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Bosch AquaStar 2400ES-NG Questions & Answers
Hi there, I have a
This should run two showers at once with no problem. If you have a shut off valve on the cold side of the heater, try closing about halfway. This will slow the water flow and the water will have more time to heat up as it pases through the tank. If you dont have a shut off valve, just cut back the hot water valve on your shower and do not use any cold water. If it gets too hot then turn on a little cold water. The object is to slow the speed of the water going through the tank. Tankless heater take a little getting use to but they work great when you know how to treat them. On my shower I turn the hot all the way on until it gets hot and then add a little cold water to bring the temp down. You may have too much water going through too fast to be able to heat it up to what you need. Try this and see how it works.
Whistling Bosch AquaStar 2400ES-NG
if you have incorrect gas line size when it kicks on the lack of gas pressure to the unit will cause a wistling. make sure you have enough gas to the unit
Bosch tankless watwer heater GWH
Hi,
The unit is plugged up with mineral buildup from the water going through it... it will need to be cleaned internally....this is done by running an acid solution through it to clean out the mineral buildup...
Then it will work again...
heatman101
Bosch 2400E EC code
it sounds more like the gas valve, you can taje the numbers off of it call or e-mail the compant and buy a new one,,, the thermal coupling keeps the piliot lit but i don't get it RECONDITIONED, I have been doing plumbing for 34 years now and to get a water heater thats reconditioned it would probobly be cheaper to buy a new water heater with this kind of problem good luck
The hot water shuts off during a shower. All the
One of the problems with these has been that you must be using at least 1/2 gallon per minute for the burners to ignite. In the summer when the incoming water is already warm, we tend to not use enough hot water to keep it lit. Try turning on the hot water faucet in the sink and 'wasting' some hot water during the shower. If that fixes the problem you can find some other adjustments on the Aquastar website to help lower the temp some.
Bosch GWH2400 ENG has an E2 message
E2 is a cold water inlet temp sensor. Has your unit experienced any freezing conditions? If it senses below 36 degrees or above 90 degrees it will show this error.
If its normal temp, and you still get this error...check your sensor. Its an 8(kohm) sensor. Make sure its not open. If it reads ok and your temp is not an issue, then you probably have a bad control board
Error code tankless gas
E2 is a cold water inlet temp sensor. Has your unit experienced any freezing conditions? If it senses below 36 degrees or above 90 degrees it will show this error.
If its normal temp, and you still get this error...check your sensor. Its an 8(kohm) sensor. Make sure its not open. If it reads ok and your temp is not an issue, then you probably have a bad control board
C7 is code
C7 is displayed when the primary fan (the one in the middle just under the copper heat exchanger) does not spin or the computer does not recognize that it is spinning. There is a plug on the back of the fan. Make sure it is plugged in all the way.This also happens when the computer gets damaged because the unit is plugged in to an extension cord, power surge or poorly adjusted combustion (most contractors lack the proper equipment to adjust the flame on high efficiency equipment). I have been to over 500 tankless water heater installations and found every one of them were not adjusted at all! It can also be a damaged fan caused by an improperly installed exhaust pipe.
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