WarmFlow Utility U70HE - Combi Fault Finding (Domestic Hot Water)

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10.0 Burner Fault Finding
10.1 Riello RDB
OK
YES YES YES
NO NO NO
YES
NO
NO NONO
NONONONONO
YESYES YES
Burner
Motor Runs
Lock Out
within
1 second
Lock Out after
12 second
purge
Ignition
Spark Proved
Pump
Produces
Pressure
Nozzle
Atomising Fuel
Combustion
Air Set
Correct
Combustion
Head Set
Correct
Check
L & N to
Control Box
Motor or
Pump Seized
Repair/Replace
Motor/Pump
Check and Set
the Electrodes
Washing
Pressure
1-2 Bar
Solenoid
Operating
Raise Pressure
Replace
Nozzle
Flame Off
and Re-Lights
Check
Boiler Controls
Replace Motor
Capacitor
Replace the
Control Box
Drive Coupling
Broken
Replace the
Coil and/or
Stem Valve
Contaminated
Fuel Filter
Boiler or Flue
Blocked
Repair or
Replace Oil
Pump
Motor gives
50 Volts to
White Wire
Coil of
Solenoid
Functional
Photo Cell
Functional
Replace
Control Box
If B/F
application
remove burner
snorkel tube
and retest
Replace
Burner Motor
Replace
Solenoid Coil
Replace
Photo Cell
Reset B/F Flue
or Reposition
YES NO YES YES YES YES YES
NO NO NO