Ariston GL 2.5 & GL 4 Water Heater Troubleshooting Guide

Changing the heating element

1.Turn off power supply and drain the heater (see Draining the Heater).

2.Remove the heating element (see section on Removing the Heating Element).

3.Install new element with gasket, making sure the gasket and element are positioned correctly. Tighten the retaining nuts and make the wire connections.

4.Refill tank with water before restoring power.

Changing	1. Turn off power supply.
the	2.	Disconnect the 2 push/pull type wires on thermostat.
thermostat	3.	Loosen the two brass screws at right side of thermostat and pull wires out.
	4.	Unscrew and remove the two phillips screws holding the thermostat down.
	5.	Install new thermostat and re-attach wiring and screws.

Resetting

High Limit

Switch

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.

Troubleshooting

Water does not get hot

1.Make sure the power supply is on and working.

2.If light does not come on, check that the reset button is pushed in; follow steps from previous section.

3.If the indicator light works properly but temperature does not get hot a tap, test for a plumbing crossover; shut off cold supply to heater and open hot water tap. There should be no water flowing. Any continued flow indicates a crossover which will effect the temperature and will need to be corrected.

4.Replace heating element (see previous section on changing the heating element).

Light not on

Brown water

Odor in water

Water is too hot

Water not hot enough

Leaking

1.If the light does not come on, but water gets hot, check for faulty bulb.

2.Check reset button; follow steps from previous section.

1. Brown or rusty water indicates a “spent” anode rod. Replace anode rod.

1.Smelly water could be due to an unusual reaction between local water and the heater’s anode rod. Check anode rod (see section on changing the anode rod).

1.Remove cover plate and turn the temperature selector dial (D Fig. 4) counter clockwise to lower temperature. If temperature never lowers then replace thermostat. (see section on changing the thermostat).

1.Under Instructions for Use see Temperature Setting instruction.

1.Check water fittings and T & P fitting on top of tank.

2.Remove front cover and inspect heating element gasket.

GL 2.5, GL 4 specifications

The Ariston GL series, comprising models GL 2.5, GL 4, and GL 6+, is designed to provide efficient and reliable water heating solutions for both residential and commercial applications. Each model comes equipped with advanced features and technologies, ensuring optimal performance, energy efficiency, and user convenience.

The Ariston GL 2.5 is a compact and versatile water heater perfect for smaller households or facilities. With a capacity of 2.5 liters, it is ideal for applications requiring quick access to hot water, such as handwashing or kitchen use. One of its standout features is the high-quality insulation that helps to maintain the water temperature, significantly reducing energy consumption. The model also boasts a user-friendly interface with easy-to-adjust temperature settings, allowing users to customize their experience.

Moving up to the GL 4, this model offers a larger capacity of 4 liters, making it suitable for slightly larger households or lighter commercial uses. It retains the same energy-efficient technology as the GL 2.5, with enhanced insulation properties and a robust heating element that ensures rapid water heating. The GL 4 is also equipped with multiple safety features, including overheat protection and a thermal fuse, to guarantee safe operation. Its compact design allows for flexible installation options, making it a great fit for tight spaces or under sinks.

The Ariston GL 6+ takes water heating a notch higher with a capacity of 6 liters. This model is tailored for larger families or environments where hot water demand is higher. The GL 6+ emphasizes energy efficiency, utilizing advanced heating technology that minimizes electricity consumption while maximizing output. It features a digital control panel that provides precise temperature management, enabling efficient energy use without sacrificing comfort. In addition, this model includes integrated smart technology, allowing users to monitor and control water heating remotely via a mobile app.

All models in the GL series feature a durable build, made from high-quality materials that ensure longevity and resistance to corrosion. The sleek design complements modern interiors, while their lightweight nature makes installation straightforward. In summary, the Ariston GL 2.5, GL 4, and GL 6+ present an ideal solution for those seeking reliable, energy-efficient, and user-friendly water heaters, catering to various needs without compromising performance.

Ariston Comprehensive Troubleshooting Guide for Water Heaters

Models: GL 2.5 GL 4