Eberspacher D4/5 op

Fourth switch from the right in the line of switches under the perspex cover on our boat...so try it but give each position a few minutes because as I said nothing happens instantly.
I hope this works because the heat diverter valve, I understand, is hiddeen away in the paneling above the wardrobe in the rear cabin of the SC35 and that is a bit of a sod to get at.
 
lisilou, as i just found on my sc, the connection hose from the heater to the outlet was slipped off due to be too short. you will find it above your head when entering the engine bay. mine was away about two inches ans just very little amount of warm air came out while all the other outlets had hot temperatures.
 
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