Faults / Solutions - Riello FS10 564T30 Montage- Und Bedienungsanleitung

7.

FAULTS / SOLUTIONS

Here below you can find some causes and the possible solutions for some problems that could cause a fail-
ure to start or a bad working of the burner. A fault usually makes the lock-out lamp light which is situated
inside the reset button of the control box (9, fig. 1, page 1).
When lock out lamp lights the burner will attempt to light only after pushing the reset button. After this if the burner
functions correctly, the lock-out can be attributed to a temporary fault.
If however the lock out continues the cause must be determined and the solution found.
BURNER STARTING DIFFICULTIES
Signal Problem
2 blinks Once the pre-pur-
ging phase and sa-
fety
passed, the burner
goes into lockout
without the appea-
rance of the flame
3 blinks The burner does not
switch on, and the
lockout appears
The burner switches
on, but then stops in
lockout
Lockout during pre-
purging phase
4 pulses The burner switches
on, but then stops in
lockout
Lockout when bur-
ner stops
Possible cause
The operation solenoid lets little gas
through
time have
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
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 in-
sufficient air pressure:
Air pressure switch incorrectly adjusted.
Pressure switch pressure test point
pipe blocked
Poorly adjusted head
High pressure in the furnace
Defective motor control contactor
(only three-phase version)
Defective electrical motor
Motor lockout (defective electrical motor) Replace
Flame simulation
Permanent flame in the combustion
head or flame simulation
11
GB
Recommended remedy
Increase
Replace
Increase pressure at governor
Adjust
Replace
Replace
Replace and protect
Replace
Check
Replace
Open
Bleed air
Check connections or replace
coil
Adjust or replace
Adjust or replace
Clean
Adjust
Connect air pressure switch to
fan suction line
Replace
Replace
Replace the control box
Eliminate persistence of flame
or replace control box
2736