Ideal Boilers Classic Combi FF 280 Installation And Servicing

Also see for Classic Combi FF 280: Installation and Servicing Manual User guide

Classic Combi FF 280 - Installation48Notes.1. Ensure that the boiler and system is full of water, free from air locks and that the pump is running.2. Press the overheat thermostat reset button and continue with the fault finding procedure. Replace the thermostat if it operatesbefore the normal working temperature is reached.3. In order to assist fault finding, the control box printed circuit board is fitted with 4 indicator lights:Neon I1 Air pressure switch madeNeon I2 Fan voltage indicationNeon I3 Mains supply to PCB 25B.Neon SGI Flashes to indicate spark operation (stops after detection)Replace thefanCheck allfusesReplace thethermostatReplace theswitchHas theburner on/offswitch madecontact ?Replacethe pumpIs the airpressureswitch in theNC position atthe start of theignitionsequence ?Does thefan start ?Is there asupplyvoltage atthe pump ?Expect230 V AC+10% -6%Does thefan start ?Is there asupply voltageto the fan ?(230 V+10% -6%)Is the DHWthermostatcalling forheat ?Has the DHWflowswitchoperated ?Is the DHWoverheatthermostatcalling forheat?Replace thethermostatReplace theflow switchReplace LogicPCB No.27Switch ON themains supplyand fully opena DHW tap.Does neon I3on PCBNo.25B glow ?Does thepump start ?Does neon I2on PCBNo.25B glow?Switch OFFthe mainssupply,disconnectthe DHWpreheatthermostatDoes neon I1on PCBNo.25B glow ?YESNOYESYESNOYESNONONONONONONOYESYES YESCheck thatthe pumpis free torotate.Does thepump nowstart ?NONONONOYESYESNO YESNONOBefore attempting to rectify any electrical fault ALWAYS carry out the preliminary electrical system checks, using a suitable testmeter. Detailed instructions on the replacement of faulty parts are contained within the 'Servicing' section of this publication.96 DOMESTIC HOT WATER MODE Start from cold. Turn the CH / HW switch to HW ONLY and theburner ON/OFF switch to ON. Also turn any time clock ON andswitch ON the mains electricity supply.Replace theair pressureswitchFAULT FINDINGIs there asupply voltageat the mainsinput terminalstrip?Expect 230 VAC +10% -6%Replace automaticignition PCBNo. 25BFAULT FINDINGTHEN YESDoes neon I2now glow ?YES