4-step switch to 3-step fan
Universal
4-step switch to 3-step fan
Connection:
Connection to 5.
7kw heating package:
B - Plus = 12V circuit - From the battery / ignition voltageL - Low speed - Yellow cable from the heating packageM - Medium speed - Orange cable from the heating packageH - High speed - Red cable from the heating packageC - This terminal is activated when any of the 3 fan stages is activated.
Then there is +12V on this pin.
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Connection:
Connection to 5.7kw heating package:
B - Plus = 12V circuit - From the battery / ignition voltage
L - Low speed - Yellow cable from the heating package
M - Medium speed - Orange cable from the heating package
H - High speed - Red cable from the heating package
C - This terminal is activated when any of the 3 fan stages is activated. Then there is +12V on this pin. (used to start AC/turn on indicator light)
NOTE
A resistor is used to control fan speed unless the fan / fan motor has this built in.
The resistor gets hot and should be mounted in the fan duct for cooling.
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