Question about Bosch Thd2021gb Filtrino Fast Cup Hot Filtered Water Dispenser

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Bosch filtrino blocked

After due scaling water flow greatly reduced

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Posted on Jan 02, 2017

mrhotandcold
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SOURCE: I have a Bosch Aquastar 1600 solar tankless water

check filters and increase coldpressure

Posted on Oct 15, 2009

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How do you do the descalar cycle


It took me ages to get his to work - seems that on the THD2023GB (Black) Filtrino, you push and hold the temp. set button for 10 seconds to get he descale programme running.

Jan 17, 2013 | Bosch Filtrino Fast Cup Hot Filtered Water...

3 Answers

Descaling instructions bosh filtrino fast cup


It took me ages to get his to work - seems that on the THD2023GB (Black) Filtrino, you push and hold the temp. set button for 10 seconds to get he descale programme running.

Sep 30, 2012 | Bosch Thd2021gb Filtrino Fast Cup Hot...

1 Answer

Hi, I have the 1600 NG tankless water heater. Everything works great, but I installed low flow hot faucets throughout the house and now the igniter will not click on. It works for the washing machine. ...


http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html#flow
1) Tankless require minimum flow rate before burner will activate.
2) Sounds like the water pressure drops quickly when faucet turns on. This implies combination of problems including sediment build up inside lines, crossover at single-handled faucet, or sediment filter clogged or water softener clogged.
3) Low flow faucets can reduce needed flow rate.
4) Other problems can contribute: sensor failure, loose wires, PC board failure, high temperature setting, cold incoming water temperature during winter months.

Jul 20, 2011 | Bosch 1600H-NG Natural Gas AquaStar...

1 Answer

Hot water tank does not work when shower is on, it does however work when the faucet in bathroom is on. It quit working in the shower about a month ago.


  1. COLD MIX, HEATER DEACTIVATES
    If inlet water temperature is over 70°F due to geographic location, water maybe very hot out of the tap. This requires a lot of cold water to be added with it in order to attain a useable hot water temperature. The addition of too much cold water will overpower hot water demand from the tankless water heater. This slows the flow within the tankless water heater, decreasing it below activation point, which shuts off the heater. The end result is nothing but cold water coming out of the outlet. See: TWH E2-04 Overcoming fluctuating temperatures [PDF].
  2. FLUCTUATING WATER PRESSURE
    If the water pressure in the home is erratic and the water flow is not consistent while a tap is opened, then the temperature of hot water will fluctuate. The minimum water pressure for the home should be 30psi or greater. For people on well systems the minimum pressure range is 30-50psi. The use of a pressure reducing/regulating valve is an effective way to maintain constant water pressure to the water heater. Watts brand 25AUB- ¾" or N35B-¾" pressure reducing/regulating valves or equivalent is suggested.
  3. CHANGING FLOW RATE
    Major changes in flow rate can adversely affect the output water temperature of the heater. Increases from one major fixture running to multiple fixtures running at one time can cause the temperature to fluctuate. Stay within the heater's specifications. See: TWH E2-03 Outlet temperature vs. flow rate [PDF].
From the Bosch website.

Good Luck,
Gary

Dec 16, 2010 | Bosch PowerStar AE125 AE125 Whole House...

3 Answers

I have a Reliance hot water tank..great cold water pressure but a dribble of hot in the shower.


Take the hot water faucet apart (with water off) and look for scale or even white plastic.Even if it's a single lever, you might have plugging in the hot water side. If you find white plastic, expect the dip tube in your water heater is falling apart.(Dip tubes direct incoming cold water to bottom of heater) Drain some water from your water heater at least annually to reduce solids in your heater.

Oct 05, 2010 | RELIANCE ELECTRIC WATER HEATER

2 Answers

Bosch 2400E-NG output temp fluctuates


This is a great heater. It is however crucial that it be installed to every detail of the manual. If there is trouble send pictures to Bosch tankless you can call 1-800-283-3787 ask for Bosch Tech support or go to boschhotwater.com click find a contractor and call the closest Bosch Service Provider most will travel.

Mar 04, 2010 | Bosch AquaStar 2400ES-NG

1 Answer

When i turn on the cold water to adjust the temperature of water - the hot water turns completly off. I cannot turn on the cold water at all. It is either all hot water or all cold.


It might be a question of inadequate flow. All tankless water heaters have a minimum flow rate that must be met, typically .5-.9 gpm, before the heater will operate. In the summer time the incoming ground water temperature is higher, causing you to mix more cold water and less hot water to get a lukewarm temperature. This can reduce your flow rate near or below the minimum flow rate.
Here's a test for you, try running running a sink while taking your next shower. If the hot water remains mostly constant throughout, then your problem is with flow at the showerhead. The flow at a shower head can be reduced by buildup of scale and sediment. Also all showerheads have a flow restrictor that limits flow to 2.5gpm (some even less). Removing the restrictor will increase the showerhead flow rate as well.
Also look for any error code displayed on the digital read out of the heater. Some heaters will flash on their burner indicate light as well.

Aug 17, 2009 | Water Heaters

1 Answer

Control of water temp is finicky, and requires higher water flow to trigger the heater than in the past


Some tankless heaters have filters built into the machine. You might want to consult your owner's manual regarding the filter.
The minimum flow rate is hard programmed into a tankless heater; it won't be changing over time. You might want to check the aerators of your fixtures for buildup of sediment and scale.
The temperature control of Bosch units is always going to be crumby because they are cheap products. The only thing you can do to improve temperature stability is to increase water flow (de-scale fixtures and possibly remote flow restrictors)

Aug 15, 2009 | Bosch AquaStar Indoor Natural Gas Tankless...

1 Answer

Only goes on when I put hot water on full blast


hi, i expect the problem to be because the flow switch which activates the heater wont switch the heater on as it requires a certain amount of water to activate the flow switch & then bring it on.
It may also be thatthe sensor on the flow switch is scaled up so it needs a greater flow to keep the heater running?
Sensor or flow switch may need replacing.

kindly

Richie

Dec 12, 2008 | Bosch PowerStar AE125 AE125 Whole House...

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