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Intermittent hot water - Bosch PowerStar AE115 Tankless Water Heater...

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Intermittent hot water.Changed diverter valve,heat exchanger,fan, PCB. Vaillant turbomax 282e But still no hot water.


Sounds like you need a new Thermo coupler.
Could be as simple as a dirty pilot and needs cleaning but I suspect a thermo coupler.

Apr 14, 2016 | Water Water Heaters

1 Answer

Junior 24i intermittent hot water heating works fine and the green light comes on when turn hot water tap but water cold


sounds like you need a plumber many tanks have an internal pipe that sends the cold water to the bottom of tank called a DIP tube plastic and they fail

Feb 23, 2015 | Water Water Heaters

1 Answer

Richmond water heater


The water inlet to the heater must be plugged.

May 16, 2017 | Water Heaters

1 Answer

Valliant vuw 282 boiler


check gas pressure and when water gets cold see if voltage to gas valve loose pressure switch wiring could also do it or unit overheating and shutting off

Dec 17, 2017 | Water Heaters

1 Answer

I have a Bosch GWH 425 HNO propane Tankless Water Heater which began intermittently exploding when demand for hot water occurs.


Call a qualified service tech immediately.
Gas explosion indicates dirty combustion parts, and gas is not fully igniting when tankless turns on the gas. So gas builds up and then explodes causing serious damage to tankless, and serious risk to homeowner.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Aug 14, 2012 | Bosch & Tankless LP Hot Water Heater

1 Answer

Leave cold water tap off tun hot water tap on intermittent hot water


check your element's,possible one may be burnt up.also your thermostat's should be set at same temp.

Apr 24, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Hot water is cutting out after 2 - 3 minutes whilst showering


check the screen on the cold water intake on the cold side,, you might have to flush the system out, and do you have the shower head water restricter in, if not you may be using to much hot water,,, how many other hot water fixtures are running at the same time? try running just the shower,,,if this is a tank water heater the dip tube could be bad that is on the cold side it takes the cold water to the bottom of the tank and forces the hot water out,, if you ar only getting a couple of min of hot water and the dip tube is bad it is not going to the bottom but just at the top and not getting all the hot water you will need a plumber

Mar 21, 2009 | Water Heaters

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