Daikin EKHHP300AA2V3 Installation And Operating Instructions Manual

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Installation and operating instructions32DAIKIN EKHHP(3/5)00AA2V3DAIKIN Hot water heat pump008.1423444_05 – 08/20168 x Malfunctions and fault codes8 Malfunctions and fault codes8.1 FailuresWARNING!Touching live parts can result in an electric shock and lead to potentially fatal injuries and burns.● Before beginning work on live parts, disconnect all of the systems circuits from the powersupply (switch off main switch, disconnect fuse) and secure against unintentional restart.● The electrical connection and working on the electrical components should only be performed byelectrical engineers in compliance with valid standards and guidelines as well as the specifica-tions of the energy supply company.● The equipment covers and maintenance opening covers must be re-fitted immediately aftercompletion of the work.Malfunction Possible cause Possible solutionSystem not working(nothing on display, oper-ation LED off)No mains voltage● Switch on the external main switch of the machine.● Switch on system fuse(s).● Replace system fuse(s).Switching time programis not working or pro-grammed switching timesare being carried out atthe wrong time.Day of the week and time are not correctly set.● Set the weekday● Set time.● Check week day-switching time allocation.Switching time function deactivated ● Activate switching time function (Key ).During a switching time the user made a man-ual setting (e.g. changed the target tempera-ture, changed the operating mode)● Activate switching time function again (Key ).Control unit does notrespond to entries Operating system of control unit crashed.● Carry out RESET of control unit. Disconnect thesystem from the power supply for at least 10 s andthen switch on again.Displayed values are notupdated Operating system of control unit crashed.● Carry out RESET of control unit. Disconnect thesystem from the power supply for at least 10 s andthen switch on again.Hot water does not heatup enough.Water flow too low.● Check that all stop valves of the water circuit arecompletely open.● Air in hot water delivery circuit, bleed.Target value range is too low.● Check parameter [0-00], increase if necessary.● Set hot water temperature too low, increase manually.● Check parameter [6-00], reduce if necessary.Draw-off rate too high.● Reduce the draw-off rate, limit throughput.● Check operating mode, select a different operatingmode, if necessary (e.g. "High Output").