Webasto Air Top Evo 40, Руководство по обслуживанию

Страница: 24 / 63

Fault
code Fault (group) Additional information during PC
diagnostic
Troubleshooting
F 15 Not available
F 16 Exhaust temperature exceeded 4F Upper limit of exhaust temperature
exceeded
Check free through-flow of combustion air
and exhaust system, check CO
2
setting, clean
soot from heat exchanger if necessary
F 17
F 18
Exhaust gas temperature
sensor defective
Set-point generator defective
1A Short circuit to ground in exhaust
temperature sensor
9A Open circuit in exhaust temperature
sensor
9B Open circuit or short circuit to +Ub in
set-point generator
Replace exhaust temperature sensor
Check wiring and replace control element if
necessary
F 19 Plausibility of sensors incorrect 93 Plausibility check not passed Check exhaust temperature sensor/Overheat
Temperature Sensor for plausibility and
replace defective sensor
Faults and Error Remedies
5.5 Maintenance display in control element
The maintenance signal is displayed when an operating period of more than 3,000 operating hours has been reached
or the heater is in a restricted operating mode. In case of restricted operation, either the automatic altitude adjustment or
the external room temperature sensor (optional) may be defective. The heater can continue to be operated, however with
a considerable reduction in comfort in some cases. The heater should be inspected by trained professionals as soon as
possible.
The maintenance signal is displayed with equipment with a rotary selector or an Air Top Evo Multi Control (MC04) by
means of flashing of the operating indicator for 60 seconds each time the heater is started. Flashing signal 1 second on,
1 second off.
6.0 Functional Checks
6.1 General Information
This section describes the tests conducted on the heater when it is installed and not installed to verify that it is in working
order.
WARNING:
The heater must not be operated in enclosed areas such as garages and workshops without an emissions
extraction system.
6.2 Required test and measuring equipment
The test and measuring equipment must be calibrated and proof of measuring certificates must be available.
Digital multimeter
Testing of electrical resistance [ohms], electrical continuity
≤
0.1 ohms
Test current < 5 mA
24
Air Top Evo 40 / Air Top Evo 55 Service Manual