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Old 01-20-2020, 05:56 PM   #1
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Default What Sadist designed the ERA 170M's water heating system?

The Truma Combi water/space heater works pretty well... ESPECIALLY when you've got shore power and can run with both propane and electric heat.

My Truma system started throwing an erorr #45: No AC power.

Apparently this usually means the plug fell out of the wall socket, the GFCI tripped, or a thermal overload switch tripped.

To get access to the GFCI and the rest of the 120V side of the heater, I had to take almost everything out of my "trunk", take apart a major chunk of the trunk's wooden frame, and then have the arm flexibility of a yogi to reset the GFCI.

It works now, but Winnibago is really getting on my last nerve.
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Old 01-20-2020, 06:42 PM   #2
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The Paseo has a similar setup, but once I got to the outlet and saw where it was, I realized that you could reach an arm in through the little rear storage compartment and find the outlet by feel. I don't know if the Era has the same little access cubbyhole, but if it does, that makes it a lot easier to reach...
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Old 01-20-2020, 06:44 PM   #3
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Also, on ours that GFCI will often trip if you forget to make sure the Truma is turned off before connecting or disconnecting shore power.
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Old 01-20-2020, 06:51 PM   #4
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Also, on ours that GFCI will often trip if you forget to make sure the Truma is turned off before connecting or disconnecting shore power.
That is, likely, EXACTLY what happened.

Given that Winnebago installed a 120V outlet in free space and plugged in the heater, I think I might look into swapping it out with a non-GFCI socket, and putting a GFCI breaker into the 120V panel... at least then it will be simpler to fix when it pops.

To the previous post, I suspect, now that I know where it is, that my wife will be able to reach the reset button... but I have these darn muscled, manly-man arms to worry about.
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Old 01-20-2020, 07:21 PM   #5
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That is, likely, EXACTLY what happened.

Given that Winnebago installed a 120V outlet in free space and plugged in the heater, I think I might look into swapping it out with a non-GFCI socket, and putting a GFCI breaker into the 120V panel... at least then it will be simpler to fix when it pops.

To the previous post, I suspect, now that I know where it is, that my wife will be able to reach the reset button... but I have these darn muscled, manly-man arms to worry about.
I'm a skinny guy, sadly I don't have the muscled manly arm problem...
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Old 01-20-2020, 07:48 PM   #6
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After hearing about the GFI I decided to locate mine in case it ever gives me trouble. I checked out the wiring diagram and realized all I had to do is pop off the air return grill and the outlet is sitting right there easily accessible. Glad for my sake the A has better access. I probably should have swapped it out when I had the cover off. No doubt I will pay the price down the road .
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Old 01-20-2020, 08:25 PM   #7
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Glad for my sake the A has better access
you've just summed up the RV world in a single sentence.
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Old 01-27-2020, 01:23 AM   #8
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Simple fix. Replace with a standard 20amp outlet. Did this over a year ago on our Travato with no issues.
Some folks are even installing a GFCI breaker in the breaker box....
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Old 01-27-2020, 02:11 AM   #9
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Simple fix. Replace with a standard 20amp outlet. Did this over a year ago on our Travato with no issues.
Some folks are even installing a GFCI breaker in the breaker box....
That's my plan... I just need to find out if the power management device (that turns the heater off in overcurrent situations) would interfere with the breaker.
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