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G_and_D's avatar
G_and_D
Explorer
Nov 18, 2013

Suburban Water Heater Wiring Issues

My new to me C Class has a suburban water heater that has some wiring problems. It appears that several ground wires do not run to ground and I want to correctly re connect them. I will post pics of the culprits.





1. The wire connector to the electrode was not connected. It is housed in the flesh colored rubber boot and has a female spade connector. Am I correct that it connects to the male spade connector end of the electrode?



2. Coming from the same hole as the electrode connector wire in 1. above is a black or(could be old dirty blue) wire (I assume it comes from the module board, forward) that is not connected to anything. Looking at the schematic it appears like it should terminate on the DC junction box. Is this correct?



3. In the picture there is a black box with a slide switch. It appears to cover the location of the electric element. The slide switch has two positions one left (I assume off) and one right (I assume on). I this assumption correct?



This box has three connector positions. - top connector with blk/white wire, + middle connector with black wire and G bottom connector. The middle black wire is not connected to anything. Looking at the schematic I can not determine where it should connect. Will any ground screw work?

I am going to do my best to upload pictures for reference but I cant get schematic to upload. Thank you for any help you can provide.

13 Replies

  • IF you have removed the 'reignitor' box and are attempting to return this WH back to stock wiring/operating.........

    Please post model number.......!!!

    Item 1) YES that large flesh colored wire goes to the spark electrode. The spark electrode has a ground rod and the assembly is grounded via mounting bracket screwed to frame
    Item 2) Standard wiring from module board is RED (12V DC from gas ON/OFF switch), BLUE from module board to 'Light', GREEN..12V DC ground & Yellow...also ground (sometimes Yellow is just in DC Junction Box
    Item 3)??????? IF you have an electric element there will be a separate AC Junction Box and electric element would be under/behind gas valve left of drain plug with an ON/OFF switch in outside compartment....so not sure what you are referring to

    Re-read the section on picture posting...really hard to visualize what you are trying to explain

    IF not going back to stock and you are still trying to get that jury-rigged set up working........never mind.
  • Didn't we go through all of this in this thread?
    That water heater needs to be put back in stock condition, with the correct circuit board and correct wiring.
  • I tried to upload pictures clicked the images icon, entered the path but nothing??? What am I doing wrong?