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Topic: Aquahot 100-01 cant keep hot water (Read 259 times) previous topic - next topic

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  • DavidS
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Aquahot 100-01 cant keep hot water
Already changed the mixing valve at the shower first and fixed the problem originally..

Now I have changed the mixing valve on the aquahot, CHanged all the coolant with ELC red to match the motor

Cleaned =and flushed the water to descale before...

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Re: Aquahot 100-01 cant keep hot water
Reply #1
Probably need Rudy on this one. Do the heaters work? Did you buy a new AH mixing valve and just use the guts out of it for the installed valve? Did you adjust the mixing valve after installing?

  • Rudy
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  • Commercial Member
Re: Aquahot 100-01 cant keep hot water
Reply #2
David,  Any time the burner is running, so should be pump 2 stiring the coolant in the tank.  Pump 2 is energized during burner operation by the red diode wire coming out of the harness to the burner running over to the pump connection on the...

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  • DavidS
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Re: Aquahot 100-01 cant keep hot water
Reply #3
David,  Any time the burner is running, so should be pump 2 stiring the coolant in the tank.  Pump 2 is energized during burner operation by the red diode wire coming out of the harness to the...


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  • Rudy
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Re: Aquahot 100-01 cant keep hot water
Reply #4
Well David,  The red diode wire needs to show battery power at the relay connection.  If so, the pump is probably bad.  Flow the power and where it stops is the problem.

The power from the burner to the pump is connected at the relay.  The relay...

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  • DavidS
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Re: Aquahot 100-01 cant keep hot water
Reply #5
Heater is working in the bath for sure as I used it this weekend.. I will run through and call if I get stumped (sorry stump I couldnt resist)..  :))

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  • Rudy
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Re: Aquahot 100-01 cant keep hot water
Reply #6
With pump verified, bet this is a cheap fix.  Let me know what you find.

Re: Aquahot 100-01 cant keep hot water
Reply #7
Are you heating near-freezing outside water or fresh tank water? 

Re: Aquahot 100-01 cant keep hot water
Reply #8
What gpm is your shower head flowing?

  • DavidS
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Re: Aquahot 100-01 cant keep hot water
Reply #9
Are you heating near-freezing outside water or fresh tank water?
No 55 degrees at my house and the heater in the basement was on.

Shower head is a water saver head with the air hole for mixing...

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