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Bosh flow through hot water heater. no longer heats well. have had to turn down water pressure to get sufficient hot water.

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  • grand_prix_4 Dec 21, 2008

    Two winters so far when wind blows between house snow and cold air goes into vent and causes error msg EA...no hot water... and no pilot light shut system down cleaned ice and snow from vent what I could... put a plywood tent on side of house..to block snow from blowing into vents...from side....now can't get pilot light to turn on...unlplugged reset...nothing and no plumber around to come check it.its only two years old replaced with another last year since pipe frozed up and water in basement...go figure...on a weekend.....no hotwater...cold water only....so how do i get the pilot light to start?...have snow melted from vent I think this needs a better venting solution...u think? and I am a women..logics...lol..

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Before the shower is due the water is ice cold or scalding hot the temp is set for 120 but gets up to 160

Posted on Aug 22, 2008

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Where is reset on titan tankless water heater n160/


You have a potentially lethal mix of water and eledtricity. The only SAFE option is to call a QUALIFIED TECHNICIAN.

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Re: Bosch Highflow Water Heater - model YS2433R. Hot water runs for 1-2 mintues and then turns cold. Burners turn off. Display flashes "14" (error?). Started when winter set in. Ph. 64 4 5666948


hi there,

have you gone checking the unit... first check the thermostat switch, and also the fan blower fuse/resistor.. It could be one of those is not functioning well now...

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On our AE125, the thermal cut-off is tripping AFTER the water is turned off. The heating element is getting so hot you cannot touch it


The elements are getting over heated then set temperature.You have a defective thermostat. The elements will continue to heat until they reach the set point of the thermostat. Try to lower the temp setting first. If that does not fix it, you'll need to repalce the thermostat, located very near the element, under the screwed cover on the side of the tank.------------- To know how this heater works, read as follows:---

Because electric tankless water heaters have to instantaneously raise the temperature of incoming water to a selected hot water temperature, they require very powerful heating elements. To power the heating elements of this 27,000 Watt model, you will need to upgrade the electrical service you were using for your storage tank water heater. The PowerStar AE125 will require a 240V, 200 Amp service. In addition you will need to install three 40 amp dedicated double pole breakers in your electrical box. In Canada, you will require one 120 Amp breaker.

The PowerStar AE125 electric tankless water heater incorporates a very sensitive flow sensor, and three heating elements. The heat from the electric elements is electronically modulated on the basis of the flow rate of the water entering the water heater, and the temperature rise that the water heater must achieve. Through its electronic modulation system, the AE125 maintains a very precise hot water temperature. As a safety precaution, each of the three heating modules is protected by an electro-mechanical thermal cut-out. This device will cut power to a particular module if the temperature gets too hot.

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This will help.Thanks.Helpmech.

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2 Answers

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1 Answer

I have Rinnai R53 tankless water heater which is about 5 year old. recently it has problem to keep water consistant warm. when I take shower , I feel water change from hot to cold antomatically. what is...


You are probably running a low flow shower head and have not had any maint. done on the unit. When the water flow is low and the unit is dirty it can't exchange enough heat to the water and this causes the heat exchanger to gradually increase in temp. The unit then shuts down to allow the heater to cool. This is an automatic reset high limit switch that will turn the burners back on automatically. This problem can be exasperated by 1/2 inch trunk lines. Call a hvac tech in your area to come and clean the unit. He should also be able to increase the draft inducer fan motor speed to allow more cooling of the heat exchanger.

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1 Answer

Rinnai infinity standing in the shower and it suddenly goes cold for a few seconds no other water been run in the house or it goes cold and goes to a trickle then comes on again. Could the heat ex changer...


We are a bit confused by the device that you are using to heat the Hot water with- Is it an instantaneous HW heater?--
They are pressure sensitive-- Could it be, that your water pressure drops momentarily, (which causes the instantaneous heater to shut down its flame-- and you get a pulse of Cold water.)

If your hot water is a tank-- It is possible that something is cycling your hot water away-- like rinse pulses on the Washing machine)-- or your dishwasher?

Tell us more about the Rinnal Air Conditioners and what they have to do with Hot water and your SHower?

Tell us more-

Mack B

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Looks like your recirculation pump might be bad. If your opening a valve close enough to the heater and it comes on, It sounds like it's giving your pressure switch a false reading and allowing it to come one while the farther away you get, it is not enough line pressure to overcome the safety's of the heater.

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1 Answer

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1 Answer

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foyeb

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