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Troubleshooting
Related Manuals for STIEBEL ELTRON WWK 224 ZA
Summary of Contents for STIEBEL ELTRON WWK 224 ZA
- Page 1 OPERATION AND INSTALLATION DHW heat pump » WWK 224 ZA » WWK 304 ZA...
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Page 2: Table Of Contents
CONTENTS SPECIAL INFORMATION 14.3 Resetting the high limit safety cut-out ��������������������� 27 14.4 Motor overload relay ������������������������������������������� 27 OPERATION Maintenance ������������������������������������������������ 28 General information �����������������������������������������4 15.1 Removing the appliance cover ������������������������������� 28 Safety instructions ����������������������������������������������� 4 15.2 Removing the casing ring ������������������������������������� 28 Other symbols in this documentation �����������������������... -
Page 3: Special Information
SPECIAL INfORmATION SPECIAL INfORmATION - A T&P valve and a cold water expansion con- trol valve must be installed. Observe all appli- cable national and regional regulations and instructions. - The appliance may be used by children over 8 years of age and persons with reduced phys- - A pressure reducing valve must be installed. -
Page 4: Operation
OPERATION General information OPERATION f This symbol indicates that you have to do something. The ac- tion you need to take is described step by step. These symbols show you the software menu level (in this example level 3). General information Units of measurement The chapters "Special information"... -
Page 5: Appliance Description ���������������������������������������5 15.9 Protective Anode And Battery Change
OPERATION Appliance description WARNING Burns Material losses Touching hot components can lead to burns. Never cover the appliance. Covering the air intake or air f When working on hot components, always wear discharge leads to a reduced air supply. If the air supply protective working clothing and safety gloves. -
Page 6: Heat Pump Operating Principle ������������������������������� 6 15.10 Fitting The Appliance Cover
OPERATION Appliance description your draw-off patterns, the water is heated automatically to the DHW heating is started when the available mixed water volume selected set temperature. decreases to the percentage of the maximum mixed water volume set in the "Charge level" parameter. External signal transmitters can be integrated via the built-in con- tact input, e.g. -
Page 7: Frost Protection
OPERATION Settings evaporator. While this is happening, refrigerant flow to the con- Material losses denser is disabled by another solenoid valve. At the factory, the appliance is fitted with rechargeable In contrast to conventional defrosting methods, the appliance batteries that ensure the power supply to the impressed guarantees that this defrosting takes place only when needed. -
Page 8: Weatherproof Cover ��������������������������������������������� 8 16.7 Standardised Output Data
OPERATION Settings Emergency shutdown In the event of an emergency, carry out the following steps: f Disconnect the appliance from the power supply at the fuse in the domestic distribution board or by unplugging the power plug. f Shut off the cold water supply. Weatherproof cover The programming unit is equipped with a weatherproof cover to protect it from the elements. -
Page 9: Adjusting The Settings
Number of times hot gas temperature Note sensor was triggered For hygiene and other reasons, only change this value if Number of defrost faults instructed by Stiebel Eltron representative.. Number of low pressure triggers Number of high pressure triggers Set temperature 1 is the DHW temperature to which the appliance... - Page 10 Only use the runtime-dependent quick heat-up if instruct- Set temperature 2 ed by a Stiebel Eltron representative. Enabling this function is likely to impact the efficiency of Note the product and may lead to unnecessary higher energy For hygiene reasons, do not set a DHW temperature of consumption and operational costs.
- Page 11 "Charge level" parameter. Factory setting 4.5.1 Rapid/comfort heat-up Charge level WWK 224 ZA Normally, the "Rapid heat-up" button is used to activate the rapid/ Charge level WWK 304 ZA comfort heat-up function, which enables you to cover an unex-...
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Page 12: Cleaning, Care And Maintenance
OPERATION Cleaning, care and maintenance If rapid/comfort heat-up is activated manually by pressing the rel- If the 7-day runtime for emergency heating mode has expired, evant button, the heat pump and the electric emergency/booster you can restart emergency heating mode for a further 7 days by heater will start once in parallel, irrespective of the selected set pressing "Rapid heat-up". -
Page 13: Protective Anode And Battery Change
OPERATION Troubleshooting Appliance Care and maintenance tips Problem Cause Remedy components For indoor Operation of the appliance can Condensate Undo the condensate drain. Check that the condensate drain installation: cause the room temperature to drain is clear and remove any dirt from the "Condensate drain" The room fall by 1 to 3 °C. - Page 14 OPERATION Troubleshooting Listed below are the fault codes which will allow you to enable Fault description Remedy emergency heating mode. Continu- The cylinder top sensor is faulty. The Notify a qualified con- Fault code displayed ously on actual temperature display switch- tractor. es from the cylinder top sensor to the integral sensor.
