Kärcher SB MB, User Manual

Page: 72 / 424

72 English
Burner malfunctions with oil-fired devices
1
Exhaust gas thermostat release button
2
Unlocking button for automatic oil firing unit
3
Burner controller electrical box
Burner malfunctions with gas-fired devices
Malfunctions on the gas burner may only be repaired by
authorised specialist personnel of the burner manufac-
turer.
Coin slot malfunctions
Malfunction Possible cause Rectification By whom
Oil firing malfunction (au-
tomatic oil firing unit) in
the electrical box of the
burner controller was trig-
gered) No ignition spark present (visible
through the sight glass in the burner
cover) Check electrode setting, ignition transformer and ignition cable. Clean electrodes,
replace defective parts. Then press the release button of the automatic oil firing
unit. Customer Service
Sight glass for flame monitoring is dirty Clean the sight glass for flame monitoring (see section "Maintenance work"). Then
press the release button of the automatic oil firing unit.
Operator
Light sensor for flame monitoring is not
in holder or defective Reattach or replace the light sensor. Then press the release button of the automat-
ic oil firing unit. Operator, Customer
Service
Fuel oil level too low Refill the fuel tank. Then press the release button of the automatic oil firing unit. Operator
No flame due to a shortage of fuel Clean the fuel filter on the fuel pump. Then press the release button of the auto-
matic oil firing unit. Operator
Clean the fuel nozzle and replace if necessary. Then press the release button of
the automatic oil firing unit. Operator
Check the fuel solenoid valve, the fuel pump and the coupling. Customer Service
No flame due to a shortage of air Check the collar on the blower for damage and tight fit of the straps. Then press
the release button of the automatic oil firing unit. Operator
The blower is defective, replace it. Then press the release button of the automatic
oil firing unit. Customer Service
Strong smoke develop-
ment during start-up and
operation Ignition electrode lies in the fuel jet Check and correct the electrode setting. Operator, Customer
Service
Fuel pressure incorrectly set (see sec-
tion "Technical data") Check the fuel pressure, set it again if necessary. Customer Service
Heating coil heavily sooted Dismantle the boiler and clean the heating coil. Customer Service
Exhaust gas thermostat
(S5) was triggered Washing water circuit is calcified Check the water treatment, descale the hot water circuit. Then press the exhaust
gas thermostat release button. Customer Service
Heating coil heavily sooted Dismantle the boiler and clean the heating coil. Then press the exhaust gas ther-
mostat release button. Customer Service
Burner is incorrectly set Correct the burner setting. Then press the exhaust gas thermostat release button. Customer Service
Malfunction Possible cause Rectification By whom
All coin acceptors reject
all coins. Main switch switched off. Turn the main switch to "1". Operator
Time or operating times incorrectly set.
Night-time operation lock active. Check the settings at the controller. Operator
Water shortage Check the water supply. Operator
The motor circuit breaker of the high-
pressure pump has triggered. Reset the motor circuit breaker. Search for the cause if this occurs repeatedly. Operator
A single coin acceptor re-
jects all coins. Coin acceptor dirty. Clean the coin slot (see section "Maintenance work"). Operator
Overcurrent at the high-pressure
pump. Acknowledge the error at the controller. Operator