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Old 09-12-2016, 04:45 PM   #1
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Location: Fort Pierce, FL
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Water heater - D.S.I. Fault ??

Has anyone had this come on? We just got set up and went to turn in water heater only to have this error.

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Old 09-12-2016, 05:05 PM   #2
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Location: Brazoria County, Texas
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I'm assuming you're referring to the little red light by the switch? That's just the indicator for when the electronic ignition doesn't light the gas. It normally goes on when the switch is flipped then goes out. The most common reason for it to stay on is if the propane is turned off or empty. It may also stay on if the gas lines are full of air after sitting for a while and the ignitions times out (usually after three tries). If that happens, turn it off then on again.

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Old 09-12-2016, 05:23 PM   #3
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It shows a fault (or flt) until the propane lights up, then it goes out. If the propane fails to ignite after a few cycles (this is the clicking you should be hearing as the direct spark ignitor/DSI is making sparks to light the propane) then the system goes into a lockout mode...... and the light will stay on but the dsi quits trying to make sparks.

To reset the lockout turn the dsi switch off, then on again after a few start the process all over again. If you have air in the lines you may have to do this a few times. Try turning on your stove burners to purge the air and make sure you have propane delivery.

Once the propane ignites, then the fault light will go off.

If it doesn't light after a few may have a problem somewhere in the propane delivery...which I am assuming you have the cylinders open.

This thread may also help if you have perhaps a Suburban water heater:

Suburban's electric switch and much more
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I've just ordered a chicken and an egg from Amazon.... I will keep you posted.
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