Ariston clas HE error code 504 comes on ? we then reset

SOURCE: The hot water will not come on intermitently. I

if your on a private well, it sounds as though your loosing enough water pressure to shut the heater off,.(which is right before the water pump comes on),....tankless heaters turn on by sensing water flow, and of course off when flo stops,......water pressure tanks often need to be re-charged with air for pressure to stay even,....does your water pressure fluctuate?

SOURCE: My gl4 ariston the only way it will heat water is

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

call a service person to replace the thermostat.

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

more economical and reduces the risk of scalding. Replace cover plate.
CAUTION: Call a technician if the high limit needs to be reset frequently.

SOURCE: Bosch GL4ti Ariston water heater - have no hot

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 www.plumbingsupply.com

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

call a service person to replace the thermostat.

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

more economical and reduces the risk of scalding. Replace cover plate.
CAUTION: Call a technician if the high limit needs to be reset frequently.

PlumbingSupply.com has the Ariston repair parts that you need.
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

SOURCE: getting A2 code and hot water shuts off. We do a

Thanks for stopping by:

A2 error on your Bosch water heater means "Fault in the flue gas limiter"

This can be caused by several things:
The gasket on the flue gas collector may be dislodged/leaking.
Check/Remove/Reseat the gasket.
It will not reset until about a two hour cool down.

Also - check the overheat sensor fuse wire - it may have gotten hot and melted the jacket and/or been dis-colored.

Finally - there is a retrofit kit "repair" that can be obtained by calling them directly.

1-800-642-3111 and request the "FLUE GAS LIMITER RETROFIT", Part NO. 8-700-400-032. This should solve many error code situations and get you on your way again.


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