Dometic 8505 fridge interior light (1 Viewer)

Boardboi

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Jun 28, 2021
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Hi all,my interior LED fridge light doesn't illuminate with the door open. I fitted a new light assembly & cleaned the electrical connector but still no joy. Any ideas ?
Thanks
 

ManTheVan

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You have to program the circuit board to recognise the reed switch in the door. I don’t have the details with me but google it.
 
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Boardboi

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Jun 28, 2021
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Thanks. I wasn't aware it had a reed switch. I assumed that the microswitch in the light unit was operated by the door locking arm. I will have a Google.

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Feb 25, 2018
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enough to know i shouldnt touch things i know nothing about ....
how do you know it isnt coming on when the door is closed ? ....... or if you do get it sorted, how can you tell the light goes off when you close the door ?... :unsure: :unsure: :unsure:


:LOL::LOL::LOL::LOL::LOL::LOL::LOL::LOL:
 
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Boardboi

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Jun 28, 2021
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Edinburgh, UK
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Van conversion
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2000
Still non the wiser. This fridge doesn't have a reed switch. I'm not getting 12v at the light connector. Is there a separate fuse or possibly a bad contact on the PCB ?
 

Lenny HB

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Still non the wiser. This fridge doesn't have a reed switch. I'm not getting 12v at the light connector. Is there a separate fuse or possibly a bad contact on the PCB ?
No reed switch just a microswitch operated by the SS lever, where the power goes onto the board it's about 10v so I think it's controlled by a processor on the main PCB. I checked it when I was looking for power for my internal fan.
 
Oct 10, 2018
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Boardboi If you do not have it ,there is a service manual , including wiring , For the Dometic 8 series fridge in the Manuals for Motorhome stuff section of Resources (in the menu ) that could be useful in checking for the fault and the lights connections.
 
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Boardboi

Free Member
Jun 28, 2021
13
5
Edinburgh, UK
Funster No
82,244
MH
Van conversion
Exp
2000
Boardboi If you do not have it ,there is a service manual , including wiring , For the Dometic 8 series fridge in the Manuals for Motorhome stuff section of Resources (in the menu ) that could be useful in checking for the fault and the lights connections.
Thanks
 
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Boardboi

Free Member
Jun 28, 2021
13
5
Edinburgh, UK
Funster No
82,244
MH
Van conversion
Exp
2000
Still not sorted. The LED light has has a dedicated 12v input. The cable (brown & white) exits the rear of the fridge & connects to the rear PCB. I'm assuming that if I disconnect the wires from the PCB & connect an alternate 12v supply the LED should illuminate unless the wiring is open circuit. Any thoughts ?

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