What causes DHW sensor 1 defect in my Buderus Control Unit?
A defect in DHW sensor 1 of your Buderus Control Unit may arise from several causes: the sensor being incorrectly connected or installed, a break or short circuit in the sensor lead, or a faulty sensor. Check the sensor connection and the sensor lead. Ensure the sensor is correctly mounted and compare resistance values with the sensor characteristic curve.
How to configure RC20/RF as a remote control on my Buderus Control Unit?
To configure the RC20/RF as a remote control on your Buderus Control Unit, the RC20/RF address may not be correctly assigned in the RC35 or not installed in RC35. Set the operating unit parameter in RC35 to RC20/RF and check the assignment of the RC20/RF.
What to do if the water pressure sensor is defect in my Buderus Control Unit?
If the water pressure sensor in your Buderus Control Unit is defective, it's likely that the digital water pressure sensor is faulty. Replace the water pressure sensor to resolve this.
What does it mean when my Buderus Control Unit says 'Two master operating units in system'?
If your Buderus Control Unit displays 'Two master operating units in system', it means that both the RC20 and RC35 are registered as master units. To fix this, change parameter P1 in RC20 or remove RC35 from the EMS bus.
What to do if my Buderus Control Unit has no communication with separator module?
If your Buderus Control Unit is not communicating with the separator module, it could be because the WM10 or bus cable is incorrectly connected or faulty, or the WM10 is not recognized by the RC35. Check the terminals on the WM10 and the bus cable. If the problem persists, replace the WM10.
What causes 'No wireless comm. with oper. unit HCx. Wireless malfunction' on my Buderus Control Unit?
The 'No wireless comm. with oper. unit HCx. Wireless malfunction' error on your Buderus Control Unit can occur due to several reasons: - The RC20RF is outside the range of reception. Bring the RC20RF within the range of reception. - The heating system has been switched off. Switch on the heating system. - When RFM20 was replaced, the RC20RF was not registered on the new RFM20. Register the RC20RF (see documentation for RC20RF).
Why does my Buderus Control Unit show no communication with UBA/MC10, or DBA?
If your Buderus Control Unit displays no communication with UBA/MC10, or DBA, the EMS bus system might be overloaded. Try resetting it by switching the heating system off and on. Notify customer support if necessary.
What to do if my Buderus Control Unit has no communication with BC10?
If your Buderus Control Unit is not communicating with the BC10, it could be due to a contact problem on the BC10 or the BC10 being faulty. Check the BC10 connection. If the problem persists, replace the BC10.
Why is my Buderus Control Unit not communicating with RC35?
If there is no communication between your Buderus Control Unit and the RC35, it could be due to a couple of reasons. First, the RC20/RF may have an incorrect address, so check the address (parameter P1) in RC20/RF. Second, the RC35 might not be installed or correctly connected, so check the RC35 connection.
What to do if the Buderus Control Unit shows a low battery for wireless operating unit HCx?
If your Buderus Control Unit displays a low battery warning for the wireless operating unit HCx, the battery in the RC20RF for HCx is low. Replace the batteries to resolve this issue.
Details warning symbols, signal words, and additional symbols used.
Provides crucial safety guidelines for installation, operation, and potential hazards.
Describes how to activate different operating modes (automatic, manual).
Explains how to set permanent day and night room temperatures.
Setting operating modes for RC35 and other heating circuits.
How to set heating schedules for day/night modes.
Addresses common questions about system behavior and measurements.
Explains different types of messages displayed by the unit.
Procedures for resetting system faults and locking issues.
General| Display | LCD |
|---|---|
| Temperature Control | Yes |
| Weather Compensation | Yes |
| Communication | EMS Bus |
| Mounting | Wall-mounted |
| Voltage | 24 V |
| Temperature range | 5°C to 30°C |
| Accuracy | ±0.5°C |
| Protection class | IP20 |
| Weight | 0.3 kg |
| Power consumption | 2 W |
| Switching current | Not applicable |
| Ambient temperature | 0°C to 45°C |
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