ermaf P 40 - Page 22

3 sec.
10 sec.
9 Dealing with faults Page 20
Flow chart P-serie BCU
Error 2+5 “false light” darken burner chamber
pomp turns
230V to: Ignition transformer (audible visible)
Set to “manual burning”
ventilator doesn’t turn
ventilator turns
ventilator turns slowly
pump doesn’t turn (no oil flow/ fan turns lightly)
a) Tension too low b) pump runs heavy c) Capacitor engine defect
a) pump ceased pump coupling broken
Good, stable ignition
Oil valve doesn’t open (no “click”, no oil spray at outlet)
a) cable oil valve loose b) coil valve defect c) oil valve defect
Oil valve opens
Heater burning
a) pump pressure too high/low b) oil return line kinked c) air openings (4) dirty d) burner head dirty e) old, worn defect nozzle f) Oxygen depletion g) object in 60° spray angle
Smells / forms soot
Burns only 5 seconds (LED 4) (no photocell current)
a) flame too small Oxygen depletion b) photocell (tube) dirty c) cable photocell loose d) photocell defect
No/ irregular ignition
a) ignites at the wrong spot b) ignition cable loose c) electrode torn/cracked d) Fuse F2 (3,15A) in BCU defect e) cable ign. transformer loose f) ign. transformer defect
Heater doesn’t burn (no flame at all)
a) (manual) oil valve closed b) oil filter dirty/clogged c) oil pressure too low d) insufficient ignition e) air in the oil lines f) Oxygen depletion g) nozzle dirty h) Water in the oil lines
Set to “ventilate”
ventilator doesn’t turn
a) thermal fuse activated >push reset button on engine b) fuse F1 (8A) defect c) engine cable loose d) engine capacitor defect e) ventilator blocked f) motor defect