Bailey Senator Arizona 2004. Charger Fan cutting in and out all night...... Is it normal?

[ncleme]

Is it normal for the fan on the Charger unit (Silver Box under Front Seat) to come on for a few seconds every three or so minutes. Only when hooked up to Mains 240V.. I have had the caravan hooked up for three days and would expect the battery to be charged, but can`t work out why the fan needs to cut in and out, very annoying at night. Only way to stop it is to disconect 240v hook up. Any ideas as to a solution!!! and is the charger acting normally?

 

[WatsonJohnG]

I have read postings that said the same thing
Haven't noticed it much on the California but failing hearing could account for that !!
4 years ago when we had the Oklahoma I fitted an on/off switch in the charger feed

 

[Damian]

Unless the charger is a multi stage charger it will not know when the battery is fully charged and will continue to provide 13.8 v to the battery.The fan is an overheat protection and will cut in and out as the unit reaches a pre set temperature.