Answer
Dec 09, 2025 - 11:36 PM
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The small board with the buttons/display and the main control board inside the machine are supposed to talk to each other.
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E-6 shows when that communication drops out because of:
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Loose or partially unplugged communication cable/connector
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Corroded or damaged connector (moisture, vibration in an RV, etc.)
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Failing display board or main board
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Power cycle it properly
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Turn the unit off.
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Unplug shore power (or turn off the breaker / inverter feeding it).
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Leave it off for a solid 5–10 minutes.
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Plug back in and try again.
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If E-6 comes back quickly, it’s not just a glitch.
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Inspect the low-voltage harness between the display and main board
Only if you’re comfortable pulling panels and working around appliances:-
Unplug power before you touch anything.
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Access the top/front panel (where the display is) and the main control board (usually behind a rear/top panel).
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Look for the small multi-wire harness that goes from the display area down to the main board.
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Reseat both ends:
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Pull connector straight off.
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Check for bent pins, corrosion, burnt spots.
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Push it back on firmly until it’s fully seated.
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Look for:
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Any pinched, rubbed-through, or mouse-chewed sections of wire.
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Signs of water or moisture near the board.
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Visual check of the main board
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Still with power disconnected:
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Inspect the control board for:
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Burn marks
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Swollen or leaking capacitors
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Cracked solder joints
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If the harness and connectors look clean and solid, and the code still comes back, you’re usually down to:
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Bad display board
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Bad main control board
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Or in rarer cases, the cable itself is bad internally
At that point it becomes a board-level repair or replacement job.
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