Faults - Possible causes - Solutions
Tab. P
The burner does not
pass to 2nd stage
43 - Control device TR does not close ....................... Adjust or replace
44 - Defective control box........................................... Replace
45 - 2nd stage sol. valve coil defective....................... Replace
46 - Piston jammed in valve unit................................. Replace entire unit
Fuel passes to 2nd
stage but air remains
in 1st
47 - Low pump pressure............................................. Increase
48 - 2nd stage operation of cylinder is faulty .............. Change cylinder
Burner stops at transi-
tion between 1st and
2nd stage.
Burner repeats start-
ing cycle.
49 - Nozzle dirty.......................................................... Renew nozzle
50 - Photocell dirty...................................................... Clean
51 - Excess air............................................................ Reduce
Uneven fuel supply 52 - Check if cause is in pump from tank or fuel supply
system
Feed burner located near burner
Internally rusted
pump
53 - Water in tank ....................................................... Suck water from tank bottom with separate
pump
Noisy pump, unsta-
ble pressure
54 - Air has entered the suction line ........................... Tighten connectors
- Depression value too high
(higher than 35 cm Hg):
55 - Tank/burner height difference too great .............. Feed burner with loop circuit
56 - Piping diameter too small .................................... Increase
57 - Suction filters clogged ......................................... Clean
58 - Suction valves closed.......................................... Open
59 - Paraffin solidified due to low temperature ........... Add additive to fuel
Pump unprimes after
prolonged pause
60 - Return pipe not immersed in fuel ........................ Bring to same height as suction pipe
61 - Air enters suction piping ...................................... Tighten connectors
Pump leaks fuel 62 - Leakage from sealing organ................................ Replace pump
Smoke in flame
- dark Bacharach
- yellow Bacharach
63 - Not enough air..................................................... Adjust head and fan air damper, see pag. 16
and pag. 26
64 - Nozzle worn or dirty............................................. Replace
65 - Nozzle filter clogged ............................................ Clean or replace
66 - Erroneous pump pressure................................... Adjust to between 10 - 14 bar
67 - Flame stability disc dirty, loose, or deformed ...... Clean, tighten in place, or replace
68 - Boiler room air vents insufficient ......................... Increase
69 - Too much air ....................................................... Adjust head and fan air damper, see pag. 16
and pag. 26
Dirty combustion
head
70 - Nozzle or filter dirty.............................................. Replace
71 - Unsuitable nozzle delivery or angle..................... See recommended nozzles, pag. 17
72 - Loose nozzle ....................................................... Tighten
73 - Impurities on flame stability spiral ....................... Clean
74 - Erroneous head adjustment or not enough air .... Adjust, see pag. 16 and pag. 26; open gate
valve
75 - Blast tube length unsuited to boiler ..................... Contact boiler manufacturer
10 pulses
76 - Connection or internal fault .................................
77 - Presence of electromagnetic disturbance ........... Use the radio disturbance protection kit)
SIGNAL FAULT POSSIBLE CAUSE SOLUTION
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