Tuesday, Aug 12, 2008 at 22:27
The statement by Adams 44 previously Para 10 I believe, oops, requires correction.
I have had experience with both the Eberspacher (sold here as Dometic) and Webasto heaters.
With Eberspacher the experience goes back around 8 years.
Both heaters have a thermostat at the air intake and it is the signal from this thermostat that controls the heater.
Air must pass over this thermostat at all times that the heater is on or the heater can not sense the ambient temperature inside the van.
Both heaters go into a “controlled idle” state once the selected air temperature has been reached to enable the thermostat to detect the ambient temperature..
Neither heater blows cold air, both heaters will pass air into the van at the ambient temperature inside the van.
When the thermostat senses that the ambient air temp has fallen below the selected parameter the heater will re-ignite.
There is a very significant operational difference that made me decide to step away from the Eberspacher/Dometic product.
Both heaters will go into fault lockout mode if a problem occurs, a problem such as overheating due to accidental blockage of the air intake, not uncommon when items are stuffed into a storage area near the heater or intake.
The other more common cause for fault lockout is fuel starvation, the tank has run out of fuel.
Fault lockout will occur when the heater has attempted to re-start itself 3 times.
If a Webasto runs out of fuel and goes to fault lockout the owner can override this function to enable fuel priming. (Or to restart after an airway blockage has been cleared.)
Just switch the heater off for 30 seconds.
It may be necessary to repeat this process several times if there is a long fuel line from the tank to the heater.
With the Eberspacher/Dometic product the fault lockout can not be overridden by the owner, it requires a service technician with a laptop computer and the factory software to do this.
So if you are in a remote area and your Dometic heater goes to fault lockout you are up the proverbial creek.
Not the best choice for a van that has been designed to tour in remote areas.
Regards
Bob
AnswerID:
575716
Follow Up By: gottabjoaken - Tuesday, Aug 19, 2008 at 23:34
Tuesday, Aug 19, 2008 at 23:34
I found a note on a
forum with a response to the "lock-out" question:
Heaters after 1998 production and also the new Airtronic 2/4 do not have this "lock out" system.
fwiw
Ken
FollowupID:
850012