RIELLO BURNES GAS 3 P/M Manuel D'entretien page 44

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 gate valve setting
P The burner starts and then
locks out
The burner starts and then
locks out
The burner stays in
the pre-purge stage
After pre-purge and safety time,
1
the burner goes to lock-out and
the flame does not appear
The burner goes to lock-out
right after flame appearance
The burner repeats the starting
cycle without lock out
Lock out without symbol indication 45 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
During operation, the burner
stops in lock out
Lock out when burner stops
Ignition with pulsation
(1) The control box 12)(A)p.10 is fitted with a disc rotates during the firing programme, which can be seen through the transparent lock-out reset button. When the
burner does not fire or comes to a half following a fault, the symbol which appears behind the reset button indicates the type of problem.
(2) The fuse is located in the rear part of the control box 12)(A)p.10. A pull-out fuse is also available as a spare part which can be fitted after breaking the tag on the
panel which holds in place.
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 fuse blown . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace (2)
5 - Erroneous electrical connections . . . . . . . . . . . . . . . . . . . . Check connection
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 - Air pressure switch in operating position. . . . . . . . . . . . . . . Adjust or replace
11 - Contact 1 of servomotor does not operate . . . . . . . . . . . . . Adjust cam 1 or replace servomotor
control box terminals 11-8
12 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
13 - Defective capacitor (GAS 3 - 4 P/M) . . . . . . . . . . . . . . . . . . Replace
14 - Defective motor remote control switch (GAS 5 - 6 - 7 P/M). Replace
15 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
16 - Motor protection tripped (GAS 5 - 6 - 7 P/M) . . . . . . . . . . . Reset thermal cut-out when third phase is re-
17 - Contact 2 servomotor does not operate . . . . . . . . . . . . . . . Adjust cam 2 or replace servomotor
control box terminals 9-8
Air pressure switch inoperative due to insufficient air pressure:
18 - Air pressure switch adjusted badly . . . . . . . . . . . . . . . . . . . Adjust or replace
19 - Pressure switch pressure point pipe blocked . . . . . . . . . . . Clean
20 - Head wrongly adjusted . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
21 - Dirty fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
22 - High negative draft in chamber . . . . . . . . . . . . . . . . . . . . . . Ask our technical office
23 - Fault in flame detection circuit. . . . . . . . . . . . . . . . . . . . . . . Replace control box
24 - Contact 3 servomotor does not operate . . . . . . . . . . . . . . . Adjust cam 3 or replace servomotor
control box terminals 10-8
25 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
26 - Solenoid valves VR or VS fail to open . . . . . . . . . . . . . . . . . Renew the coil or rectifier panel
27 - Gas pressure too low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase pressure at governor
28 - Ignition electrode wrongly adjusted. . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p. 16
29 - Electrode grounded due to broken insulation . . . . . . . . . . . Replace
30 - High voltage cable defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
31 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
32 - Ignition trasformer defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
33 - Erroneous valve or trasformer electrical connections . . . . . Repeat connection
34 - Control box defective. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
35 - A cock down-line of the gas train is closed . . . . . . . . . . . . . Open
36 - Air in pipework. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bleed air
37 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
38 - Ionisation probe wrongly adjusted. . . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p.16
39 - Faulty electrical connection for probe . . . . . . . . . . . . . . . . . Repeat connection
40 - Insufficient ionisation (less than 6 µA). . . . . . . . . . . . . . . . . Check probe position
41 - Probe grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Withdraw or replace cable
42 - Max. gas pressure switch operates . . . . . . . . . . . . . . . . . . . Adjust or replace
43 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
44 - Mains gas pressure is near the value to which the . . . . . . . Reduce operating pressure of minimum gas
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 - Probe or ionisation cable grounded . . . . . . . . . . . . . . . . . . Replace worn parts
47 - Fault on air pressure switch . . . . . . . . . . . . . . . . . . . . . . . . Replace
48 - Max. gas pressure switch operates . . . . . . . . . . . . . . . . . . . Adjust or replace
49 - Flame remains in combustion head . . . . . . . . . . . . . . . . . . Eliminate persistence of flame
or flame simulation
50 - Poorly adjusted head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see p.18
51 - Ignition electrode wrongly adjusted. . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p.16
52 - Poorly adjusted fan air gate: too much air . . . . . . . . . . . . . . Adjust
53 - Output during ignition phase is too high . . . . . . . . . . . . . . . Reduce
44
SUGGESTED REMEDY
connected
pressure switch. Replace gas filter.
or replace control box