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SIGNAL
FAULT
No blink
The burner does not
start
4 led
The burner starts
and then goes into lock-
out
2 led
After pre-purge and the
safety time,
the burner goes to lock-
out
and the flame does not
appear
7 led
The burner does not
pass to 2nd stage
Fuel passes to 2nd
stage
but air remains in 1st
Burner stops at transi-
tion
between 1st and 2nd
stage.
Burner repeats starting
cycle
Uneven fuel supply
Internally rusted pump
Noisy pump, unstable
pressure
Pump unprimes after
prolonged pause
Pump leaks light oil
Smoke in flame
- dark Bacharach
- yellow Bacharach
Dirty combustion head
10 led
PROBABLE CAUSE
77 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . Close all switches - Check fuses
78 - Linmit control device TL is open . . . . . . . . . . . . . . . . . . . . . Adjust or replace
79 - Safety control device TS is open. . . . . . . . . . . . . . . . . . . . . Adjust or replace
80 - Control box lock-out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset control box (no sooner than 10 s after the lock-out)
81 - Pump is jammed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
82 - Erroneous electrical connections . . . . . . . . . . . . . . . . . . . . Check connections
83 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
84 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
85 - Photocell short-circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace photocel
86 - Light is entering or flame is simulated. . . . . . . . . . . . . . . . . Eliminate light or replace control box
87 - No fuel in tank; water on tank bottom . . . . . . . . . . . . . . . . . Top up fuel level or suck up water
88 - Inappropriate head and air damper adjustments. . . . . . . . . Adjust
89 - Light oil solenoid valves fail to open (1st stage or safety) . . Check connections; replace coil
90 - 1st stage nozzle clogged, dirty, or deformed. . . . . . . . . . . . Replace
91 - Dirty or poorly adjusted firing electrodes . . . . . . . . . . . . . . . Adjust or clean
92 - Grounded electrode due to broken insulation . . . . . . . . . . . Replace
93 - High voltage cable defective or grounded . . . . . . . . . . . . . . Replace
94 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
95 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . . . . Replace
96 - Erroneous valves or transformer electrical connections . . . Check
97 - Control box defective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
98 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Prime pump and see "Pump unprimes"
99 - Pump/motor coupling broken . . . . . . . . . . . . . . . . . . . . . . . Replace
100- Pump suction line connected to return line . . . . . . . . . . . . . Correct connection
101- Valves up-line from pump closed . . . . . . . . . . . . . . . . . . . . Open
102- Filters dirty: line - pump - nozzle . . . . . . . . . . . . . . . . . . . . . Clean
103- Defective photocell or control box . . . . . . . . . . . . . . . . . . . . Replace photocell or control box
104- Dirty photocell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
105- 1st stage operation of cylinder is faulty . . . . . . . . . . . . . . . . Change the cylinder
106- Motor protection tripped . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset thermal cut-out
107- Defective motor command control device . . . . . . . . . . . . . . Replace
108- Missing phase thermal cut-out trips . . . . . . . . . . . . . . . . . . . . . . . Reset thermal cut-out when third phaseis re-connected
109- Incorrect motor rotation direction . . . . . . . . . . . . . . . . . . . . Change motor electrical connections
110- Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
111 - Poorly adjusted or dirty firing electrodes . . . . . . . . . . . . . . . Adjust
112- Poorly adjusted fan air gate: too much air (1st stage). . . . . Adjust
113- 1st nozzle is too big (pulsation). . . . . . . . . . . . . . . . . . . . . . Reduce 1st nozzle delivery
114- 1st nozzle is too small (flame detachment) . . . . . . . . . . . . . Increase 1st nozzle delivery
115- 1st nozzle dirty, or deformed . . . . . . . . . . . . . . . . . . . . . . . . Replace
116- Inappropriate pump pressure . . . . . . . . . . . . . . . . . . . . . . . Adjust to between 10 and 14 bar
117- 1st stage nozzle unsuited to burner or boiler . . . . . . . . . . . See Nozzle Table, page 12; reduce 1st stage
118- Defective 1st stage nozzle . . . . . . . . . . . . . . . . . . . . . . . . . Replace
119- Control device TR does not close . . . . . . . . . . . . . . . . . . . . Adjust or replace
120- Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
121- 2nd stage sol. valve coil defective. . . . . . . . . . . . . . . . . . . . Replace
122- Piston jammed in valve unit . . . . . . . . . . . . . . . . . . . . . . . . Replace entire unit
123- Low pump pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase
124- 2nd stage operation of cylinder is faulty . . . . . . . . . . . . . . . Change cylinder
125- Nozzle dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Renew nozzle
126- Photocell dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
127- Excess air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reduce
128- Check if cause is in pump . . . . . . . . . . . . . . . . . . . . . . . . . . Feed burner from tank
or fuel supply system
129- Water in tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Suck water from tank bottom with separate pump
130- Air has entered the suction line . . . . . . . . . . . . . . . . . . . . . Tighten connectors
- Depression value too high (higher than 35 cm Hg):
131- Tank/burner height difference too great. . . . . . . . . . . . . . . . Feed burner with loop circuit
132- Piping diameter too small . . . . . . . . . . . . . . . . . . . . . . . . . . Increase
133- Suction filters clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
134- Suction valves closed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Open
135- Paraffin solidified due to low temperature . . . . . . . . . . . . . . Add additive to light oil
136- Return pipe not immersed in fuel . . . . . . . . . . . . . . . . . . . . Bring to same height as suction pipe
137- Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten connectors
138- Leakage from sealing organ . . . . . . . . . . . . . . . . . . . . . . . . Replace pump
139- Not enough air. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate
140- Nozzle worn or dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
141- Nozzle filter clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean or replace
142- Erroneous pump pressure. . . . . . . . . . . . . . . . . . . . . . . . . . Adjust to between 10 - 14 bar
143- Flame stability spirat dirty, loose, or deformed . . . . . . . . . . Clean, tighten in place, or replace
144- Boiler room air vents insufficient . . . . . . . . . . . . . . . . . . . . . Increase
145- Too much air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate
146- Nozzle or filter dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
147- Unsuitable nozzle delivery or angle. . . . . . . . . . . . . . . . . . . See recommended nozzles
148- Loose nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten
149- Impurities on flame stability spiral . . . . . . . . . . . . . . . . . . . . Clean
150- Erroneous head adjustment or not enough air . . . . . . . . . . Adjust; open gate valve
151- Blast tube length unsuited to boiler . . . . . . . . . . . . . . . . . . . Contact boiler manufacturer
152- Connection or internal fault
40
SUGGESTED REMEDY
located near burner
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