Section 18: Fault Finding
Page 73
18.3 Riello RDB BLU Fault Finding Chart
Figure 18-3:
Riello RDB BLU Fault Finding
Contaminated
fuel
filters?
Control box
is supplied with heat
demand
Fan runs for
less than
12 seconds
Burner locks
out after
25 seconds
Washing
pressure 1 - 2 bar
Ignition
spark
present
Coil releases
working
pressure?
Nozzle
atomising
the fuel?
Combustion
head set
correctly?
Motor starts
after initialisation
Check time 3.5sec?
A
Check boiler and system
controls
B
Fan motor
or oil
pump seized?
Motor gives
50V AC across
white and
black wire?
Burner
fires when
UV sensor is
covered?
Check oil
supply to oil pump
Are electrodes
OK and
set correctly?
Clean or replace
filters
Nozzle
new?
Adjust
combustion air
setting
Reset
combustion
head
Replace seized
component
Replace
fan
motor
Is the UV sensor
faulty?
Drive
coupling
broken?
Replace or
reset
electrodes
Replace nozzle
Flame goes
out then
relights?
230V to motor across blue and
black wire?
Remove extraneous
light
Replace pump
coupling
Check oil pipe
from pump to nozzle holder
Clear
blockage
Boiler or
flue
blocked?
Approx.
35
Ω
across blue
and black motor
wire?
D
Coil
lead
OK?
Replace UV sensor
Replace
oil
pump
Ignition leads
OK?
Replace
coil
Clean or replace pump and fuel
line filters
If balanced flue:
remove snorkel
and test - now OK?
Coil
resistance
90 to 110
Ω
?
E
Coil
resistance
90 to 110
Ω
?
Replace ignition
leads
After 15 seconds
25-30V DC to coil?
(coil connected)
Is the UV sensor
faulty?
Balanced flue can
recirculate gases causing recycling
Replace
motor
capacitor
Replace
coil
lead
Replace
coil
Replace
oil
pump
Replace UV sensor
Check flue
position and seals
Y
Air set
correctly?
C
Y
N
N
Y
Y
Y
Y
Y
N
Y
Y
N
N
N
N
Y
N
N
Y
N
Y
N
Y
N
Y
N
Y
Y
N
N
Y
Y
N
N
N
N
N
Y
N
N
Y
Y
Y
N
Y
Y
N
Y
N
Y
Y
N
Y
Y
N
N
N
F
Replace control
box
Replace fan
motor and check
control box
Содержание Aerona3 Series
Страница 57: ...Section 13 Flue System and Air Supply Page 57 Figure 13 8 Flue clearances...
Страница 77: ...Section 19 Spare Parts Page 77 Figure 19 4 15 21kW baffles Figure 19 5 21 26kW baffles...
Страница 84: ...Appendix A Page 84 Appendix A...
Страница 85: ...Appendix A Page 85...
Страница 86: ...Appendix A Page 86...
Страница 87: ...Appendix A Page 87...