13
Function of fan circuit
(for vehicles with air-conditioning
system)
4 fan settings are possible:
is activated by coolant pump thermoswitch
F95.
The fan motors and continued coolant
circulation pump V51 are activated.
The fan motors run at min. output (40%).
is requested by radiator fan thermoswitch F18
or by the air-conditioning control panel.
The fan motors run at 50% output.
is activated by air-conditioning system
pressure switch F129.
The fan motors run at 85 % output.
is activated by radiator fan thermoswitch F54.
The fan motors run at full output.
Fan speeds 1, 2 and 3 are only
activated if the “engine running“
signal is picked up at terminal 61.
The electrical coolant function.....
The continued coolant function is
only activated if the “engine not
running“ signal is picked up at
terminal 61. The continued coolant
function period is limited to 10
minutes.
Fan speed 1......
Fan speed 2......
Fan speed 3......