Table of Contents
Troubleshooting
Related Manuals for AAFIRST AA1000C
Summary of Contents for AAFIRST AA1000C
- Page 1 Service manual AA FIRST Counter Top Quality – Reliability – Integrity Models: AA1000C, AA1500VI AA First verified original instructions: EN version. T210088 Online AA1000C_AA1500VI service manual v1.00 Oct 2024 package...
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Page 2: Table Of Contents
SECTION 9 Troubleshooting ..........................22 9.1 Fault finding ..............................22 9.2 Troubleshooting table ..........................23 SECTION 10 Spare parts .............................24 10.1 AA1000C Spare Parts ...........................24 10.2 AA1500VI Spare Parts ..........................26 SECTION 11 Wiring diagrams ..........................28 11.1 Wiring diagram for all models ........................28 Contact details ..............................29... -
Page 3: Section 1 Before You Start
Before you start Read and use the instructions supplied with individual kit components to understand the product and to ensure a safe installation and servicing. This manual is also available at our website https://www.aafirst.co.uk/ Explanation of symbols Read the WARNING... -
Page 4: Section 2 Important Safety Instructions
SECTION 2 IMPORTANT SAFETY INSTRUCTIONS Compliance In the UK the system must be installed and maintained in accordance with water supply byelaws, current IEEE regulations and local authority byelaws. Safety This appliance is not intended for use by children under 8 years or persons (including children under 8 years) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use of the appliance by a person respon- sible for their safety. -
Page 5: Section 3 Warnings & Regulatory Information
SECTION 3 WARNINGS & REGULATORY INFORMATION • FOR CONTINUED SAFETY OF THIS APPLIANCE IT MUST BE INSTALLED, OPERATED AND MAINTAINED IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS. • The appliance must be earthed, earthing is provided via the power cable. The resistance of the earth connection to each exposed metal part must be less than 1Ω. - Page 6 SECTION 3 WARNINGS & REGULATORY INFORMATION the overflow to a safe outlet. • To meet WRAS installation requirements, an approved single-check valve providing back-flow prevention protection, should be fitted at the point of connection between the water supply and the appliance.
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Page 7: Section 4 Technical Data
SECTION 4 Technical data 4.1 Technical data table Model Unit AA1000C AA1500VI Width Depth inc. drip tray Height Tap clearance Supply voltage 230V 50Hz AC Power rating Power supply required Single phase Fill type Automatic Capacity Rapid draw off Weight (empty) 13.2... -
Page 8: Section 5 General Product Description
SECTION 5 General product description 5.1 Introduction This manual has been designed to be a guide for service engineers. It includes descriptions of all serviceable parts and an exploded drawing of a complete appliance, sub- assemblies and wiring diagrams. Units are inspected and tested in accordance with the manufacturers ISO9001 Quality Management System and ISO14001 Environmental Management System. -
Page 9: Section 7 Servicing The Internal Components
SECTION 7 Servicing the internal components 7.1 Removing the access covers Fabricated metal edges, and limescale deposits can be sharp. Wear appropriate PPE. Covers Do not remove the cover of the appliance under any circumstances without first isolating it from the power supply •... -
Page 10: The Sensing Probes
SECTION 7 Servicing the internal components 7.2 The sensing probes • Sensing probes are used to detect the presence of water within the tank (5-13 second response time), using a small electrical current to make a circuit via the water. They are made-up from a PTFE insulator with a stainless steel rod through the centre. -
Page 11: The Thermistor (Thermal Resistor)
SECTION 7 Servicing the internal components 7.3 The thermistor (thermal resistor) • The thermistor is an electronic device used in place of a thermostat, to measure the temperature of water. It is constructed using a thermally sensitive resistor which exhibits changes in electrical resistance with even a slight change in water temperature, making it extremely accurate (+/- 1.2 degrees Celsius). -
Page 12: Heating Element
1/4”BSP brass lock-nuts. Element Element rating • XEN200 3.0kW 240V Heating element for models AA1000C, AA1500. Element Resistance • XEN200 (3.0kW) : 18-19 Ω. Element removal and replacement Fabricated metal edges, and limescale deposits can be sharp. -
Page 13: Boil-Dry Protection
SECTION 7 Servicing the internal components 7.5 Boil-dry Protection • Each element has a brazed “hot-return” fitting, which accepts a stud-mounted thermal cut-out. • If the element overheats (boil-dry situation etc,), the thermal switch picks up the rise in temperature Boil dry protection and breaks the live supply to the heater. -
Page 14: Over Boil Protection (Air-Vent)
SECTION 7 Servicing the internal components 7.6 Over boil protection (air-vent) • The appliance has a pair of thermal cut-out switches situated on the air vent. Their function is to protect the appliance in the event of an over-boil situation arising - the thermal switch will cut power to the element. -
