Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 12, 2025 ...

AquaHot Question?

December 05, 2014, 11:53:34 am

Scenario:
On our most recent trip the weather was moderate so we just used the electric part of the AH. When the weather turned colder I decided to turn on the diesel burner. The light came on but the AH blower did not start. As this was our last day I did not troubleshoot the no start condition.
When we got back to the barn I tried the AH and it worked just fine.
Question:
If the water temp. is at set point (from the electric element) would that keep the AH from starting on diesel?

Quote Selected

Re: AquaHot Question?

Reply #1 – December 05, 2014, 11:57:06 am

If I understand the question correctly, my diesel does not fire the AH if the electric is keeping the AH at the right temp.  So at 50 degrees ambient, as an example, the AH if left on both diesel and elec will seldom if ever use the diesel

Hope helps

Mike

Quote Selected

Re: AquaHot Question?

Reply #2 – December 05, 2014, 12:02:44 pm

I did turn off the electric element before I switched on the diesel. I am sure the water temp was still at set point.

Quote Selected

Re: AquaHot Question?

Reply #3 – December 05, 2014, 12:07:44 pm

Old hippie, you are correct. As lon as the electric element keeps the liquid at the proper temp, the diesel should not come on.

Quote Selected

Re: AquaHot Question?

Reply #4 – December 05, 2014, 12:10:22 pm

+1 what Mike and rbark said.

Quote Selected

Re: AquaHot Question?

Reply #5 – December 05, 2014, 12:14:17 pm

cut on temp for electric is 185.  Diesel is 175.

Quote Selected

Re: AquaHot Question?

Reply #6 – December 05, 2014, 12:23:15 pm

So, can the diesel be on at the same time as the electric? or should you use one or the other?

Quote Selected

Re: AquaHot Question?

Reply #7 – December 05, 2014, 12:27:54 pm

You can have them both on

Quote Selected

Re: AquaHot Question?

Reply #8 – December 05, 2014, 01:08:58 pm

Yes

Quote Selected

Re: AquaHot Question?

Reply #9 – December 05, 2014, 01:09:58 pm

Both is perfect

Quote Selected

Re: AquaHot Question?

Reply #10 – December 05, 2014, 01:43:26 pm

Thanks all.
Still learn'n....

Quote Selected

Re: AquaHot Question?

Reply #11 – December 05, 2014, 02:48:30 pm

Quote from: Old Hippie – December 05, 2014, 01:43:26 pm

Thanks all.
Still learn'n....

If the electric element cannot maintain the boiler temp over the 175 degrees then the diesel burner comes on. 

Seperate systems.  Different cut on sensors.  Different cut off temp sensors as far as I know

Quote Selected

Re: AquaHot Question?

Reply #12 – December 05, 2014, 05:47:15 pm

All of the above is correct ----- till you have a young enough coach to have a heater controlled by an electronic control board.

Then the one control thermostat turns on which ever heat source is on and then off all at the same time.

Quote Selected