Heating/ventilation/air-conditioning Switching the auxiliary heating on and off Switching the auxiliary heating on and off Note: Blower output is infinitely increased or reduced and the roof ventilators are switched on or off in line with the temperature in the passenger compartment.
Press pushbutton (11.4) again. Automatic passenger-compartment temperature regulation is switched off. The indicator lamp in pushbutton (11.4) goes out.
Note: Precondition: electrical system on.
Danger. Risk of poisoning and asphyxiation. The auxiliary heating must not be used in enclosed spaces such as garages or workshops due to the risk of poisoning and asphyxiation. Timer and preselection mode are similarly prohibited.
Danger. Risk of explosion. The auxiliary heating must be switched off at filling stations and fuel dispensing systems due to the risk of explosion.
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Danger. Risk of fire. The auxiliary heating must remain switched off in places where ignitable vapours or dust can accumulate (e.g. in the vicinity of filling stations, fuel depots, or coal, sawdust or grain stores or similar).
Danger. Risk of fire and burns. There is a risk of fires and burns due to the high exhaust temperatures and the hot exhaust pipe for the auxiliary heating. For this reason, do not stop or park the bus over ignitable materials (e.g. grass) when the auxiliary heating is in operation, has recently been in operation or has been operated by the instant heating button/preset timer.
