Riello P 140P/NA Installation, Use And Maintenance Instructions page 48

6. FAULTS / SOLUTIONS
SYMBOL
FAULT
(1)
The burner does not start
The burner does not start
and there is a lockout
The burner starts
but stops at
air damper maximum opening
The burner starts
and then goes into lockout
The burner remains
in pre-purging
After pre-purging phase
1
and safety time
the burner goes into lockout
without pilot firing
Lockout with
flame
Pilot flame to main flame passage
locking
Lockout without symbol indication 40 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
While operating, the burner
blocks
(1) The electrical control box is fitted with a disk that rotates at the start-up cycle and that can be seen through the reset small window. If the burner fails to start or if it
stops due to failure, the symbol displayed in the window indicates the type of interruption.
(2) The fuse is at the back of the control box. There is a spare fuse that can be extracted after breaking the tab fixing it to the panel.
2544500
PROBABLE CAUSE
1 - No electrical power supply.. . . . . . . . . . . . . . . . . . . . . . . . . Close all switches - Check connections
2 - A limit or safety control device is open. . . . . . . . . . . . . . . . Adjust or replace
3 - Control box lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset control box
4 - Control box fuse interrupted . . . . . . . . . . . . . . . . . . . . . . . Replace
5 - Erroneous electrical wiring. . . . . . . . . . . . . . . . . . . . . . . . . Check connections
6 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
7 - The cam contact is not triggered I I . . . . . . . . . . . . . . . . . . Adjust cam I I or replace the servomotor
at the control box terminal boards 11-8 servomotor
8 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
9 - Motor control switch faulty . . . . . . . . . . . . . . . . . . . . . . . . . Replace
10 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
11 - Motor lockout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Release thermal relay when three phase is
12 - The cam contact is not triggered I . . . . . . . . . . . . . . . . . . . Adjust cam I or replace servomotor, control box
terminal boards 9-8
13 - Flame detection circuit failure . . . . . . . . . . . . . . . . . . . . . . . Replace control box
14 - The cam contact is not triggered I I . . . . . . . . . . . . . . . . . . Adjust cam I I or replace servomotor
terminal boards, 10-8 control box
15 - The VR solenoid valve lets little gas flow . . . . . . . . . . . . . . Increase
16 - The VR or VS solenoid valve does not open . . . . . . . . . . . Replace
17 - Ignition electrode is wrongly adjusted . . . . . . . . . . . . . . . . Adjust
18 - Grounded electrode due to broken insulation. . . . . . . . . . . Replace
19 - High voltage cable defective or grounded . . . . . . . . . . . . . Replace
20 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
21 - Ignition transformer defective. . . . . . . . . . . . . . . . . . . . . . . Replace it
22 - Valve or ignition transformer electrical . . . . . . . . . . . . . . . Reconnect
connections not correct
23 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
24 - No gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check
25 - The VR solenoid valve lets little gas flow . . . . . . . . . . . . . . Increase
26 - Weak flame signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check
27 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
28 - Pilot flame off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase gas flow
29 - No fuel in tank; water on tank bottom . . . . . . . . . . . . . . . . . Top up fuel level or suck up water
30 - Inappropriate head and air damper adjustments . . . . . . . . Adjust
31 - Oil solenoid valves fail to open . . . . . . . . . . . . . . . . . . . . . . Check connections, replace coil
32 - Nozzle clogged, dirty or deformed . . . . . . . . . . . . . . . . . . . Replace
33 - Erroneous valves or transformer electrical connections . . . Check
34 - Pump disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Enable
35 - Pump/motor coupling broken . . . . . . . . . . . . . . . . . . . . . . . Replace
36 - Pump suction line connected to return line. . . . . . . . . . . . . Correct connection
37 - Valves up-line from pump closed . . . . . . . . . . . . . . . . . . . . Open
38 - Filters clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
39 - Incorrect motor rotation direction . . . . . . . . . . . . . . . . . . . . Change motor electrical connections
41 - Flame off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See points 28  39 above
42 - No flame signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check sensor
16 GB
SOLUTION
(2)
restored