CONTENTS | SPECIAL INFORMATION SPECIAL INFORMATION 6.12 The accommodation is too hot in winter ������������������� 18 6.13 The accommodation is too cold in spring and autumn � 18 OPERATION 6.14 The accommodation is too hot in spring and autumn �� 18 General information �����������������������������������������3 6.15 The accommodation is too hot in summer ����������������...
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 This manual is intended for the appliance user and qualified con- tractors.
OPERATION Appliance description When the temperature is very low, or when there is a very high WARNING Injury heat demand, the appliance covers the residual heat demand by The appliance may be used by children over 8 years of means of an integral electric emergency/booster heater. With a age and persons with reduced physical, sensory or men- mono mode design, the electric emergency/booster heater is acti- tal capabilities or a lack of experience and expertise,...
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OPERATION Operation the scroll wheel, two keys and above these a display. The display Heating: shows the current appliance status and provides messages as well The heating symbol is displayed when the appliance is as information. The programming unit functions are accessed via in heating mode.
OPERATION Operation 4.1.4 Menu key Note The menu key has two functions. If you are on the default screen, If you have gloves on, have wet hands or the program- ming unit is damp, this impedes the recognition of your press “MENU”...
OPERATION Operation 4.2.7 EMERGENCY MODE WEDNESDAY 10 SEPT 14 10:23 TIME If emergency mode is enabled, the “Compressor” heating stage is OUTSIDE TEMPERATURE 14.0 °C skipped. Heating is provided by the solar thermal system (if con- nected) or the electric emergency/booster heater. The dual mode DHW TEMPERATURE 35.0 °C point is not taken into consideration.
OPERATION Operation Example 1 VENTILATION STAGES To enter set temperatures, a number surrounded by a circle ap- pears on the display. This indicates that you can change the value UNSCHEDULED VENT. by turning the scroll wheel. UNSCHED. VENT TIME STAGE 2 MAIN MENU ROOM TEMPERATURE DAY HEATING...
OPERATION Operation 4.4.1 Contractor access FAULT LIST MAIN MENU CONTRACTOR FAULT SEARCH To prevent incorrect adjustments, some appliance parameters may 01. FAULT NO. 20 11:00 TIME 10. SEPT 14 only be changed by qualified contractors. These parameters are protected and can only be changed after entering a code. 02.
OPERATION Operation DHW PROGRAM MAIN MENU HEATING CIRCUIT 1 PROGRAMS HEATING PROGRAM HC Here, you can set the periods when DHW is heated with reference to the set day temperatures. In the other phases, the set night MONDAY temperatures are followed.
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OPERATION Operation ROOM TEMPERATURES HC1 ROOM TEMPERATURE DAY HC1 ROOM TEMP. NIGHT HC1 ROOM TEMP. STANDBY HC1 MANUAL SET HC1 ∆Y ROOM TEMPERATURE HC1 ∆X Select the required set room temperature for day, setback and standby modes.
OPERATION Operation FLOW PROPORTION Flow means the pipework that supplies hot water to the heating system. The return carries the cooled water from the heating sys- tem to the heating system. With the “FLOW PROPORTION” param- eter you determine whether your heating system should function as a flow or return temperature-controlled system.
OPERATION Operation Select the set DHW temperatures here. Enter the values for day, Quick ventilation with external pushbutton setback, standby and manual modes. Subject to operating mode, With an external pushbutton that can be installed on site, you the temperature in the DHW cylinder is brought to the correspond- can set ventilation immediately to stage 3.
OPERATION Operation Cooling and solar SOLAR Under parameter “SOLAR” qualified contractors can use param- SOLAR ACTIVATION Direct line: P80 eter “PRIORITY SOLAR” to select the priority for cooling oper- ation if a solar thermal system is connected. Possible settings are “Priority solar”, “Cooling”...
OPERATION Operation CONTROLLER MINIMUM CYCLES (P54) MAXIMUM CYCLES (P55) ≥50 OUTSIDE TEMP MAX CYC (P56) °C SOFTWARE VERSION OUTSIDE TEMP MIN CYC (P57) °C “SOFTWARE VERSION” shows which software version is installed on the control PCB. The software version indicates the appliance DRY HEATING PROGRAM ...
