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Old 10-18-2017, 07:16 AM   #1
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Hot Water Heater Quit

Third night out in our new-to-us 2003 Intrigue and no hot water now. Switch goes on and off, then stays on. Have the propane tank on. Battery on. Any ideas what I need to check? Cold showers are brutal!
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Old 10-18-2017, 07:23 AM   #2
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Need a bit more info. Do you have a Hydro Hot or Aqua Hot? Or, are you saying you have a LP gas water heater? If you have a LP gas water heater, most of them also have an electric heating element. If so, do you have the electric function turned on? If you have the hydronic heating system (hydro hot or aqua hot), they also have an electric element that can provide some hot water.
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Old 10-18-2017, 01:26 PM   #3
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As a follow on question. If it is a propane driven water heater, have you confirmed you have propane flowing to say the stove top and or furnace? Sometimes the LP Leak Detectors go bad, and or get turned off by accident. So if no other propane is flowing, cycle off/on your LP Leak Detector... (It must remain on, to allow the LP Tank Regulator to flow...).

And a bit more info, would help others help you!

Best to luck to you,
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Old 10-18-2017, 01:50 PM   #4
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Thanks! Iím not there now but will look into all this. I know I have a hydronic heat system that I believe runs on diesel. Before I just turned the hot water heater switch on on the panel. That worked night one. Last two nothing.
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Old 10-18-2017, 02:18 PM   #5
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Could be a few things. First how much hot water did you get on night one and when did you use it versus when you pulled into spot? Reason for this is your coach should have the motor aid that allows the engine to heat your hot water while driving, this is automatic.

Second do you have hook ups or boondocking? If you are plugged in is the breaker for your water heater turned on?

Third is the gas for the water heater, it may take several cycles to purge the air out if it has been off for a while.

Our water heater, gas,dsl,elec, went totally out and it was the high limit switch on the rear. Simple replacement.

Now if you have a hyrda hot that heats the water that is another step. See if you can go through these steps and we can figure this out. I canta standa a cold shower.
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Old 10-18-2017, 02:25 PM   #6
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Thanks! Weíve been parked since Sunday night. Monday, hot shower. Tuesday luke warm. Today chilling! Iíll check these things out when I get back in around three hours. Parked in my dads driveway plugged in to 30 amp. Iím putting in a 50 amp service this weekend.
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Old 10-18-2017, 06:50 PM   #7
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Ok the gas is on, gas leak detection is on, battery on, shore power connected, hw heater switch on. Donít hear the heater lighting. Further, no gas flow to stove. It wonít light. Possibly high limit switch then?
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Old 10-18-2017, 06:56 PM   #8
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Empty propane tank?
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Old 10-18-2017, 07:31 PM   #9
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Your coach has a LP leak detector, probably mounted down near the floor. Mine is near the fridge near the floor. If it is turned off, it will not let gas flow from the LP tank (there is a solenoid valve on the tank which is connected to that LP leak detector). Make sure it is turned on. There should be a little slide switch. When you turn it on, it will chirp and a green light will blink. Once the chirping stops and the green light stays on, the solenoid valve at the tank will open. Then you can light your stove and make sure you have LP flowing.

Do you also have a panel with both an 'electric' and a 'diesel' switch for the Hydro Hot. If so, switch on the 'diesel' and that should let the diesel burner in the Hydro Hot light. That burner, if it works, should give you unlimited hot water once the boiler reaches temp.
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Old 10-19-2017, 06:29 AM   #10
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You probably have a solenoid near the outlet of the propane pressure regulator at the tank. This solenoid is controlled by the propane detector inside your rig. If that solenoid isn't activated you will get no propane.

You say you don't have propane to stove so look at the solenoid. First, is it slightly warm to the touch. If not, no voltage to the solenoid. If it is warm doesn't mean it is working. You can remove the solenoid and with the proper fittings bypass it.
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Old 10-19-2017, 06:36 AM   #11
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Yes good point on the propane detector. It has to be turned on for propane to flow. If it has been off for some time it will take a few cycles to purge the air out of the line and light.

In our coach the switch over the door, the hot water heater switch is for the gas part of the hot water heater. The red light means it failed to light.

In our coach the breaker box by the bed has a breaker for the hot water heater, this is for the electric side of the hot water heater. Check that this is switched on. When you winterize or, if you winterize, this will be turned off. Maybe this is off?

Another thing we had happen. Our hot water got really hot then tripped the high limit thermostat. Several times in a row. This is when I replaced the thermostat and high limit thermostat on the rear of the hot water heater. If you can access the rear of your water heater there is a box protruding at the rear depending on year of heater. I believe yours is the same era as ours. There is a small hole and inside the hole is a plunger that if popped out is the high limit switch. Now if you check this limit switch, TURN OFF THE ELECTRICITY AND PROPANE ETC. This box also has the electric connections inside and could cause you to spill your coffee if you touch the wrong part inside! Whew a big spill.

So, check gas flow. Does stove work? If so cycle the heater a few times and see if it lights. Go out and listen to the heater and see what it is doing.

Check the high limit switch, turn off electricity first, don't forget coffee scenario. Push the button and if it is out see if it pops again. Not hard to replace these thermostats.

Also what kind and model of hydra hot do you have? Take a pic of the switch panel of the hydra hot or the heater its self. Some earlier heaters like our webasto only provide heat to the coach, no hot water.

Let us know.
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Old 10-19-2017, 09:26 AM   #12
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Tank 3/4 full, valve on, leak detector light blinking. Iíll try the hydro hot. Just hope that doesnít heat up the coach...itís pretty warm here in Florida! Thanks everyone...
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Old 10-19-2017, 09:27 AM   #13
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Iíll get a pic and post it later today. At hospital with my dad
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Old 10-19-2017, 10:03 AM   #14
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Maybe related: microwave hood now inoperable. Fuses and the cb in the bedroom all good. Gas stove inop.
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