Question about Bosch & Tankless LP Hot Water Heater

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WATERHEATER 45 550301 NO HOT WATER - Bosch & Tankless LP Hot Water Heater

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Before calling service technician, open following link for Bosch tankless troubleshooting resources.

Posted on Apr 09, 2011


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017


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Related Questions:


Find your only getting Luke warm water @ your faucets??


This is a common fault with new to used installed waterheater.

It is call a diptube ,made of pvc in part description. It is located on cold inlet,top of waterheater.

Malfunction of dip tube is usually a fracture caused by age mostly,or faulty install when new and tube was exposed to high heat from welding .

This tube allows the cold water supply to flow into W/heater and exit at bottom where it is heated while pushing already heated water to hot side and to your faucet. If this tube is defective ei...cracked the cold will [leak] mix with the hot before reaching bottom to be heat..thus lukewarm water syndrome. Solution $8 part H/depot>remove coldside copper fittings and pull white pvc out,about 4feet long,less rotted area, install new 3/4 inch pvc dip tube with flange up.

Thanks jj505 The HomeRepairman

on Apr 13, 2009 | General Electric GE SmartWater Household...

1 Answer

No hot water from tap . And can not control heating just runs on full

You either have failed heating elements, or your dip tube has corroded and deteriorated.

check out this link, and review that site. Very and highly informational.

Waterheater dip tubes

Apr 01, 2015 | Water Water Heaters

1 Answer

Why water not staying hot?

Insulate your tank.

How old is your waterheater?

If old, then you may have a broken dip tube / cold water mix tube?

See pic below:


Mar 02, 2015 | Water Water Heaters

2 Answers

Where are the shut off valve to cut the water off

Should be on top of the water heater cold water supply.

Feb 23, 2015 | Water Water Heaters

1 Answer

Waterheater does not keep water hot when you get in the shower first thing in the morning you have to turn on only the hot water or the water is cold

1) Unknown water heater type, brand and model.
Check for crossover first to eliminate plumbing problem.

2) Add comment with more information about water heater for possible assistance, and give type, approximate age etc.

If you need further help, I’m available over the phone at

Jan 21, 2013 | Water Heaters

1 Answer

Water heater has hot water in it but cold water is still flowing

Nothing wrong with waterheater. Did you perhaps reverse hot/supply lines on new shut off valves?? try reversing lines. Maybe

Please rate. Thanks jj505

Mar 28, 2009 | Whirlpool Water Heaters

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