When I took delivery of my 2002 year Bavaria32 in July 2019 the Diesel heating system was not functioning.
I have just investigated this and found that one wire (Red) to the 4 pin connector on the heater control unit was fractured. I carefully soldered the wire back to its terminal and things started to happen. The green light on the panel lit up when the heater control knob was turned (which I found switches on the heater) The light flashed about five times flowed by 8 pulses of the light.
Being aware of fault codes on equipment, I did a Google search and found that fault code 8 indicated that there was a fault in the heater fan part of the system.
Upon considering this, although the lazarette where the heater is installed is dry, it could be a siezed bearing on the fan motor or maybe an electrical fault in the heater connections. The boat was up for sale for around five years before I made the purchase and laid up in a boat yard and with my knowledge of boats left unused for long periods being 'bad news!' I thought corrosion could be the cause?
The general heater installation looks good and I would think it was done prior to delivery from new.
Any help with this matter would be greatly appreciated please.