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jayp Posted on Oct 28, 2014

Only cold water coming from Grohtherm wireless 36023

I have a Grohtherm wireless 36023 it is connected up to my high pressure pump and it has stopped supplying hot water...the water comes out at a high pressure but it freezing cold the white box which the pipes are connected to leaks water from the hot water pipe area...any ideas?

1 Answer

Ken

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  • Contributor 42 Answers
  • Posted on Nov 04, 2014
Ken
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Joined: Jul 25, 2011
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There are multiple possibilities:
- the power to the main control could be off (seems unlikely if you can turn the water flow on and off)
- the thermal element that heats the water could be burned out (may not be a problem if this is only a mixer unit and relies on external hot water supply)
- there could be a problem with the solenoid that opens to allow hot water to flow through the unit
- there could be either no hot water getting to the unit or blockage so that hot water will not flow through to the mixer

Start by making sure there is power. Then you may need to disconnect the hot water supply (after turning it off at the source) and then check to see that hot water will flow. If you get hot water to the unit then there is something internal keeping the hot water from mixing with the cold.

5 Related Answers

Anonymous

  • 49 Answers
  • Posted on Feb 21, 2009

SOURCE: WATER RUNS COLD

ITsounds like you still have air in your lines try bleeding lines out some times it takes a while .or your getting air in lines some where try looking at the boiler at fittings .

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Anonymous

  • 56 Answers
  • Posted on May 19, 2009

SOURCE: Shower will not get hot enough

i have no experience in fixing showers however mine once did this when i remodeled my bathroom so i called one of the guys that was workin on it and he told me that he had takin something out what looked like a gasket and said it was a scald preventer and from then on my shower has been fine hope this helped

Anonymous

  • 146 Answers
  • Posted on Jun 26, 2009

SOURCE: Danze pressure balance single handle shower faucet

it the valve is full of dirt or needs to replaced not all the time but i have fix many buy just cleaning it out or pipes are fasten down. try just cleaning.

Greg Mills

  • 497 Answers
  • Posted on Nov 06, 2009

SOURCE: no hot water

When you adjust the dial to mix the hot and cold for your desired liking, it goes into a mixing chamber before going to the shower head, im asumming your issue is within the mixing chamber.

john h

  • 29494 Answers
  • Posted on Feb 15, 2010

SOURCE: hot water pipe hot going into mira shower but no

need to adjust the anti-scald [protection] new systems are shipped in cold position and u adjust it to ur comfort

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tip

Winterizing your Pressure Washer

Once again it's that time of year to get your pressure washer prepared for the cold months ahead. Proper winterization will protect your pump from the freezing of excess water in the pump over the winter. There are many ways to winterize your pump; we like to classify it as the good, better and best.<br /> <br /> Good: (Gasoline powered) Leaving your machine in the off position with the high pressure hose disconnected pull the recoil rope 4 to 5 times or until you don't see any more water coming out of the high pressure end of the pump. (Electric powered) Disconnect your high pressure hose, turn the machine on for 5 to 10 seconds or until you don't see any more water coming from the high pressure end of the pump.<br /> Better: If you have a air compressor around the house, hook the air line to the garden hose end of the pump and blow the water out until you don't see any more water coming out of the high pressure end of the pump.<br /> Best: Purchase Karcher's Pump Guard, follow the simple directions that come with the product. This product is specially formulated to keep your pump from freezing, corrosion, premature wear, adds lubricant to the valves and seals to prevent sticking in the spring. You can usually get 2 or 3 uses from one bottle of Karcher's Pump Guard. <br /> <br /> <a href="http://www.wmpcs.com/blog/?p=63">Visit this link to read more</a>
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Shower will not get hot enough

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ITsounds like you still have air in your lines try bleeding lines out some times it takes a while .or your getting air in lines some where try looking at the boiler at fittings .
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