Aux Heater Over-temp?

[JohnR]

OK, just finished patting myself on the back for getting my aux heater working....but I've found that I've still got faults which keep reappearing!

 

Although its working, I'm getting:

 

01410 - Heater Over-Temp

06-00 - Signal too High

 

Question is, is this temp sensor or over temp sensor, and is it likely to be the switch knackered or the heater in need of a decoke? Sounds as if I'm gonna have to drop the unit again and do the job properly on the bench. Anyone know the p/n's for both the switches and the cost?

 

Thanks

John

[JohnR]

Bump....aux heater is working well, but it still seems to be generating this fault code! I'm tempted to ignore it but... it don't seem right somehow! Edited November 9, 2006 by mumof4

[Jeff115]

Hi John,

Did you disturb the coolant circuit / lose water / add air during your work on the booster heater?

Although its working, I'm getting:

 

01410 - Heater Over-Temp

06-00 - Signal too High

 

Question is, is this temp sensor or over temp sensor, and is it likely to be the switch knackered or the heater in need of a decoke? Sounds as if I'm gonna have to drop the unit again and do the job properly on the bench. Anyone know the p/n's for both the switches and the cost?

 

Thanks

John

 

Bump....aux heater is working well, but it still seems to be generating this fault code! I'm tempted to ignore it but... it don't seem right somehow!

If so you may have to bleed the coolant, incl. the additional pipes to the booster, as the level may be low or air may have entered and air locked at the booster.

Remeber to bleed the coolant with the front of the car raised so that any air at the booster end of the circuit may rise etc.

If not then you may have to dismantle and decoke - was covered last year, from memory - try a search.

Regards,

Jeff.

[marinabrid]

the sensors inside can be obtained from eberspacher dealers but they are very expensive something like arounf

[JohnR]

the sensors inside can be obtained from eberspacher dealers but they are very expensive something like arounf

[Guest gooner52]

hi john

 

as some say

 

if its not broke dont try to fix it ;) :D

 

j

[JohnR]

hi john

 

as some say

 

if its not broke dont try to fix it :16: ;)

 

j

 

 

Right....I'll just wait for the carpet to catch fire ;-)

[Guest gooner52]

;) ;) :16: :16:

[Jeff115]

I would not ignore the recurring booster heater overheated fault code.

 

If you did not disturb the coolant circuit then you may disconnected the overheating sensor or broken the red wires ?? on re-assembly of the booster thus the o/c signal.

 

If you do suspect an overheating sensor malfunction (though I don't understand why?) then you can check it by measuring the resistance against temperature - ohms should drop with temperature up to 120 degrees. You can test the coolant temp sender (blue wires) in the same way.

 

J.

[JohnR]

I would not ignore the recurring booster heater overheated fault code.

 

If you did not disturb the coolant circuit then you may disconnected the overheating sensor or broken the red wires ?? on re-assembly of the booster thus the o/c signal.

 

If you do suspect an overheating sensor malfunction (though I don't understand why?) then you can check it by measuring the resistance against temperature - ohms should drop with temperature up to 120 degrees. You can test the coolant temp sender (blue wires) in the same way.

 

J.

 

Hi Jeff,

 

I did the glowplug job in the dark with a lead lamp and couldn't see too well. I didn't break the cooling circuit so would not expect an air-lock. Its either a duff sensor or bad connection as you say. When I get a chance (preferably in daylight!) I will clamp off the pipes and get the unit on the bench to have a proper go at it. In the meantime, it continues to work so I'm not in a great hurry. I suspect that the unit would shut down completely if both temp sensors went o/c or indicated an over-temp.

 

John