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Page 15: Installation
INSTALLATION Safety INSTALLATION Incorrect use The following are not permitted: - Operating the appliance when the casing is open - Filling the appliance with a refrigerant other than the one Safety detailed in chapter "Specification / Data table" - Heating liquids other than potable water Only a qualified contractor should carry out installation, commis- sioning, maintenance and repair of the appliance. -
Page 16: Storage
INSTALLATION Preparation - The application limits for the heat pump and DHW cylinder Material losses must be maintained (see chapter "Specification / Data table"). If transported horizontally, the appliance must always be - The substrate of the installation site must be level and have laid on the shaded side of the box. -
Page 17: Siting The Appliance
INSTALLATION Preparation Note The appliance output data is calculated according to the relevant standards, using the intake temperature speci- fied in the data table. Below this temperature the appli- ance efficiency and output decrease. The heat-up time is extended. Note You can improve the efficiency of the appliance by utilis- ing the waste heat from other appliances to heat the DHW cylinder, e.g. -
Page 18: Installation
INSTALLATION Installation 9.4.1 Minimum clearances DHW line f Maintain the minimum clearances. Stainless steel, copper and plastic pipework are approved. Material losses When using plastic pipework, observe the manufacturer's data and chapter "Specification / Fault conditions". f Thoroughly flush the pipework before connecting the appli- ance. -
Page 19: Condensate Drain
INSTALLATION Installation T&P valve ( 600 kPa ) 10.1.4 Thermal insulation f Insulate the DHW line and valves against heat loss and to im- prove energy efficiency in accordance with locally applicable regulations. f Insulate the cold water supply line to prevent condensate forming. -
Page 20: Electrical Connection
INSTALLATION Installation 10.3 Electrical connection The appliance is supplied with a flexible power cable without plug. f If the power cable is not long enough, you may disconnect it WARNING Electrocution from the appliance and replace it with a longer, more suita- The appliance is supplied with a flexible power cable ble cable. - Page 21 INSTALLATION Installation f Prepare the cables in such a way that each cable terminates - Water temperature = 62 °C with a wire ferrule. - Set temperature 1 = 61 °C f Push the cables through one of the cable entries in the appli- - Set temperature 2 = 65 °C ance casing.
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Page 22: Assembling The Appliance
INSTALLATION Commissioning 10.4 Assembling the appliance Example 1: Power supply utility signal with its own phase Note GNYE Refit the appliance cover after completing your work. See chapter "Maintenance and cleaning / Fitting the appliance cover"). 11. Commissioning WARNING Electrocution Never operate the appliance when the casing is open or without a cover. -
Page 23: Settings
Material losses Service menu settings shall only be accessed with prior To set the next digit, press the "Rapid approval from Stiebel Eltron. heat-up" button. To confirm the code after entering all To unlock the service menu, you need to connect a service plug digits, press the "Rapid heat-up"... - Page 24 INSTALLATION Settings To clear the high pressure lockout, press Service menu Temperature of evaporator fins the "Rapid heat-up" button. Number of times hot gas temperature sensor was triggered Number of defrost faults ...
