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Open Roads Forum  >  Class A Motorhomes

 > Water hotter on LP than electric - normal?

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2inAlabama

Huntsville, AL

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Posted: 04/25/12 07:11pm Link  |  Print  |  Notify Moderator

Or is my electric element dying?


Just DH & DW


2oldman

Winchester WA

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Posted: 04/25/12 07:13pm Link  |  Print  |  Notify Moderator

normal

fla-gypsy

North Florida

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Posted: 04/25/12 07:29pm Link  |  Print  |  Notify Moderator

Normal on my TT also


09 SuperDuty Crew Cab 6.8L/4.10(The Black Pearl)
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Old-Biscuit

Across the USA

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Posted: 04/25/12 07:38pm Link  |  Print  |  Notify Moderator

Some water heaters have a set of thermostats (normal/high) for each mode of heating...one for propane and one for electric.

Some water heaters have just one set for both modes of heating..propane/electric.

Regardless.......both sets are pre-set for same temp. control (typically 140*F normal & 170*F High cut off).
Water or thermostats don't care which heat mode is used......same effect.
Electric takes longer than propane for initial heat or reheat.....that's the only difference between them.

If water does not get as hot on electric as it does on propane:
Are you waiting long enough for water to properly heat?
How often do you drain/flush tank.....hard water? Scaling on element can reduce heating ability.
Do you have one set or two sets of thermostats?
Check grounds?
Check that thermostat is tight against tank?


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dougrainer

Carrolton, Texas

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Posted: 04/25/12 07:41pm Link  |  Print  |  Notify Moderator

2inAlabama wrote:

Or is my electric element dying?


They either work or they don't. There is no middle ground. Doug

pianotuna

Regina, SK, Canada

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Posted: 04/25/12 07:52pm Link  |  Print  |  Notify Moderator

Hi,

Recovery time on a ten gallon electric is 90 minutes. I find that starting with water that is "ground temperature" it takes closer to two hours.


Regards, Don
Kustom Koach Class C 28'5" 256 watts Unisolar, 875 amp hours in two battery banks 12 volt batteries, 2500 MSW watt inverter.

Jim@HiTek

Gresham, OR, USA

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Posted: 04/25/12 07:55pm Link  |  Print  |  Notify Moderator

Normal.

Work around: 10 minutes before needing sustained hot water, switch on the propane. Shut it off after. No reason for the propane running all the time, IMO.


Jim@HiTek
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LVTOCMP

Green Bay,Wis. , Brown

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Posted: 04/25/12 08:18pm Link  |  Print  |  Notify Moderator

2 you are right. The temperature sensor on electric is a fixed temperature sensor of 125 degrees. The fixed temperature sensor on propane is 140 degrees. I changed my electric sensor to 140 degrees.


Jerry

2inAlabama

Huntsville, AL

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Posted: 04/25/12 08:20pm Link  |  Print  |  Notify Moderator

We left the water heater on electric when we left this morning at about 10. We came back this afternoon at 6, but the water was only mildly hot. You could easily hold the your hands in it without being burned or even uncomfortable.

Golden_HVAC

Fulltime, CA, USA

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Posted: 04/25/12 08:27pm Link  |  Print  |  Notify Moderator

2inAlabama wrote:

We left the water heater on electric when we left this morning at about 10. We came back this afternoon at 6, but the water was only mildly hot. You could easily hold the your hands in it without being burned or even uncomfortable.


This sounds like a loose connection, a bad heating element, or something else broken. Or the wire to the electric heating element is unplugged now.

Fred.

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