Question

We have just bought an Autotrail Arapaho with a Truma S3002 blown air heating system. On the top right side is the control for the blown air system. My question is what does the arrow type symbol on the left side of this control mean?

Answer

I assume that you are referring to the fan control , our ref. 128063, This has an 'off' position in the middle. The left hand position will cause the fan to run continuously (normally used if you wish to circulate air during warm weather). The right hand position, marked 'A' is the automatic position used when the heater is operating and the fan will cut out when the vehicle temperature has reached the thermostat setting.