Inhaltsverzeichnis
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COLOUR (1)
FAULT
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 to lock-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 to 2nd
GREEN
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 colour which appears in correspondence 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
12 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
13 - Air pressure switch in operating position . . . . . . . . . . . . . . Adjust or replace
14 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
Air pressure switch inoperative due to
insufÞcient 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 - Fault in ßame detection circuit . . . . . . . . . . . . . . . . . . . . . . . Replace control box
19 - VS and VR gas valves unconnected or with interrupted coil . . Check connections or replace coil
20 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
21 - Solenoid valves VR or VS fail to open . . . . . . . . . . . . . . . . . Renew the coil or rectiÞer panel
22 - Gas pressure too low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase pressure at governor
23 - Ignition electrode wrongly adjusted . . . . . . . . . . . . . . . . . . . Adjust, see Þg. (C)p.14
24 - Electrode grounded due to broken insulation . . . . . . . . . . . Replace
25 - High voltage cable defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
26 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
27 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . . . . Replace
28 - Erroneous valve or transformer 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 VR allows little gas through . . . . . . . . . . . . . . Increase
33 - Ionisation probe wrongly adjusted. . . . . . . . . . . . . . . . . . . . Adjust, see Þg. (C)p. 14
34 - Faulty electrical connections for probe . . . . . . . . . . . . . . . . Repeat connection
35 - InsufÞcient ionisation (less than 5 mA). . . . . . . . . . . . . . . . . Check probe position
36 - Probe grounded. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Withdraw or replace cable
37 - Burner poorly grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . Check grounding
38 - Phase and neutral wires inverted . . . . . . . . . . . . . . . . . . . . Correct by inverting
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 Þring cycle is
repeated. The sequence repeats endlessly.
41 - Poorly adjusted head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see page 17
42 - Ignition electrode wrongly adjusted . . . . . . . . . . . . . . . . . . . Adjust, see Þg. (C)p.14
43 - Poorly adjusted fan air gate: too much air . . . . . . . . . . . . . Adjust
44 - Output during ignition phase is too high . . . . . . . . . . . . . . . Reduce
45 - Remote control device TR does not close. . . . . . . . . . . . . . Adjust or replace
46 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
47 - Servomotor faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
48 - Too much air or too little gas . . . . . . . . . . . . . . . . . . . . . . . . Adjust air and gas
49 - Probe or ionisation cable grounded . . . . . . . . . . . . . . . . . . Replace worn parts
50 - Fault on air pressure switch. . . . . . . . . . . . . . . . . . . . . . . . . Replace
51 - Flame remains in combustion head . . . . . . . . . . . . . . . . . . Eliminate persistence of ßame
or ßame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . or replace control box
52 - Servomotor faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
40
SUGGESTED REMEDY
of minimum gas pressure
switch.
Replace gas Þlter
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