Ambirad ARO Series Installation And Operating Manual - Page 12
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Figure 11
Trouble shooting checklist
Symptoms
Burner will not start
Ensure burner lockout has been reset.
Burner pre-purges and stops
Burner does not spark during cycle and
stops
Burner does not ignite
Burner ignites and then stops
10
Priming and adjustment of the pump (Fig.10).
1. Inlet
2. Return
3. Bleed and pressure gauge port
4. Vacuum gauge port
5. Pressure adjustment
6. Nozzle outlet
Fault check
Mains switch not on.
Blown fuse.
Timer/thermostats not made.
Fault in control box or fan motor.
Fault in control box
Photo cell. Seeing the light or faulty.
Transformer.
Fault in control box.
Dirty ignition electrodes or incorrect setting.
Fault ignition transformer.
Blocked nozzle.
oil solenoid failure.
Oil pressure too low/Check oil supply.
Blocked oil filter.
Excessive combustion air for nozzle
capacity/check air setting
Fault in control box.
Faulty nozzle.
Photo-resistor does not 'see' flame.
Excessive combustion air for nozzle capacity.
Fault in control box.
Oil pressure too low.
Blocked oil filter.