Faults/Suggested Remedies - Riello RS 190/M Instructions Pour Installation, Utilisation Et Entretien

FAULTS/SUGGESTED REMEDIES

The control box supplied performs a diagnostic role by means of which it is possible to easily identify the possible causes of any malfunctions (signal:
RED LED).
In order to use this function, it is necessary to wait at least ten seconds from the moment the control box is put in safety mode and press the lock-out reset
button for a minimum of three seconds.
Once the button has been released, the RED LED will start to flash, as illustrated in the diagram below.
RED LED on
wait at least 10 secs
The pulses of the LED constitute a signal spaced by approximately 3 seconds.
The number of pulses will provide the information on the possible faults, according to the table below.
Signal
Once the pre-purging phase
2 blinks
and safety time have passed,
the burner goes into lockout
without the appearance of the
flame
The burner does not switch
3 blinks
on, and the lockout appears
The burner switches on, but
then stops in lockout
Lockout during pre-purging
phase
The burner switches on, but
4 blinks
then stops in lockout
Lockout when burner stops
The burner switches on, but
6 blinks
then stops in lockout
The burner goes into lockout
7 blinks
immediately following the
appearance of the flame
Burner locks out when shift-
ing from minimum to maxi-
mum output and vice versa
Burner goes into lockout dur-
ing operation
The burner does not switch
10 blinks
on, and the lockout appears
The burner goes into lockout
2916346
Press button
for > 3 secs
Problem
1 - The operation solenoid lets little gas through . . . . . . . . . Increase
2 - One of the two solenoid valves does not open. . . . . . . . Replace
3 - Gas pressure too low . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase pressure at governor
4 - Ignition electrode incorrectly adjusted. . . . . . . . . . . . . . . Adjust, see fig. (C) page 14
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 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . . Replace
9 - Incorrect valve or transformer electrical wiring . . . . . . . . Check
10 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
11 - A closed valve upline the gas train . . . . . . . . . . . . . . . . . Open
12 - Air in pipework. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bleed air
13 - 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 incorrectly adjusted. . . . . . . . . . . . . . Adjust or replace
16 - Pressure switch pressure test point pipe blocked . . . . . . Clean
17 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
18 - High pressure in the furnace . . . . . . . . . . . . . . . . . . . . . . Connect air pressure switch to fan suction line
19 - Defective motor control contactor . . . . . . . . . . . . . . . . . .
(only three-phase version)
20 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . Replace
21 - Motor lockout (defective electrical motor) . . . . . . . . . . . . Replace
22 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace the control box
23 - Permanent flame in the combustion head or . . . . . . . . .
flame simulation
24 - Defective or incorrectly adjusted servomotor . . . . . . . . . Adjust or replace
25 - The operation solenoid lets little gas through . . . . . . . . . Increase
26 - Ionisation probe incorrectly adjusted. . . . . . . . . . . . . . . . Adjust, see fig. (C) page 14
27 - Insufficient ionisation (less than 5 A). . . . . . . . . . . . . . . . Check probe position
28 - Earth probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Withdraw or replace cable
29 - Burner poorly grounded . . . . . . . . . . . . . . . . . . . . . . . . . Check grounding
30 - Phase and neutral connections inverted . . . . . . . . . . . . . Invert them
31 - Defective flame detection circuit . . . . . . . . . . . . . . . . . . . Replace the control box
32 - Too much air or too little gas . . . . . . . . . . . . . . . . . . . . . . Adjust air and gas
33 - Probe or ionisation cable grounded . . . . . . . . . . . . . . . . Replace worn parts
34 - Incorrect electrical wiring. . . . . . . . . . . . . . . . . . . . . . . . . Check
35 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
36 - Presence of electromagnetic disturbances in . . . . . . . . .
the thermostat lines
37 - Presence of electromagnetic disturbance . . . . . . . . . . . . Use the radio disturbance protection kit
Signal
Possible cause
36
Interval
3 secs Signal
Recommended remedy
Replace
Eliminate persistence of flame or replace control box
Filter or eliminate