Daikin EKHHP300AA2V3 Installation And Maintenance Manual

Also see for EKHHP300AA2V3: Installation and operating instructions

6 x Malfunctions and fault codesDAIKIN EKHHP(3/5)00AA2V3DAIKIN Hot water heat pump008.1423444_02 – 09/2015Installation and maintenance manual296 Malfunctions and fault codes6.1 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 power supply (switch off mainswitch, disconnect fuse) and secure against unintentional restart.● The electrical connection and working on the electrical components should only be performed by electrical engineersin compliance with valid standards and guidelines as well as the specifications of the energy supply company.● The equipment covers and maintenance opening covers must be re-fitted immediately after completion 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. To do so, disconnectthe system 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. To do so, disconnectthe system 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").