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Old 04-05-2021, 01:52 PM   #1
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Brand: Thor Motor Coach
Model: 40RT
State: Arizona
Posts: 22
THOR #20989
Fault on Multiplex

Hello all,
My 2018 Tuscany shows a fault (Clear & Cycle) on my Multiplex board when I turn the Aaua Hot Diesel on. The system does work but the fault light stays on.
I have not had the same issue when the Aqua Hot Electric is switched on. Yes the Aqua Hot has been serviced and as said works fine.

Would appreciate any ideas on clearing this fault...

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Old 04-05-2021, 02:16 PM   #2
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Brand: Thor Motor Coach
Model: 2020 Magnitude SV34
State: Florida
Posts: 4,147
THOR #12751
You will want to kill the 12V to the multiplex system so it forces a reboot. If you are unplugged from shore power, then put the Use / Store Switch in the Store position.

If you are on Shore Power, you will need to turn the breaker off to the Converter to make sure it is not keeping the multiplex system powered up when you put the witch into the Store mode.

After the multiplex shuts off, wait a minute and bring the 12V back up and see if the fault cleared.
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