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I have an Ariston Classico STD 150. Now the night element has appeared to stop working however if I turn the day element on so just like an emersion heater I get hot water after its heated up.

Night element gives me constant hot water. I have changed the fuse in the wall switch and have checked all the wires and they all look connected as far as I can tell.

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The element needs replacing.

Posted on Feb 05, 2018


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Posted on Jan 02, 2017

  • 150 Answers

SOURCE: I am not getting any hot water, only cold water,

Sounds like the by-pass valve diaphragm. This valve detects that hot water is being drawn off at the tap and then diverts the mains input water across the heat exchanger. Very often it's the diaphragm inside the valve which is punctured or split.This can be replaced [depending on model] if you take apart the valve
. Remove the front panel and lower the control panel.The valve is at the bottom left of the boiler
Suggest turning off the service taps to the two heating pipes and the cold mains inlet pipes before tackling the valve

Posted on Mar 20, 2010

  • 59 Answers

SOURCE: heat works fine during the day at night it stops

Turn on the boiler and jump out the pressure by putting a wire between the 2 electric connections only after the unit fires up than put the jumper on, if it runs ok it is the pressure switch.

Posted on Jul 23, 2010

SOURCE: I have a GE hot water heater, SE40M12AA01, dual

1) You posted under Rheem-GE electric water heater.
If upper element is burned out, then water heater will not heat any water.

2) Replace upper element:

3) Open following link for complete troubleshoot:
This troubleshoot assumes you have standard thermostats and elements.

4) Manuals and links. I do not see 'smart lights' in the manual.
Troubleshooting starts page 15.

5) Add a comment with your experience so other with same-similar problem can benefit.

Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Posted on Mar 26, 2011

  • 5245 Answers

SOURCE: I have an 80 gallon Rheem Hot water heater #81V80D A. In the last 5 days it stopped heating water after 6PM. I have hot water all day, but none at night. What do you suggest?

1) I bet the water heater has hot water, but hot does not arrive at tap because of bad faucet cartridge or bad recirculation system check valve

2) When cold water arrives at tap, go check if water heater has hot water. Then do the crossover test. Then add comment and say what you discover

3) Electric water heaters can be repaired by homeowner using generic off-the-shelf parts from local hardware store.

Posted on Feb 19, 2013

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My ariston 80L water heater not heating water anymore, what's wrong?

You need to replace the heating element or sometimes they have two heading elements. Make sure you turn off the breaker, drain the water, before you remove elements....Do NOT turn breaker back on until water tank is filled with water.

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Copy following link for Ariston water heater resources including manuals, parts and troubleshoot:
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Bosch GL4ti Ariston water heater - have no hot water is it worth fixing or should I replace? Also, is the reset button different from the on/off switch?

Check if unit has power to the plug. If so, could be bad heater element or bad thermostat. Also could be reset button on thermostat and yes, the reset button is different from on/off switch. Element about $38, thermostat about $30 from

Occasionally, the high temperature limit shut off device may trigger and shut the

system down. This occurs when water temperature exceeds 190° F and shuts off

power to the heating element. The shut off device may also trigger from a power

outage or electrical storm.

To reach the thermostat:

1. Pry off the round cover plate (V Fig. 3/1) from its right hand edge (W Fig. 3/1) with

a small flat-head screwdriver.

2. Remove the Phillips screw revealed beneath the round cover plate.

3. The cover (C Fig. 3/1) can now be removed by pulling out its left-hand edge. When

reassembling, work in the opposite way being careful to insert the tongue of the

cover into the slot.

4. Firmly press reset button (B Fig. 4). Reconnect power.

5. IMPORTANT: Check the operation of the thermostat, turn temperature dial from

high to low, if the red light does not go off on low setting, turn off power supply and

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6. If the system works, place dial setting to desired setting. Note: a lower setting is

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CAUTION: Call a technician if the high limit needs to be reset frequently. has the Ariston repair parts that you need.
ariston-gl2546components.png Diagram # Model # Description Price & Quantity 2 570241 Anode Rod for GL6 and GL8Ti $13.99 2 574305 New Style Anode Rod for GL2.5 and 4.0 $12.95 3 994147 Element Gasket $11.95 4 994140 Element Locknut - 4 Each Req. Per Element - sold each $2.99 5 994103 Element for GL2.5 and GL4.0 $37.95 5 994104 Element for GL6 $39.97 11 65105602
old #994062 Thermostat for GL2.5 and GL4.0 $29.52 11 65150322
old #994102 Thermostat for GL6 $32.57 GL25-4KIT Element, Element Gasket and Anode Rod Kit - For GL2.5Ti & GL4.0Ti $47.65 GL6-8KIT Element, Element Gasket and Anode Rod Kit - For GL6 & GL8Ti $48.65 Note: If you don't see your number unfortunately it is no longer available

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Bosch PowerStar125 won't heat and I can't get one element to work

It sounds like you have a copper canister unit. Ohm out the elements in that one canister. the directions are on the websight for bosch, or I can walk you through it. But you will need a digital multimeter to do this. If you have a blown element in that one canister, then the tco will not reset.

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