Faults - Probable Causes - Solutions - Riello RS 55/M BLU Instrucciones De Instalación, Uso Y Mantenimiento

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Faults - Probable causes - Solutions

The control box has a self-diagnostic system, which easily allows
identifying the operating faults (signal: RED LED).
To use this function, wait at least ten seconds from the safety lock
out, and then press the reset button for a minimum of 3 seconds.
RED LED on
wait at least 10 seconds
The pulses of the LED constitute a signal spaced by approxi-
mately 3 seconds.
The number of pulses will provide the information on the possible
faults, according to .
Signal Problem
2 blinks Once the pre-purging
phase and safety time
have passed, the burn-
er goes into lockout
without the appearance
of the flame
3 blinks The burner does not
switch on, and the lock-
out appears
The burner switches on,
but then stops in lockout
Lockout
purging phase
4 pulses The burner switches on,
but then stops in lockout
Lockout when burner
stops
6 blinks The burner switches on,
but then stops in lockout
Faults - Probable causes - Solutions
Press button for
> 3 seconds
Possible cause
The operation solenoid lets little gas through
One of the two solenoid valves does not open.
Gas pressure too low
Ignition electrode incorrectly adjusted
Electrode grounded due to broken insulation
High voltage cable defective
High voltage cable deformed by high temperature Replace and protect
Ignition transformer defective
Incorrect valve or transformer electrical wiring
Defective control box
A closed valve upline the gas train
Air in pipework
Gas valves unconnected or with interrupted coil
Air pressure switch in operating position
- Air pressure switch inoperative due to insufficient
air pressure:
Air pressure switch incorrectly adjusted.
Pressure switch pressure test point pipe blocked Clean
Poorly adjusted head
High pressure in the furnace
during pre- Defective motor control contactor
(only three-phase version)
Defective electrical motor
Motor lockout (defective electrical motor)
Flame simulation
Permanent flame in the combustion head or flame
simulation
Defective or incorrectly adjusted servomotor
After releasing the button, the RED LED starts flashing as shown
in the diagram below.
signal
31 GB
Interval signal
3 seconds
Recommended remedy
Increase
Replace
Increase pressure at governor
Adjust it
Replace
Replace
Replace
Check
Replace
Open
Bleed air
Check connections or replace coil
Adjust or replace
Adjust or replace
Adjust
Connect air pressure switch to fan
suction line
Replace
Replace
Replace
Replace the control box
Eliminate persistence of flame or
replace control box
Adjust or replace
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