Fault - Probable Cause - Suggested Remedy - Riello RS 34 MZ Instrucciones De Instalación, Uso Y Mantenimiento

SIGNAL FAULT
2x blinks After pre-purge and safety
time, the burner locks out
and the flame does not
appear
3x blinks The burner does not start
and lockout warning
appears
The burner starts and
then locks out
Lockout during pre-purg-
ing
4x blinks The burner starts and
then locks out
Lock out when burner
stops
7x 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 locks out
10x blinks The burner does not start
and lockout warning
appears
The burner locks out
No The burner does not start 37 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . Close all switches - Check connections
blink
The burner repeats the
starting cycle without lock-
out
Firing with pulsation
The burner does not pass
to 2nd stage
Burner stops with air
damper open
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PROBABLE CAUSE
1 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
2 - Solenoid valves VR or VS fail to open . . . . . . . . . . . . . . . . Replace coil or rectifier panel
3 - Gas pressure too low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase pressure at governor
4 - Firing electrode wrongly adjusted . . . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p. 6
5 - Electrode grounded due to broken insulation . . . . . . . . . . . Replace
6 - High voltage cable defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
7 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
8 - Firing transformer defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
9 - Erroneous valve or transformer electrical connections . . . . Check
10 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. . . . . . . . . . . . . . . Adjust or replace
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 depression in the furnace. . . . . . . . . . . . . . . . . . . . . . . . . . . Connect air pressure switch to fan suction line
19 - Defective capacitor (RS 34 - 44 single-phase) . . . . . . . . . . Replace
20 - Defective motor remote control switch (RS 44 three-phase). . . . Replace
21 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
22 - Motor lockout (RS 44 three-phase) . . . . . . . . . . . . . . . . . . . . Reset thermal cut-out when third phaseis
23 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
24 - Flame remains in combustion head . . . . . . . . . . . . . . . . . . Eliminate persistence of flame
or flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . or replace control box
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 mA) . . . . . . . . . . . . . . . . Check probe position
28 - Probe grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Withdraw or replace cable
29 - Burner poorly grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . Check grounding
30 - Phase and neutral wires inverted . . . . . . . . . . . . . . . . . . . . Correct by intervening
31 - Flame detection circuit failure . . . . . . . . . . . . . . . . . . . . . . Replace control box
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 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
38 - A limiter or safety remote control is open . . . . . . . . . . . . . . Adjust or replace
39 - Control box fuses blown . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
40 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
41 - No gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Open the manual valves between meter and
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 . . . . . . . . . . . . . . . . . Reduce operating pressure
on which the min. gas pressure switch gas is adjusted.
The sudden drop of pressure switch operation 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 - Firing electrode wrongly adjusted . . . . . . . . . . . . . . . . . . . . Adjust, see fig. (C)p. 6
48 - Poorly adjusted fan air damper: too much air . . . . . . . . . . . Adjust
49 - Output during firing phase is too high . . . . . . . . . . . . . . . . . Reduce
50 - Remote control device TR does not close . . . . . . . . . . . . . Adjust or replace
51 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
52 - Servomotor faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
53 - Servomotor faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
17
SUGGESTED REMEDY
reconnected
train
min. gas
Replace gas filter cartridge.