Page 15: The Triac
SECTION 7 Servicing the internal components 7.7 The Triac • The triac is a device used to switch the heating element on via a control signal from the PCB The triac generates heat, which has to be dissipated. This is done by bolting it to the wiring tray using heat-sink compound between the surface of the triac and the aluminium tray. -
Page 16: Printed Circuit Boards
SECTION 7 Servicing the internal components 7.8 Printed circuit boards Main PCB (XE150) • Located in the base of the appliance on a vertical wiring tray under the tank. The PCB controls the main functions of the appliance, monitoring the water level, water temperature, water supply etc. Main PCB (XE150) removal and replacement Fabricated metal edges, and limescale deposits can be sharp. -
Page 17: Solenoid Valve
SECTION 7 Servicing the internal components 7.9 Solenoid valve • The cold-water inlet valve can operate between 0.2 -0.7 MPa (2 bar and 7bar) mains pressure. It contains a 2-litre per minute restrictor to control the incoming water flow. If a valve without this restrictor is used, it could cause the temperature to be lower than expected. -
Page 18: The Storage Tank
SECTION 7 Servicing the internal components 7.10 The storage tank • The tank lid is secured using four x M4 stainless steel screws and is sealed with a silicone rubber gasket. Silicone sealant secures the gasket to the tank. The tank body and lid are made from type-304 stainless steel while the internal baffle plates are made from type-316 stainless steel (type-316 is more resistant to the corrosive properties and minerals found in some mains water supplies in specific parts of the UK). -
Page 19: Scaling (Including Cleaning Probes)
SECTION 7 Servicing the internal components 7.11 De-scaling (including cleaning probes) • Common problem: Hard-water in some parts of the UK will usually result in a build-up of lime-scale within the tank. This can lead to a variety of different problems: •... -
Page 20: Silicone Tubes & Gaskets
SECTION 7 Servicing the internal components 7.12 Silicone Tubes & Gaskets • All the silicone tubes and gaskets used on products are produced from Platinum Cured Silicone which is widely used in the medical field. • Although this silicone is WRAS Approved and fit for potable water, steam attacks it and after a period of time can degrade the silicone and make it brittle. -
Page 21: Section 8 Safety Testing
SECTION 8 Safety testing 8.1 Earth continuity test One probe connected All accessible metal parts must to the mains cable be earthed. earth wire / pin One probe • Following service work, the earth continuity connected must be checked. Use an insulation tester, to chassis appliance tester, DMM or continuity tester with an accuracy of Class 5 or better (±5% at... -
Page 22: Section 9 Troubleshooting
SECTION 9 Troubleshooting 9.1 Fault finding This section contains a list of faults and causes that the appliance may encounter. Boiler problem Possible cause Dead • Thermal cut-out tripped - See over boiling. (Red L.E.D. on, but appliance dead in all other respects) P.C.B. faulty - (transformer). •... -
Page 23: Troubleshooting Table
SECTION 9 Troubleshooting 9.2 Troubleshooting table Status indicator Possible causes Action Flashing green The bottom probe is scaled up. De-scale appliance. Flashing orange Water turned off. Check water supply and Inlet hose kinked or bent. stop-cock. Low in-coming water pressure. Check in-coming water is at minimum of 0.2MPa. -
Page 24: Section 10 Spare Parts
SECTION 10 Spare parts 10.1 AA1000C Spare Parts Listed items Item Desc ETP15BSP Draw-off tap ETP2CSP Chromed Tap Nut ETP6CSP Chromed Tap Extension EC200SMSP Plastic switch moulding XE650SP ON/OFF Switch D207SP Rubber Feet XE851SP Triac – 25A SOL9SP Solenoid valve... - Page 25 SECTION 10 Spare parts 10.1 AA1000C Spare Parts continued 26 - WATER TANK INLET 27 - 28 BAFFLE PLATES BACK PANEL AA FIRST WIRING TRAY AA1000-C D78/AA T210088 Online AA1000C_AA1500VI service manual v1.00 Oct 2024 package...
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Page 26: Aa1500Vi Spare Parts
SECTION 10 Spare parts 10.2 AA1500VI Spare Parts Listed items Item Desc ETP15BSP Draw-off tap ETP2CSP Chromed Tap Nut ETP6CSP Chromed Tap Extension EC200SMSP Plastic switch moulding XE650SP ON/OFF Switch D207SP Rubber Feet XE851SP Triac – 25A SOL9SP Solenoid valve XETR7SP Over-boil thermal cut-out XETR6SP... - Page 27 SECTION 10 Spare parts 10.2 AA1500VI Spare Parts continued 26 - WATER TANK INLET 27 - 28 BAFFLE PLATES BACK PANEL WIRING AA FIRST TRAY AA1500 D.98 T210088 Online AA1000C_AA1500VI service manual v1.00 Oct 2024 package...
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Page 28: Section 11 Wiring Diagrams
SECTION 11 Wiring diagrams 11.1 Wiring diagram for all models WD142 GREEN/YELLOW – 11 to 14 BLACK – 6 SOLENOID BLUE – 5 HEATING ELEMENT THERMAL PINK BLUE VIOLET BROWN XETR5 CUT -OUT (ELEMENT) FUSE THERMAL XETR7 CUT -OUT (LIVE) THERMAL CUT -OUT (NEUTRAL) -
Page 29: Contact Details
Contact details Quality – Reliability – Integrity AA First Cedar House Grange Farm Long Lane Shaw Newbury RG14 2TF Tel: 01635 20248 https://www.aafirst.co.uk/ T210088 Online AA1000C_AA1500VI service manual v1.00 Oct 2024 package...
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