BENSON OIL UNIT HEATER
16
8.0 Fault Finding
Burner
fails to
Run
No Power
No
Demand
Check Isolator
Check Fuses
Check
Controls
Burner Lockout
Fan / Limit
Thermostat
Room
Thermostat
Timer
Heat / Ventilate
Switch
On / Off Switch
Burner
starts
Ignition
sequence
but fails to
light and
Lockout
Occurs
Fuel Feed
Incorrect
Check that the
Oil Pressure is
correct
Check that Head
of Gravity is
Sufficient
Check that the
suction Lift is not
too great (two
pipe system)
Check that the
Bypass Plug is
Present
Fuel / Air
Problem
Check Burner
Air Setting
Bleed System
Air in System
Restricted Fuel
Feed
No Spark
Check
Electrode
Possible Fuel
Contamination
Check Valves,
Fuel Feed, Filter
Nozzle for
Blockages or
Restrictions
Check Control
Summary of Contents for OUHA 100
Page 19: ...BENSON OIL UNIT HEATER 19 9 0 Wiring Diagram OUHA 100 OUHA 140 ON OFF 33 65 100...
Page 20: ...BENSON OIL UNIT HEATER 20 Wiring Diagram OUHA 200 OUHA 350 ON OFF 33 65 106...
Page 21: ...BENSON OIL UNIT HEATER 21 Wiring Diagram OUHA 100 OUHA 140 HIGH LOW 33 65 107...
Page 22: ...BENSON OIL UNIT HEATER 22 Wiring Diagram OUHA 200 OUHA 350 HIGH LOW 33 65 108...
Page 23: ...BENSON OIL UNIT HEATER 23 Wiring Diagram OUHC 200 OUHC 350 ON OFF 33 65 191...
Page 28: ...BENSON OIL UNIT HEATER 28 12 0 Heater Dimensions Axial Fan...
Page 29: ...BENSON OIL UNIT HEATER 29 12 1 Heater Dimensions Centrifugal Fan...
