6
10
Air blower fault.
Speed lower
than rated
Foreign particles
obstruct spinner move-
ment, or the spinner hits
the air blower cover.
Check the electric wiring.
Check the AB for dirt.
Correct the fault; replace
the air blower if neces-
sary (see section 5.4).
11
Overheating
(heating rate is
too high)
The temperature
sensors heat too rapidly.
1. Check the entire liquid
circuit for any possible
air blocks upstream of
the pump preventing the
coolant to be pumped
through the
heating element.
2. Check coolant
3. Check the pump;
replace
if necessary.
12
Shutdown due to
overvoltage.
Power supply voltage >
16 V
Test voltage at connector
ХS2 on the heater. Test
the battery, the vehicle
voltage regulator, and
power supply wiring.
13
All attempts to
start failed
Failure to ignite
(after two attempts)
Check the fuel line, the
fuel pump, and the air
blower. Check the
exhaust pipe.
Check the combustion
chamber, clean the
Ø2.8 mm opening if
necessary (see 5.7 and
5.2)
14 Pump fault
Short or open circuit
of current-conducting
parts, contaminated
pumping elements.
Check short circuit and
discontinuity of circula-
tion pump wiring; check
the pump; replace if
necessary.
Clean the pumping
elements of the pump.
(section 5.9).
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