Adjust or replace
10 - Defective capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
11 - Defective electrical motor. . . . . . . . . . . . . . . . . . . . . . . . . . Replace
12 - Air pressure switch in operating position
13 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
Air pressure switch inoperative due to
insufficient air pressure:
14 - Air pressure switch adjusted badly . . . . . . . . . . . . . . . . . . Adjust or replace
15 - Pressure switch pressure point pipe blocked. . . . . . . . . . . Clean
16 - Head wrongly adjusted . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
17 - High negative draft in chamber . . . . . . . . . . . . . . . . . . . . . . . . . . Connect air pressure switch to fan suction inlet
18 - Fault in flame detection circuit . . . . . . . . . . . . . . . . . . . . . . Replace control box
19 - VS and VR1 gas valves unconnected or with interrupted coil . Check connections or replace coil
20 - The solenoid VR1 allows little gas through . . . . . . . . . . . . Increase
21 - Solenoid valves VR or VS fail to open . . . . . . . . . . . . . . . . Renew the coil or rectifier panel
22 - Gas pressure too low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase pressure at governor
23 - Ignition electrode wrongly adjusted . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p.12
24 - Electrode grounded due to brocken insulation. . . . . . . . . . Replace
25 - High voltage cable defective . . . . . . . . . . . . . . . . . . . . . . . Replace
26 - High voltage cable deformed by high temperature . . . . . . Replace and protect
27 - Ignition trasformer defective. . . . . . . . . . . . . . . . . . . . . . . . Replace
28 - Erroneous valve or trasformer electrical connections . . . . Check
29 - Control box defective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
30 - A cock down-line of the gas train is closed . . . . . . . . . . . . Open
31 - Air in pipework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bleed air
32 - The solenoid VR1 allows little gas through . . . . . . . . . . . . Increase
33 - Ionisation probe wrongly adjusted . . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p.12
34 - Faulty electrical connections for probe . . . . . . . . . . . . . . . Repeat connection
35 - Insufficient ionisation (less than 5 µA) . . . . . . . . . . . . . . . . Check probe position
36 - Probe grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Withdraw or replace cable
37 - Burner poorly grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . Check grounding
38 - Phase and neutral wires inverted . . . . . . . . . . . . . . . . . . . Correct by interventing
39 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
40 - 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.
41 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see p.14
42 - Ignition electrode wrongly adjusted . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p.12
43 - Poorly adjusted fan air gate: too much air . . . . . . . . . . . . . Adjust
44 - Output during ignition phase is too high . . . . . . . . . . . . . . Reduce
45 - Probe or ionisation cable grounded . . . . . . . . . . . . . . . . . Replace worn parts
46 - Fault on air pressure switch . . . . . . . . . . . . . . . . . . . . . . . . Replace
47 - Flame remains in combustion head . . . . . . . . . . . . . . . . . . Eliminate persistence of flame
or flame simulation
37
SUGGESTED REMEDY
Adjust or replace
of minimum gas pressure switch.
Replace gas filter
or replace control box