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Nuos Plus Wi-Fi - Manual UK

  • Text
  • Storage
  • Cylinder
  • Sustainability
  • Renewables
  • Air source
  • Heat pump
  • Hot water
  • Water heater
  • Nuos plus
  • Manual
  • Nuos
  • Electrical
  • Heater
  • Installation
  • Heating
  • Appliance

ROUTINE MAINTENANCE

ROUTINE MAINTENANCE Partial obstruction of the evaporator filter causes a reduction in product performance. We therefore recommend cleaning the filter to remove any dust or obstructions at least once a year. REMOVAL PROCEDURE FOR INSPECTION Refer to picture below 1. Isolate mains electrical supply to the product by switching off and removing fuse. 2. Unscrew 4 screws (A) and remove cover (B). 3. Disconnect wires and withdraw heating element (C). 4. Replace element and refit, ensure wires are connected correctly. To descale flange (F) or to replace the magnesium anode the flange (F) has to be removed by removing 6 bolts E, this requires draining the cylinder (see paragraph Draining the appliance). The filter can be extracted using the appropriate clip above the casings. Clean the filter with water and mild soap. Verify that the external terminal of the air exhaust duct, and the duct itself, are not obstructed or have not deteriorated. Ensure that the condensate water runs out in a suitable drain and make sure the discharge is made without hindrance. - Check and clean ducting and grills. Verify that the external terminal of the air exhaust duct, and the duct itself, are not obstructed or have not deteriorated. - Ensure that the condensate water runs out in a suitable drain and make sure the discharge is made without hindrance. - Check operation of the electric heater element. - Check anode every year and replace as required depending on its deterioration (see paragraph "Removing & replacing electric heater element") - Inspect the inside of the cylinder (see paragraph Internal Cylinder Inspection) - With the water supply turned off remove the strainer from the combination valve and clean off any debris and rinse in water. - Expansion vessel: with the water supply turned off and taps open, check the expansion vessel pressure and top us as necessary. - Cylinder TPRV: check its operation with the supply water on, turn the TPRV test knob and check water discharges to tundish, ensure the valve closes after testing. - Combination valve PRV: check its operation with the supply water on, turn the PRV test knob and check water discharges to tundish, ensure the valve closes after testing. - Discharge pipe (D1): open either TPRV or PRV gradually to produce a full bore discharge into bundish and D2 and check there is no back pressure and that the water flows freely to drain. - Pressure Reducing Valve (PRV): check that the correct outlet pressure is being maintained by measuring the pressure at an in-line terminal fitting e.g. a tap. ROUTINE MAINTENANCE PERFORMED BY USERS It is advisable to rinse out the appliance after each routine or extraordinary maintenance intervention. The pressure safety device must be operated regularly to verify that it is not clogged and to remove any limescale deposits. Check that the condensate drainage pipe is not obstructed. WATER HEATER DISPOSAL The appliance contains refrigerant gas which must not be released into the atmosphere. In case of permanent decommissioning of the water heater, ensure that disposal procedures are carried out by qualified personnel only. REMOVING & REPLACING ELECTRIC HEATER ELEMENT In the event of the electric heater failing or to replace its anode, the electric heater has to be removed from the Nuos Plus. Only replace with Ariston spare parts. CAUTION: Removing flange screws (E) will release the stored water. Internal Cylinder Inspection To inspect the inside of the cylinder remove flange (F) by undoing 6 bolts (E), this requires draining the cylinder (see paragraph Draining the appliance). Water heater disposal The appliance contains R134a-type refrigerant gas which must not be released into the atmosphere. In case of permanent decommissioning of the water heater, ensure that disposal procedures are carried out by qualified personnel only. This product conforms to WEEE Directive 2012/19/EU. The barred bin symbol on the appliance and its packaging indicates that the product must be scrapped separately from other waste at the end of its service life. The user must therefore hand the equipment over to a sorted waste disposal facility for electro-technical and electronic equipment at the end of its service life. Alternatively, the equipment may be returned to the retailer at the time of purchase of a new equivalent type of appliance. Electronic equipment of size less than 25 cm can be handed over to any electronics equipment retailer whose sales area is at least 400 m2 for disposal free of charge and without any obligation to purchase new product. Sorted waste collection for recycling, treatment and environmentally compatible scrapping contributes to the prevention of damage to the environment and promotes reuse/recycling. For more detailed information on the collection systems available, contact the local waste disposal service or the shop where the product was purchased. The appliance is not provided with rechargeable batteries, but if you use them they must be removed and put into a specific container before disposing of the appliance. The batteries seat is behind the front frame. 24 /EN

