Faults - Suggested Remedies - Riello RLS 250/M MZ Instructions Pour Installation, Utilisation Et Entretien

FAULTS - SUGGESTED REMEDIES

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
The burner starts and then
P
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 44 - 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 is fitted with a disc rotates during the firing programme, which can been 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. 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 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 - Air pressure switch in operating position. . . . . . . . . . . . . . . Adjust or replace
11 - Contact (locking cam)of servomotor does not operate . . . . Adjust locking cam or replace servomotor
12 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
13 - Defective motor remote control switch . . . . . . . . . . . . . . . . Replace
14 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
15 - Motor protection tripped . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset thermal cut-out
16 - Contact servomotor does not operate. . . . . . . . . . . . . . . . . Adjust cam(max.) or replace servomotor
(Cam-max. opening)
Air pressure switch inoperative due to insufficient 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 - Dirty fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
21 - High negative draft in chamber . . . . . . . . . . . . . . . . . . . . . . .Ask our technical office
22 - Fault in flame detection circuit. . . . . . . . . . . . . . . . . . . . . . . Replace control box
23 - Contact servomotor does not operate. . . . . . . . . . . . . . . . . Adjust cam (minimum) or replace servomotor
(Minimum cam)
24 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
25 - Solenoid valves VR or VS fail to open . . . . . . . . . . . . . . . . Renew the coil or rectifier panel
26 - Gas pressure too low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase pressure at governor
27 - Ignition electrode wrongly adjusted. . . . . . . . . . . . . . . . . . . Adjust
28 - Electrode grounded due to brocken insulation . . . . . . . . . . Replace
29 - High voltage cable defective . . . . . . . . . . . . . . . . . . . . . . . . Replace
30 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
31 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . . . . Replace
32 - Erroneous valve or transformer electrical connections . . . . Repeat connection
33 - Control box defective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
34 - A cock down-line of the gas train is closed . . . . . . . . . . . . . Open
35 - Air in pipework. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bleed air
36 - The solenoid VR allows little gas through . . . . . . . . . . . . . . Increase
37 - Dirty flame sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check, replace flame sensor
38 - Defective connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check, replace flame sensor
39 - Insufficient defection current (min. 70 µA) . . . . . . . . . . . . . Measure current, replace flame sensor
40 - Exhausted, defective flame sensor . . . . . . . . . . . . . . . . . . . Replace
41 - Max. gas pressure switch operates. . . . . . . . . . . . . . . . . . . Adjust or replace
42 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
43 - Mains gas pressure is near the valve 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 endlesly.
45 - Defective flame sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace worn parts
46 - Fault on air pressure switch . . . . . . . . . . . . . . . . . . . . . . . . Replace
47 - Max. gas pressure switch operates. . . . . . . . . . . . . . . . . . . Adjust or replace
48 - Flame remains in combustion head . . . . . . . . . . . . . . . . . . Eliminate persistence of flame
or flame simulation
49 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
50 - Ignition electrode wrongly adjusted. . . . . . . . . . . . . . . . . . . Adjust
51 - Poorly adjusted fan air gate: too much air. . . . . . . . . . . . . . Adjust
52 - Output during ionisation phase is too high . . . . . . . . . . . . . Reduce
52
SUGGESTED REMEDY
pressure switch.
Replace gas filter.
or replace control box