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Topic: Aqua hot won’t fire up (Read 4295 times) previous topic - next topic

Re: Aqua hot won’t fire up

Reply #25 –
I ran some tests yesterday for Richard.  The bus bars along the sides of the circuit breakers behind the white panel were each at 13.43 volts, no charge sources on.  The main 12v common positive post and each of the output sides of the breakers were the same.  The voltage at the +12v common connection at the AH to the -12v common negative post behind the white panel was 13.43 volts as was the voltage between the AH +12v common connection and the AH common ground post.  When The diesel side of the AH started up voltage at the AH +12v common connection dropped to 13.27v.  The voltage at the output side of the AH circuit breaker was the same 13.27v.  The other side of the circuit breaker was still 13.43v.

These are thermal circuit breakers, 20 years old, old technology too.  The voltage drop is across the circuit breaker.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Aqua hot won’t fire up

Reply #26 –
Roger posted before I did and when I hit post it didn't go through and lost the post so I'll do it again.
 What Roger said is true, but the monkey wrench is when the salesman switch is in the off position, the voltage to the AH and the other components in that circuit, drop to around 11.3v, when that circuit should be reading 00.00v. With switch "on" all voltage is the same as battery voltage. This leads me to believe that the salesman switch is not working as it should so I need to confirm this. If the switch turns out to be good, then I have to figure out why that's happening! The fun never stops does it!
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: Aqua hot won’t fire up

Reply #27 –
Here's the 12VDC diagram. From the AH breaker and up, is tied into the salesman switch. Below that is always battery voltage, unless they are disconnected.
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: Aqua hot won’t fire up

Reply #28 –
I have sold my coach and no longer have a need to repair my old wabasto control unit for a backup (spare) Is anyone interested in this unit as it had failed and I upgraded to the solid state box.  I would like to recoup a few bucks for it but not looking to gouge any pocket books for it.
Chuck Wiggy
Coloma, Wisconsin
Sold my 1999 U 320 40 Ft. M11 450 hp
Build # 5468
2009 Silverado

Re: Aqua hot won’t fire up

Reply #29 –
If it was repaired I might buy it!
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: Aqua hot won’t fire up

Reply #30 –
I thought it made sense to put this here, and not start another thread.

Yesterday, I had the same symptom as the OP.  I hooked 12-volt up to the leads for the ignitor and got a weak, intermittent, and mostly not-there spark.  After checking the price for an new ignitor coil, I went back and did more checking!

The push connections between the coil and the motor, behind the coil, were dirty!  Cleaned the connections up, and all seems fine now.

I love those "dodged half a coach buck" repairs.
Matt B
1998 u-320

Re: Aqua hot won’t fire up

Reply #31 –
http://www.aquahot.com/files/service_manual/AHE-100-02S%20Service%20Manual%20Rev.%20B%209-27-2011.pdf

So as manuals go theirs are easy to use and understand IMO outstanding and will lead you down the path without difficulties. Last time i used i had replaced my fuel nozzle and started several time then would not start. Followed trouble shooting tree and within a half hour had determined i needed a new ignition unit. I call the master Aqua Hot tech Rudy and verified my problem and within minutes he was shipping me one out without letting me pay for it till I received. Way over the top IMO to receive this type of service and actually made me concerned to make prompt payment. Can't recall the last time anyone or anyplace conducts business this way. Also Outstanding! Yes the aqua hot is more to deal with but also has more rewards. 👍👍
Scott

Re: Aqua hot won’t fire up

Reply #32 –
I printed up that manual when I had the Monaco just incase there was no cell service or wi fi where I was camped. Put it in a folder and now it resides in the coach with all the other manuals. Like Scott posted the trouble shooter will pin point most issues.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Aqua hot won’t fire up

Reply #33 –
Quote from: craneman –
I printed up that manual when I had the Monaco just incase there was no cell service or wi fi where I was camped. Put it in a folder and now it resides in the coach with all the other manuals. Like Scott posted the trouble shooter will pin point most issues.
Changing world we live in. I copied to books in both my IPads. Same thing only different. Lol
second thought i think i will follow your lead and print a copy.