Ariston Appliance Repair in Three Bridges

What does error code 114 mean on an Ariston boiler?

Error code 114 on an Ariston boiler indicates the external outdoor temperature sensor has an open or short circuit. Switch off the boiler and contact a Gas Safe registered engineer to check the sensor connections or replace the sensor if necessary.

What does error code 9E5 mean on an Ariston heat pump?

Error code 9E5 on an Ariston heat pump (Nimbus series) indicates the high-pressure pressure switch has been triggered. This safety device activates when refrigerant pressure is too high. Switch off the heat pump and contact a qualified heat pump installer with F-Gas certification to diagnose the cause.

What does error code 103 mean on an Ariston boiler?

Error code 103 on an Ariston boiler indicates insufficient circulation - the water is heating too quickly. Switch off the boiler and check all radiator valves are open. Bleed any airlocks from the system. If the problem persists, contact a Gas Safe registered engineer.

What does error code 608 mean on an Ariston boiler?

Error code 608 on an Ariston boiler indicates the air pressure switch did not close when the fan turned on - the pressure switch is off while the fan is running. This is a combustion safety fault. Do not use the boiler. If you smell gas or fumes, do not operate any switches, ventilate the area if safe to do so, leave the property and call the Gas Emergency line from outside. Contact a Gas Safe registered engineer to check the pressure switch and fan.

What does error code E60, E90, E91 or E92 mean on an Ariston NUOS heat pump water heater?

Error codes E60, E90, E91 or E92 on an Ariston NUOS heat pump water heater indicate PCB software or electronic control errors. Try resetting the water heater by switching it off and on using the ON/OFF button. If the error persists, contact a qualified installer as the control board may need replacement.

How do I repressurise my Ariston boiler?

Switch off the boiler and let it cool for 4-6 hours. Locate the filling loop (usually a silver braided hose beneath the boiler), ensure valves are closed, then slowly open the valves to allow water into the system while watching the pressure gauge. Close the valves when pressure reaches 1-1.5 bar. If your boiler repeatedly loses pressure, this indicates a leak or faulty component. Do not continuously repressurise without investigating the cause. Contact a Gas Safe registered engineer to diagnose and fix the underlying issue.

How do I maintain my Ariston electric water heater?

Perform regular descaling to prevent limescale buildup, especially in hard water areas. Consult your instruction manual for specific maintenance procedures and always contact professional support when needed.

What does error code 604 mean on my Ariston boiler?

Error code 604 indicates the fan is not turning at the correct speed. This is a serious safety issue as the fan cannot properly expel combustion gases including carbon monoxide. Do not use the boiler until it has been inspected and repaired by a Gas Safe registered engineer. If you experience headaches, dizziness, or nausea, ventilate the area immediately and seek medical attention.

What is the ideal pressure for my Ariston boiler?

The ideal boiler pressure is typically between 1 and 1.5 bar. You can check the pressure by looking at the pressure gauge on your boiler; the needle should sit within the green zone.

What is the Shower Ready function on my Ariston Velis Evo?

The Shower Ready function is an intelligent feature that minimises water heating time. Regardless of your temperature setting, the shower ready symbol illuminates when there is enough hot water for at least one shower (40 litres of mixed water at 40°C). This helps you know when hot water is available without waiting for the full tank to heat.