OPERATION Cleaning, care and maintenance FAULT SEARCH PROCESS STATUS If the appliance registers a fault, this is clearly displayed with the The displayed values are used for analysis in the event of a fault. message shown below. ANALYSIS WEDNESDAY 10 SEPT 14 16:27 TIME...
OPERATION Troubleshooting Troubleshooting Filter symbols appear The appliance is equipped with an automatic filter contamination detector. The constant flow rate control of the fans results in an increase in fan speed when the filters become contaminated. This increase in speed is evaluated to display a filter change require- ment.
OPERATION Troubleshooting design, can take up to 2 years. If the room is used to dry washing Another reason might be the dual mode point. Increasing the however, condensate can still form. dual mode point, however, can lead to high energy consumption. f Check whether the air hoses are fitted correctly, and that no 6.12 The accommodation is too hot in winter cold air escapes.
OPERATION Menu structure Menu structure Note Some menu items are protected by a code and can only be accessed and adjusted by a qualified contractor. Menu item/parameter Direct Unit Description ACTUAL VALUES ROOM TEMPERATURE ROOM TEMPERATURE HC1 °C If an external programming unit is connected and assigned to the heating circuit, the temperature measured in the programming unit is displayed.
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OPERATION Menu structure Menu item/parameter Direct Unit Description COMPRESSOR STARTS AMOUNT OF HEAT HEAT METER HTG DAY Amount of heat that was transferred by the heat pump to the heating circuit on this day. HEAT METER HTG TTL Amount of heat that has been transferred by the heat pump to the heating circuit since the appliance was commissioned.
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OPERATION Menu structure Menu item/parameter Options Direct Unit Dis- Min. Max. Standard Energy sav- System play LWZ 304 SOL ing recom- value only [ L WZ 404 SOL ] mendation PROGRAMS HEATING PROGRAM ...
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OPERATION Menu structure Menu item/parameter Options Direct Unit Dis- Min. Max. Standard Energy sav- System play LWZ 304 SOL ing recom- value only [ L WZ 404 SOL ] mendation FLOW PROPORTION HC1 MAX. SET VALUE HC1 °C MIN. SET VALUE HC1 °C ...
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OPERATION Menu structure Menu item/parameter Options Direct Unit Dis- Min. Max. Standard Energy sav- System play LWZ 304 SOL ing recom- value only [ L WZ 404 SOL ] mendation UNSCHED. VENT TIME STAGE 1 1000 UNSCHED. VENT TIME STAGE 2 1000 ...
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OPERATION Menu structure Menu item/parameter Options Direct Unit Dis- Min. Max. Standard Energy sav- System play LWZ 304 SOL ing recom- value only [ L WZ 404 SOL ] mendation DHW COMPRESSOR DELAY DHW SOLAR TEMP. °C SOLAR HYSTERESIS COLLECTOR TEMP LIMIT °C ...
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OPERATION Menu structure Menu item/parameter Options Direct Unit Dis- Min. Max. Standard Energy sav- System play LWZ 304 SOL ing recom- value only [ L WZ 404 SOL ] mendation SWITCH ON MANUALLY CONTROL VALVE HTG OFF | ON CONTROL VALVE DHW OFF | ON ...
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OPERATION Menu structure Menu item/parameter Options Direct Unit Dis- Min. Max. Standard Energy sav- System play LWZ 304 SOL ing recom- value only [ L WZ 404 SOL ] mendation OFF | ON COOLING OFF | ON ANALYSIS CURRENT MODE IWS ...
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GUARANTEE | ENVIRONMENT AND RECYCLING Guarantee The guarantee conditions of our German companies do not apply to appliances acquired outside of Germany. In countries where our subsidiaries sell our products a guarantee can only be issued by those subsidiaries. Such guarantee is only grant- ed if the subsidiary has issued its own terms of guarantee.