20 Most Recent Bosch Ariston GL4 GL4 Point-of-Use Electric Mini-Tank Water Heater Questions & Answers

It would be on the thermostats.

http://waterheatertimer.org/Replace-anode-rod.html#ariston Gene If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Get a multimeter and check power first. If you have power going into the water heater, proceded to replaced the heating element. The replacement can only be done by empting the tank and turning the brakers off. Good Luck!

Buy new water heater.The tank is rusted out.http://waterheatertimer.org/How-to-install-under-counter-water-heater.html If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Rusted water usually means anode rod depleted and tank is rusting. Change 570241 anode rod every year or so.
Boiling water could mean bad thermostat causing run-away heating so water is released out of TP valve. Replace 994062 thermostat for 4 gallon.
Leaking water at TP valve could mean bad TP valve: replace TP valve with generic valve from hardware store.
Open link for diagram, parts and replacement information
http://waterheatertimer.org/pdf/Bosch-GL_English.pdf

http://www.globaltowne.com/product_info.php/products_id/428

1) Dirty water implies degraded metal inside unit:
The anode rod protects metal parts. Once anode is depleted, metal parts react with water.

2) Open following troubleshoot pdf showing Ariston parts
http://waterheatertimer.org/pdf/How-to-Troubleshoot-Bosch-Ariston-Water-Heater.pdf

3) Ariston manual: Read manual cover to cover, make sure water heater receives yearly maintenance as outline in manual.
http://waterheatertimer.org/pdf/Bosch-GL_English.pdf

4) Information on anode rods
http://waterheatertimer.org/Replace-anode-rod.html

5) For Bosch gas and electric tankless: Open following link for troubleshooting resources, including Bosch contact information, typical manuals, error codes, tech support, parts, fuel-saver calculator, service bulletins, water heater forum, fixya links, disclaimers, and links for finding service technician.
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

6) Add a comment with your experience so others 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.

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.

After installation check the water temperature. If adjustment is necessary, remove front

cover to adjust thermostat. Clockwise to increase the temperature and

counter clockwise to decrease it.

To reach the thermostat:

1. Pry off the round cover plate from its right hand edge with

a small flat-head screwdriver.
2. Remove the Phillips screw revealed beneath the round cover plate.

3. The cover 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.

is there a pet **** on the bottom under a plastic cap? you might have to take the cover off and I would recomend putting some boiler drains in the line for future draining,, all units of water heaters have drains and looking at the picture I see something sticking down on the bottom see if thats not the drain

Sounds like you're dealing with a pesky issue. It could be a technical glitch or just a setting hiccup. Have you tried resetting the timer or checking the settings? If that doesn't do the trick, it might be worth getting a professional to take a look.U can also check some info about alphamechanicals. They got my air conditioning installation in Orangevale, CA https://alphamechanicals.com/service-area/orangevale-hvac-service/ and as I know they has to know something about bosch devices

Losing pendant displays on cool to cold mornings with your Bosch Highflow 25 EC hot water heater could be caused by temperature-related issues affecting the display module. Cold temperatures can affect electronic components, causing them to malfunction. It's possible that there could be a loose connection, moisture buildup, or a fault in the display module itself. I'd recommend contacting Bosch customer support or a qualified technician to diagnose and fix the issue.

If your Bosch Highflow 21e hot water system is experiencing fluctuations in water temperature while showering, it could be caused by a few different factors. Here are some possible reasons for this issue:

1. Flow rate too high: The hot water system may not be able to keep up with the demand if the showerhead or tap is allowing too much water to flow through. This can cause the water temperature to drop suddenly. Try reducing the flow rate by turning down the tap or using a low-flow showerhead.
2. Water pressure fluctuations: If the water pressure in your home fluctuates, it can cause the hot water temperature to vary. This can be caused by various factors, such as other appliances using water at the same time, or changes in municipal water supply pressure. Installing a pressure regulator or a flow restrictor may help to stabilize water pressure.
3. Blocked or dirty water filter: A clogged or dirty water filter in the hot water system can restrict water flow, causing the water temperature to fluctuate. Check the filter and clean or replace it if necessary.
4. Malfunctioning thermostatic mixing valve: The thermostatic mixing valve (TMV) regulates the water temperature in the hot water system. If it's faulty or dirty, it can cause temperature fluctuations. A licensed plumber or technician can inspect the valve and replace it if necessary.
5. Faulty temperature sensor or control board: If the temperature sensor or control board in the hot water system is faulty, it may not be able to maintain a consistent water temperature. A technician can diagnose the issue and repair or replace the faulty component.

If you're unsure about how to diagnose or fix the issue with your hot water system, it's best to contact a licensed plumber or technician for assistance.

The Bosch JSRZ 5-T PG tankless gas water heater may not start automatically because of problems with the magnetic sensor valve, power supply, or control unit/thermostat. Possible troubleshooting steps are:

• inspect the water inlet valve and replace if faulty
• confirm that power to the unit is functioning
• if the problem continues, seek professional repair service.

Do you live in a climate where the hot water line could have frozen? If your heater did freeze up, that could be very bad. This is because water actually expands when it freezes and can do a lot of damage to pipes and to the water heater itself. My other thought is possibly a clogged in line water filter. But typically a clogged water filter would make it run with reduced pressure rather than a complete shutdown all water flow.

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