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Page 25: Appliance Shutdown
INSTALLATION Appliance shutdown Number of low pressure triggers Press the "Menu" button until "u" appears on the display. To reset the counter to 0, press the "Rapid You can change this value using the heat-up" button. "Plus" and "Minus" buttons. ... -
Page 26: Fault Codes
INSTALLATION Troubleshooting f For work inside the appliance, remove the appliance cover Fault description Remedy (see chapter "Cleaning and maintenance / Removing the ap- pliance cover"). Con- The integral sensor is faulty. Check that the plug is seated cor- tinu- In the event of a faulty inte- rectly. -
Page 27: Resetting The Safety Pressure Limiter
INSTALLATION Troubleshooting Fault description Remedy Fault description Remedy 128 Con- There is no communication Check that the plug is seated cor- Flash- A permanent pressure switch Check the relevant fault counter tinu- between the controller and rectly and replace the connecting fault has occurred. A pressure and look up the corresponding ously the programming unit. -
Page 28: Maintenance
INSTALLATION Maintenance 15. Maintenance WARNING Electrocution Prior to all work on the appliance, isolate it from the power supply. 15.1 Removing the appliance cover 1 Fixing screws on casing ring The casing ring is fastened with screws. f Undo the fixing screws on the casing ring. f Remove the condensate drain bend and pipe collar of the drain. -
Page 29: Draining The Cylinder
INSTALLATION Maintenance 15.5 Valves f Undo the screw that fastens the appliance cover to the top of the programming/control cover. Regularly check the valves in the system (safety valve, pressure f Remove the programming/control cover and the appliance reducing valve, drain valve) to ensure the operational reliability cover. -
Page 30: Fitting The Appliance Cover
INSTALLATION Maintenance is security of supply, no maintenance of the batteries is required f Carefully pull the battery compartment on the right-hand and the appliance is maintenance-free in this regard. side forward. f Remove the battery compartment from the retainer. Material losses f Open the battery compartment using a screwdriver. -
Page 31: Specification
INSTALLATION Specification 16. Specification 16.1 Dimensions and connections 16.1.1 WWK 224 ZA WWK 224 ZA Entry electrical cables Cold water inlet Male thread DHW outlet Male thread T&P valve Female thread Rp 3/4 Condensate drain Male thread G 3/4 Air intake... - Page 32 INSTALLATION Specification 16.1.2 WWK 304 ZA WWK 304 ZA Entry electrical cables Cold water inlet Male thread DHW outlet Male thread T&P valve Female thread Rp 3/4 Condensate drain Male thread G 3/4 Air intake Air discharge Cover for manufacturing aperture 32 ...
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Page 33: Hydraulic Diagram
INSTALLATION Specification 16.2 Hydraulic diagram Hot water Cold water 12 13 Cold water supply Expansion control valve 1 Cold water supply Hot water connection Drain 2 Hot water connection 3 Connection for T&P safety valve Connection for T&P safety valve Drip tray (only for indoor installation) 4 Condensate drain Condensate drain... -
Page 34: Wiring Diagram
INSTALLATION Specification 16.3 Wiring diagram F 100 mA / 250 V 4,8 V coat GNYE N´ L´ housing A3 storage tank storage tank active defrost / active anode 34 | WWK 224 ZA | WWK 304 ZA www.stiebel-eltron.com... -
Page 35: Fault Conditions
WARNING Burns In the case of a fault, temperatures up to the high limit safety cut-out limit can occur (see chapter "Specifica- tion / Data table"). 16.5 Data table WWK 224 ZA WWK 304 ZA 203870 203871 Hydraulic data Nominal capacity Max. -
Page 36: Appliance Parameters
INSTALLATION Specification WWK 224 ZA WWK 304 ZA Sound emissions Sound power level (EN 12102) dB(A) Average sound pressure level at 1 m distance, free field dB(A) Versions IP rating IP24 IP 24 Refrigerant R134a R134a Refrigerant charge 0.85 0.85 Global warming potential of the refrigerant (GWP100) -
Page 37: Environment And Recycling
INSTALLATIONGUARANTEE | ENVIRONmENT AND RECYCLING Specification are the measuring equipment, the system configuration, the age of the system and the flow rates. A confirmation of the specified output data can only be obtained if the conditions applicable to the relevant test match those of the standard shown in the heading of this chapter. - Page 38 WARRANTY Warranty Stiebel Eltron Southern Africa Only - According to The warranty period for a unit used for commercial pur- national regulations in the Republic of South Africa poses is shown in the table below. Commercial purposes means that the unit is used for a non-domestic purpose...
- Page 39 WARRANTY Warranty exclusions We may charge you: We may reject your warranty claim if: 13.1. for any additional transport costs if the unit is installed more than 30 kilometres from our closest authorised ser- 12.1. The unit was not installed by a registered and qualified vice technician.
- Page 40 Co m f o r t t h r o u gh Te c h n o l o g y STIEBEL ELTRON GmbH & Co. KG Dr.-Stiebel-Straße 33 | 37603 Holzminden | Germany info@stiebel-eltron.com | www.stiebel-eltron.com 4 < A M H C M O = e i c b d a >...
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