Ariston Repair Service in Ladybrook and Bull Farm

What does error code 950 or 951 mean on an Ariston heat pump?

Error codes 950 or 951 on an Ariston heat pump (Nimbus series) indicate a compressor delivery sensor error or TD sensor fault. Switch off the heat pump and contact a qualified heat pump installer to check the compressor temperature sensors.

What does error code 108 mean on an Ariston boiler?

Error code 108 on an Ariston boiler indicates low water pressure in the heating circuit. Check the pressure gauge and repressurise the system using the filling loop until it reads between 1.0 and 1.5 bar. If pressure keeps dropping, this may indicate a leak - contact a Gas Safe registered engineer.

What does error code 802 mean on an Ariston boiler?

Error code 802 on an Ariston boiler indicates the automatic combustion calibration has failed. This is a combustion-related 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 combustion settings and gas valve.

What does error code 109 mean on an Ariston boiler?

Error code 109 on an Ariston boiler (Clas Net ONE, Clas ONE Combi, Clas System ONE models) indicates the system pressure exceeds 3 bar. With the boiler switched off, bleed a radiator to release some water and reduce pressure. If pressure remains high, contact a Gas Safe registered engineer to check the expansion vessel.

What does error code 1P1, 1P2, 1P3 or 1P4 mean on an Ariston boiler?

Error codes 1P1, 1P2, 1P3 or 1P4 on an Ariston boiler indicate insufficient circulation warnings at different stages. Switch off the boiler and check all radiator valves are open and there are no airlocks in the system. If the problem persists, contact a Gas Safe registered engineer as the pump or pipework may need attention.

How do I maintain the condensate drainage on my Ariston heat pump water heater?

Regularly verify that the condensate water runs out to a suitable drain without hindrance. Check that the condensate drainage pipe is not obstructed.

How do I drain my Ariston unvented cylinder?

Switch off electrical power to the cylinder. Turn off the cold water supply and close the hot water outlet valve. Connect a hose to the drain cock at the bottom of the cylinder and place the other end in a suitable drain or basin. Open the drain cock and then open the temperature and pressure relief valve to allow air into the cylinder and enable draining.

What do the flashing LED lights mean on my Ariston Velis Evo water heater?

When all LEDs flash simultaneously, the Velis Evo has entered fault status. Press the ON-OFF and MINUS buttons together for 3 seconds to enter diagnostic mode. LED 1 flashing indicates a circuit board fault. LED 3 indicates a broken temperature probe. LED 5 indicates excessive water temperature. LEDs 3 and 4 together indicate heating element failure. LEDs 3, 4 and 5 indicate overheating from lack of water. Switch off the water heater and contact a qualified technician.

Why won't my Ariston boiler connect to the app?

First ensure the boiler's Wi-Fi module is enabled in the Connectivity Settings menu. Restart both the boiler and your router. Check your network uses 2.4 GHz frequency as 5 GHz networks are not compatible. Verify the Ariston NET app has permission to access Wi-Fi in your phone settings. If issues persist, check for firmware updates in the app.

How do I drain my Ariston Nuos heat pump water heater?

Turn off power to ensure the unit is not operated when empty. Turn off the cold water supply, shut off the hot water feed, connect a hose to the drain cock and place the other end in a sink or basin, then open the drain cock and the temperature/pressure relief valve to vent the cylinder.