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Mary BrownJul 27, 2025
How to fix H and ! symbols displayed on Bosch Boiler?
- CCassandra MillerJul 27, 2025
If the H and ! symbols are displayed, press and hold the key until the symbols disappear.
How to fix H and ! symbols displayed on Bosch Boiler?
If the H and ! symbols are displayed, press and hold the key until the symbols disappear.
What to do if only H appears on Bosch Gaz 6000 W Boiler display?
If only the H symbol appears, switch the device off and on again using the K key.
General| Fuel Type | Natural Gas |
|---|---|
| Efficiency (%) | 93% |
| NOx Class | 5 |
| Mounting | Wall-mounted |
| Central Heating Output (kW) | 24 kW |
| Efficiency | 93% |
| Type | Combination Boiler |
Defines signal words like DANGER, WARNING, CAUTION, and NOTICE for risk communication.
Provides essential safety guidelines for the heating system operator.
User responsibility for safe operation; recommends annual inspection.
Warns against improper modifications and emphasizes work by approved contractors.
States compliance with European Directives and mentions CE marking.
Describes WBN 6000 CR (combi boiler) and WBN 6000 HR (central heating/DHW).
Instructions on how to open the service valves for the heating system.
Explains how to check operating pressure and recommends 1-2 bar.
Guide on adding heating water, warning against topping up with cold water.
Details the function of buttons and displays on the appliance's control panel.
Instructions for turning the appliance on using the power key.
How to adjust the maximum flow temperature between 40°C and 82°C.
Guide to setting the domestic hot water temperature between 35°C and 60°C.
Instructions to activate summer mode, where heating is switched off but DHW is retained.
Procedure for turning the device off or setting it to standby mode.
Explains device frost protection and system frost protection measures.
Explains modulating control for efficient heating and reduced fuel consumption.
Recommends room temperature-dependent or weather-compensated controllers.
Guidance on using thermostatic valves for optimal room temperature.
Advises on setting flow temperature for underfloor heating systems.
Proper ventilation techniques for rooms with the heating system.
Tips for energy saving and preventing calcification with DHW settings.
Instructions for setting the DHW circulation pump's time program.
Information on country-specific recycling processes for packaging materials.
Guidance on dismantling and recycling used appliance components.
Definition of operating pressure in the heating system.
Explanation of how the appliance heats water as it flows through.
Definition of a heating controller's function in automatic temperature control.
Definition of the pipework returning heating water to the appliance.
Definition of the pipework supplying heated water from the appliance.
Definition of the water used to fill the heating system.
Definition of mechanical temperature controllers for heating water flow rate.
Definition of a siphon as a stench trap for draining water.
Definition of the temperature of heated water flowing to radiators.
Definition of a pump circulating hot water between storage and draw-off points.