TROUBLESHOOTING PROBLEM POSSIBLE CAUSE WHAT TO DO The water delivered is cold or insufficiently hot The water is boiling (with possible steam on the taps) Reduced operation of the heat pump, electrical heating element is in almost continuous operation Insufficient hot water flow Water leaking from the pressure safety device Increased noise level Problems with viewing the display or the display turning off A bad odour is coming from the product Abnormal or excessive consumption than expected Other Temperature setting is low Machine malfunctioning No electrical connection, wires disconnected or damaged HC/HP signal missing (if the product is installed with EDF signal cable) Malfunctioning of the timer for the two-tier rate (if the product is installed with this configuration) Insufficient air flow to the evaporator Product is switched OFF Use of a significant amount of Sensor error High level of limescale build-up in the boiler and components Sensor error “Time W” value too low Installation performed with non-compliant electricity power supply (voltage too low) Evaporator obstructed or frozen Problems with the heat pump circuit 8 days have not passed yet since: - Initial start-up - Time W parameter change. - Power failure. Leaks or obstructions in the hydraulic circuit It is normal for some water to drip from the device during the heating phase Presence of an internal obstruction Some components are vibrating Failure or electrical connection problems between the motherboard and the interface PCB Power failure No siphon or siphon is empty Leaks or partial obstruction in the refrigerant gas circuit Unfavourable environmental or installation conditions Evaporator is partially obstructed Non-compliant installation Raise the water temperature setting Check for errors on the display and follow the instructions on the “Errors” table Check the voltage on the power terminals, check the condition of the wires and connections To check the operation of the product start the “Boost” mode; if the outcome is positive check the presence of the HC/HP signal from the meter and check that the EDF cabling is intact Check the operation of the day/night meter and that the set time is sufficient to heat the water Clean the grilles and ducts regularly Check the mains power supply. Switch the product ON hot water when the product is in heating phase Check for NTC errors, even occasional ones. Unplug the power supply, empty the appliance, remove the heating element sheath and clean the limescale from the inside of the boiler, taking care not to damage the enamel on the boiler and the heating element sheath. Reassemble the product in its original configuration. We recommend replacing the flange gasket. Check for NTC errors, even occasional ones. Set a lower temperature parameter or a higher “Time W” parameter Power the product with the correct voltage Make sure that the evaporator is clean Check the display for error messages wait 8 days Check the circuit for leaks, check the condition of the deflector on the inlet cold water pipe and the integrity of the delivery hot water pipe To prevent water from dripping, an expansion vessel must be installed on the delivery system. If the leak continues even after the heating phase, check the calibration of the device and the mains water pressure. Warning: Never obstruct the device’s discharge outlet! Check the moving components of the unit, clean the fan and other moving parts which could cause noise Check the components connected using mobile clamps, ensuring the screws are well tightened Check the connection status and the correct operation of the PCBs. Check the power supply Install a siphon. Ensure it contains the necessary amount of water Switch the product ON in heat pump mode, use a leak detector for the specific type of gas to ensure there are no leaks Check the condition of the evaporator, grille and conduits to ensure they are clean Contact technical assistance 25 / EN

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