Question about Aquatop aquarium heater - 300w

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My aquatic heater model. D2HT-300 shuts down after about 3mins will not heat tank. What's wrong with it?

Trying to maintain at least 78f

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My water heater shuts down in cold weather. How do I fix this problem


Add tempering tank.
Tempering tank made from old tank-type water heater, or small tank heater will passively heat incoming water.
http://waterheatertimer.org/Tempering-tank.html

This works because tankless can only raise temperature so many degrees. If water is very cold, tankless cannot keep up, so the sensors shut down the unit.
Passively preheating water... or using a small tank connected to power can preheat water enough so tankless works.
Also delime tankless each year will help remove natural scale that builds up inside tankless heat exchanger.
http://waterheatertimer.org/How-to-delime-tankless-water-heater.html

Gene

Water Heater Timers Save Money

Feb 13, 2015 | Water Water Heaters

1 Answer

80 gal power vented gas fired hot water heater. We moved into this house 2 years ago and over the last month or 6 weeks our hot water comes in very hot but does not maintain a constraint heat We have a...


Have you tried turning the temperature down. If so and still have problem shut breaker off, let cool completely and then drain the tank by connecting a water hose to it. Sediment tends to build up on the bottom. When finished disconnect hose, turn valve closed, let tank completely. Fill before turning breaker on.

Dec 31, 2014 | Water Heaters

1 Answer

Just bought this heater for my tank, but its not heating it up to 90 degrees like I want.


how big is your tank? iig greater than about 20 gal, you probably need a higher wattage heater.
BTW 90 degrees is very hot for fish

Nov 06, 2013 | Cobalt Aquatics 75 watt Neo-Therm Heater

1 Answer

I have Rheem model 41V50 leaking from the top...The top is a lid with screw....can I buy and replace the top ?


No.
Replace tank.
Buy 40 gallon from local Lowes and install yourself.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Under thin metal shell is a welded steel tank, surrounded by insulation and then covered with painted metal shell. The shell is what you look at.
The inside steel tank is made to withstand high pressure expansion that comes with heating water.
The steel tank has rusted out.
Turn gas control valve to vacation, so pilot light stays on, and then only heat enough water as needed until you can replace tank.

Prevent next tank from rusting by replacing anode rod, and ground water pipes.
http://waterheatertimer.org/How-to-maintain-water-heater.html

Apr 09, 2013 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

Heat Trap Nipple which side into the tank


Don't install heat trap nipples if house has pressure issues, or pipes get clogged with hard water.
Heat traps will clog, and whistle, hum, buzz, and reduce household pressure.
Make your own heat traps by configuring pipes differently.
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#heat-trap
http://waterheatertimer.org/Low-hot-water-pressure.html#trap

Buy regular di-electric nipples at local box store plumbing department instead of heat trap nipples.
http://waterheatertimer.org/images/IMG_1879-di-electric-nipple-300.jpg

If you go ahead and install the heat-trap nipples, look inside the nipple.
Look past the plastic bar that divides down middle.
Notice that one end has insert inside the pipe. While other end does not have insert.
End with insert goes into water heater first.

Notice also if you blow into the heat trap nipple that air flow is constricted.
If air flow is constricted, then water will also be constricted.
This is why heat trap nipples are not recommended.

Why do they have heat trap nipples??
So manufacturers can report higher EF energy efficiency rating for product.

Do heat traps save money. Yes, but make your own by reconfiguring pipes. Save $9.20 per year electric heater, $4.00 per year gas heater.
You can save more money by maintaining water heater, which pays about 10$ per month in future replacement costs.
Or fix leaks, and install dual-handle faucets so lifting single handle faucet in middle does not continually run cold water into tank. This saves $2-$8 per month.

Nov 27, 2012 | Richmond Heat Trap Nipple Kit - RP20003

1 Answer

The thermal cutout pops on tank two after it shuts off. It boils then shuts off. It also turns off when taking a shower, producing cold water. I checked the ohm readings on the thermal cutout and the...


Question posted under Bosch tankless.
Question says 'tank'
Brand, model, and type heater unknown.
Elements mean electric.
'Thermal cutout pops when taking shower produces cold water' indicates tankless, since tank-type would maintain some hot water.
No error code might indicate tank-type.
Add a comment with type, brand and model number of heater for possible assistance.

Sep 24, 2012 | Bosch PowerStar AE125 AE125 Whole House...

1 Answer

Model md200tbe shuts off, pilot and burner


1) Try blowing it out with a hair dryer. Dust does lots of weird things to gas heaters.

2) There is a thermocouple that opens when it is hot and makes the gas keep flowing. It is a small metal tube that sits directly in the flame. When it heats up, the gas flows. If that is shot, then it won't keep the gas flowing, so it will turn off when you let go of the button. Try tapping it lightly with the tip of a screwdriver to knock it loose. There is about a 10% chance that this might fix it temporarily until you can get a new one.

Mar 22, 2012 | Blue Flame Heating & Cooling

1 Answer

Cold water Washes


It is normal for the machine to cycle between hot and cold water when filling even if selecting a cold cycle. The reason for this is because even a cold cycle requires the water temperature to be 78F for the soap to break up efficiently.

During the cold months the water in your pipes is probably less than 78F so the machine will need to add some hot water to bring it up to this temperature. Basically, it is adding cold and then hot water to maintain a temperature in the tub of 78F for cold water cycles.

Hope this helps, please rate my solution.

Apr 07, 2009 | LG WM-1832C Front Load Washer

1 Answer

Heater will not stay lit on auto procom ml 300 blue flame


If you have an ML300HGA, it is a manual-control heater, which means you turn it on and you turn it off. No thermostat. It does not have an AUTO setting.

Likewise, the thermostat-controlled models do not have a Manual mode. If you have the ML300TBA, it has a thermostat and will turn itself on/off in order to maintain a room temperature.

On manual models, the numbers (if any) on the dial are heat output selections. Set the control to the highest heat setting and that's what it does until you turn it off.

On automatic thermostat models, the numbers on the dial are temperature selections. Set the control to the highest heat setting and the heater will continue running until it is 85-90 degrees, then shut off. Set it around 2 and it will maintain a temp of around 70 degrees.

All Procom heaters are either automatic (thermostat-controlled) or Manual. None are both.

Oct 05, 2008 | Procom ML300HGA Heater

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