59
UK
Trouble
Possible cause
What to do about it
Burner fails to start
or cuts off during
operation
Lack of water
Provide sufficient water supply
Lack of fuel oi
Refill fuel oil
Flow switch fails to switch
Have the flow switch checked
by an expert, replace it, if
necessary
Thermostat wrongly adjusted
Switch on and check
temperature
Thermostat defective
Have an expert replace the
thermostat
Photo cell contaminated or
defective
Have an expert change clean it
Oil firing controller fails to work
Have an expert check the oil
firing controller, if necessary
have it exchanged
Burner does not
ignite, no trouble-free
ignition, burner soots,
flame pulsate
Wrong burner nozzle
Have nozzle replaced by an
expert or have it cleaned
(see11.4.3)
Burner nozzle contaminated
Have nozzle replaced by an
expert or have it cleaned
(see11.4.3)
No ignition spark
Have transformator checked by
an expert
Wrong position of ignition
electrodes; jump spark on
burner nozzle or retarding disk,
no ignition spark
Have an expert adjust the
electrodes (as per special
dimension drawing)
Fuel preheater defective
Have an expert replace the fuel
preheater
Solenoid valve does not open
Have an expert replace the
solenoid valve
Combustion chamber resp.
heating coil contaminated
Have an expert clean the
heating coil (see 10.3)
Heating coil delimed
Conductance of combustion
gases
Wrong burner adjustment
Delime heating coil (see 10.2)
Heat capacity of the
water heater too low
Combustion chamber resp.
heating coil contaminated
Have the heating coil cleaned
by an expert (see 10.3)
Heating coil delmied
Delime heating coil (see 10.2)
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