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Water Not Getting Above 90F
At this point, I’ve replaced the electric motor in the Webasto Diesel Burner, cleaned everything around it and related to it, replaced the 1650W electric heating element, replaced the red dot thermostat (the one that controls the electric heating element), and even rewired that thermostat on the hot side (it had apparently gotten frayed and brittle).
I’ve had power to the element for four days now, and the hot water is still only registering 90 degrees on a cooking thermometer. What am I missing?
#TryingNotToCallRudyOnSunday
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6 Replies
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Could be a shot in the dark…..check your outside faucet in the water bay and make sure both the Hot and Cold valves are closed and not left on by mistake and water shut off from the shower head……Water will mix in the system and will not get hotter than 90-100 F…
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Omn Aquahot there is a “mixing” valve to control temp.
Might be the same on Wabasto?
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I like the suggetion from Marius a lot. Has fixed several concerns for me.
My phone is on so if all else fails, give me a call. Plus please post what solved the issure.
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Okay, somehow we’ve made it to 100 degrees. Better, but not completely fixed. In the plumbing bay, there is a dial marked A/H Heat (assuming that’s Aqua-Hot). It ranges from 0 to 50. What should this be set on?
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The plumbing bay thermostat is there to control the fan coils that warm that bay. I like like 50 vs 40 because it keeps the internal freshwater tank warmer making it eaiser to heat water from the internal freshwater tank in really cold conditions.
Ninety or one hundred degree hot water is a problem. You should have 115 to 120 degree F hot water, period.
The “A” plug in the Webasto control unit, the brain box mounted on the side of the burner, turns on a coolant circulating pump anytime the burner is running. Have you checked the operation of that pump.
Plus ask owners of your conversion how theirs is set up to work. Some converters run the pump via a relay that operates the pump all the time hot coolant is needed for water and/or interior heating. So in this case the Webasto could be cycled off but the pump would still be running.
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This one. It’s not the electric heater thermostat; that’s beside it. Anyone know what this should be set on?
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