Daikin EKHBRD011ADV1 Installation Manual

Also see for EKHBRD011ADV1: Operation manual

Installation manual35 EKHBRD011~016ADV1+Y1Indoor unit for air to water heat pump system4P402191-1A – 2015.04MAINTENANCE AND SERVICEIn order to ensure optimal availability of the unit, a number of checksand inspections on the unit and the field wiring have to be carried outat regular intervals.This maintenance should be carried out by your local Daikintechnician.To execute the maintenanceactivities as mentioned below, it isonly required to remove the frontdecoration panel.To take away the front decorationpanel, remove the 2 bottom screwsand then unhitch the panel.Maintenance activitiesChecksThe described checks must be executed at least once a year byqualified personnel.1 Water pressure relief valveCheck for correct operation of the pressure relief valve byturning the red knob on the valve counter-clockwise: If you do not hear a clacking sound, contact your local dealer. In case the water keeps running out of the unit, close boththe water inlet and outlet shut-off valves first and then contactyour local dealer.2 Pressure relief valve hoseCheck that the pressure relief valve hose is positionedappropriately to drain the water.3 Indoor unit switch boxCarry out a thorough visual inspection of the switch box and lookfor obvious defects such as loose connections or defectivewiring.4 Water pressureCheck if the water pressure is above 1 bar.If necessary add water.5 Water filterClean the water filter.Charging and vacuuming When charging, recovery and vacuuming the R134a circuit isrequired, field setting [E-00] must be activated. Refer to fieldsettings described in "[E] Service mode" on page 25. For charging, recovery and vacuuming of the R410A circuit,refer to the outdoor unit installation manual.TROUBLESHOOTINGThis section provides useful information for diagnosing andcorrecting certain troubles which may occur in the unit.This troubleshooting and related corrective actions may only becarried out by your local Daikin technician.General guidelinesBefore starting the troubleshooting procedure, carry out a thoroughvisual inspection of the unit and look for obvious defects such asloose connections or defective wiring.When a safety device was activated, stop the unit and find out whythe safety device was activated before resetting it. Under nocircumstances safety devices may be bridged or changed to a valueother than the factory setting. If the cause of the problem can not befound, call your local dealer.If the pressure relief valve is not working correctly and is to bereplaced, always reconnect the flexible hose attached to the pressurerelief valve, to avoid water dripping out of the unit!WARNING: ELECTRIC SHOCK Before carrying out any maintenance or repair activity,always switch off the circuit breaker on the supplypanel, remove the fuses or open the protectiondevices of the unit. Make sure that before starting any maintenance orrepair activity, also the power supply to the outdoorunit is switched off. Do not touch live parts for 10 minutes after the powersupply is turned off because of high voltage risk. Additionally, measure the points as shown in figure 5with a tester and confirm that the voltage of thecapacitor in the main circuit is no more than 50 V DC. The heater of the compressor may operate even instop mode. Please note that some sections of the electriccomponent box are hot. Make sure you do not touch a conductive section. Do not rinse the indoor unit. This may cause electricshocks or fire.Play it safe!Touch a metal part by hand (such as the stop valve) inorder to eliminate static electricity and to protect the PCBbefore performing service.2xWhen carrying out an inspection on the switch box of theunit, always make sure that the main switch of the unit isswitched off.