Aquahot keeps going through nozzles - Printable Version

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+--- Thread: Aquahot keeps going through nozzles (/showthread.php?tid=7115)

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Aquahot keeps going through nozzles - AlanJohnson - 12-05-2022

The last two times i've done maintenance on my 431/12 aquahot the diesel works for a couple months and then quits again. I don't use it a lot, but I do know to use it at occasionally. I change the nozzles and clean out the soot and it works fine for a short time.  The last time I did not change the filter, as it was barely used since the last time. I'm going to be full-timing for a while and I would like to have this operational.
Any ideas on this?

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RE: Aquahot keeps going through nozzles - Richard - 12-05-2022

How do you know it's the nozzle? Not trying to be a wise guy, just saying that there are many reasons the AH won't fire.

Can you describe in more detail, what it does, and does not do?

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RE: Aquahot keeps going through nozzles - Trainer - 12-05-2022

Alan, send me you phone number and a good time to visit with you at the heater. My 431 and another Prevost friend with a 431 just run and run. Bet we can sort it out.

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RE: Aquahot keeps going through nozzles - Wanderman - 12-05-2022

Yup... Rudy will square you away.

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RE: Aquahot keeps going through nozzles - AlanJohnson - 12-06-2022

Richard, The last two times it has been the nozzle. The blower comes on for a few minutes and then goes off. The coach is at Newell right now getting a couple things done that I can't do. But I need to fix the aquahot straight away when I get it back. I suppose it could be something else, but at this point I'm basing my diagnosis on it past problems.
Rudy, my number is 972-769-2526.
Thanks for the responses.

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RE: Aquahot keeps going through nozzles - Trainer - 12-06-2022

Alan, called you twice at about 8:30. Phone answers but no one there.

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RE: Aquahot keeps going through nozzles - AlanJohnson - 01-06-2023

Hey Rudy,

The diesel burner is working great on my aquahot now, but it keeps tripping the over-heat and I have to reset it. I mostly use it in addition to the electric, and when i want a long hot shower. I am not tripping the electric over-heat, just the diesel one. Any suggestions on how to remedy?

Thank you,
Alan Johnson

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RE: Aquahot keeps going through nozzles - Trainer - 01-07-2023

Over heating can be caused by Control Thermostat not opening at correct temp. Cheap item to replace. But before that, make sure the main coolant tank is completely full. Open radiator cap on top if tank and fill completely up.

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RE: Aquahot keeps going through nozzles - AlanJohnson - 01-08-2023

Well, what do you know... I am low on coolant. I have only been checking the overflow tank, but apparently that does not tell me much. Maybe my cap is not functioning properly?

My aquahot is the 432/31. Is there a coolant I can pick up locally somewhere for it? It is rather confusing trying to figure out what I need, and the manuals I have do not tell me. I'm traveling so I would rather not flush the system and start over right now. But if that is my only option let me know.

Thanks
Alan Johnson

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RE: Aquahot keeps going through nozzles - Trainer - 01-08-2023

A 431/12 uses engine coolant, same as generator or main engine. Coolant should be 50/50 concentrate and distilled water. Some coolant is sold already diluted. If you only need a gallon or so, just use distilled water. It is recommended to no use undiluted coolant concentrate.

Radiator cap is a 13 lb one. But 10 or 7 lb will do. May need to take to auto parts store as young clerks can not find aqua hot in their computer so they are completely lost. But the old guys will know right away.

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