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Old 11-28-2013, 10:19 AM   #1
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Aspire Aqua-Hot propane burner not firing

Last evening when I switched to gas heat, I discovered that the propane burner would not ignite (why do these things happen at the start of a four-day holiday with below freezing temperatures ). Antifreeze levels are OK and I cannot find any circuit or fuse issues. Interesting that the fans are coming on every hour or so and blowing a mildly warm air. I assume the electric element in the water heater is accounting for that. Any thoughts on what might be wrong or need checking? Thank goodness for the fireplace.
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Old 11-28-2013, 10:38 AM   #2
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Have you checked your propane levels? Are your stove burners operating?
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Old 11-28-2013, 10:58 AM   #3
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These units have a 3 try attempt at lighting. After 3 attempts it locks out the controller and requires a reset of the control board. In order to do this you must remove all 12VDC power to the unit for a minimum of 5 seconds.
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Old 11-28-2013, 11:16 AM   #4
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Yes on the propane. I filled the tank two days ago. It was doing fine and then we moved the coach about 50 miles and now it is acting up. We are at a relative's farm and although we have 50 amp, I could not get the coach completely level due to the slope but I wouldn't think a few degrees off level would affect a propane burner. I have shut down the burner and will try it again in an few minutes. At least it is now warm enough that I can use the reverse cycle units but that doesn't give hot water and the electric element is not going to make it comfortable for showering unless we really space that out which we may have to do. It might be warm enough tonight to run the reverse units straight through. Thank you for your question and suggestion.
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Old 11-28-2013, 03:04 PM   #5
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It looks like the "reboot" did it. Thank you for that advice. Too bad that Aqua-Hot does not include that in the Troubleshooting section of their manual.
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Old 11-28-2013, 03:22 PM   #6
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Certainly. These units perform quite a few checks during the burner-on process. Let's hope it was just a glitch and this reset takes care of it. Should it fail again while in operation over the next few days we can look a bit further at the flame sensor and/or it's fan validation process.
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Old 11-28-2013, 03:25 PM   #7
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How did you reboot? Circuit breaker?
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Old 11-28-2013, 03:54 PM   #8
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I've had 2 AquaHot diesel units. the one built in 05 had a reset button on the motherboard; the one built in 07 resets automatically each time you power the diesel Off/On. They added the same logic on the LP versions. Per the service manual for the 375LP model:
When a call for heat is received from the control thermostat
supplying 12 volts to PWR, the controller will reset, perform a
self check routine, and a pre-purge delay begins.
IIWM & removing power leads did a reset that the built in reset wouldn't fix, I'd add a heavy duty 12V switch on the hot lead to the system, so I could do a hard reboot w/out having to take it to the screws & contacts level each time.
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Old 11-28-2013, 05:40 PM   #9
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I gotta say I didn't know about the Aqua Hot reset. There's yet another thing they should add to the old manual. In my former life in the USAF you could propose a change or addition to manuals online. I see things like this everyday about Entegra RVs and think this'd be a good thing. I almost think if a manufacturer would let manuals be a "living document" like Wikapedia it would benefit from all the hard lessons owners encounter.
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Old 11-28-2013, 08:29 PM   #10
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Ditto

Quote:
Originally Posted by Kuppajoe View Post
Last evening when I switched to gas heat, I discovered that the propane burner would not ignite (why do these things happen at the start of a four-day holiday with below freezing temperatures ). Antifreeze levels are OK and I cannot find any circuit or fuse issues. Interesting that the fans are coming on every hour or so and blowing a mildly warm air. I assume the electric element in the water heater is accounting for that. Any thoughts on what might be wrong or need checking? Thank goodness for the fireplace.
This just happened to me this weekend as well. I contacted Entegra and they referred me to Aqua Hot - Matt. He walked me through the process of turning off the burner (in the bathroom) and then pulling the fuse (#16/25 Amp in the driver side outside compartment). I pulled it and did a reset still would not fire. I then pulled the front of the aqua hot box off and he had me adjust the airflow. I did and now it works fine. It looks like the common denominator in our problem was we just had our propane refilled. Since mine was refilled by a service when I was away, I'm wondering if the problem initiated due to not turning off the aqua hot prior to refill.

Did you turn off your aqua hot prior to refill? Just trying to see if that is our issue.

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Old 11-29-2013, 06:44 AM   #11
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We've filled our tank three or four times - I did turn the burner off each time. The only issues we have had involve the check valves. Twice when the burner would not fire, the advice was to "give the check valves a couple of whacks." Since that involves removing a wall separating compartments in the basement and then removing the cover to the Aqua-Hot unit, it was always done by a repairman. I don't remember the problems coinciding with a fill - and we were never advised to reset the unit, either by CS or by AH. AH inspected the check valves when we were at Middlebury last summer and said they did not need replacement. Our unit is in storage but the basement heat is on - we've been out of town because of some family issues but will be checking it this weekend to be sure everything is okay. Keeping my fingers crossed!
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Old 11-29-2013, 06:48 AM   #12
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For comparison. I have had my Aspire LP tank refilled 4-5 times without incident. I always had my Aqua Hot turned off. Maybe I was lucky, maybe others were unlucky.
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Old 11-29-2013, 06:46 PM   #13
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Cool

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For comparison. I have had my Aspire LP tank refilled 4-5 times without incident. I always had my Aqua Hot turned off. Maybe I was lucky, maybe others were unlucky.
Unfortunately I was not at the coach when they filled my LP so my burner was left on...so, maybe that was the issue for me. Anyhow, all was fixed with the reset and cozy warm now.

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