Buderus Logamatic EMS RC35

Other manuals for Buderus Logamatic EMS RC35

Installation And Service Instructions60 pages

Questions and Answers

E
Emily Ward DDSAug 18, 2025
What to do if the DHW stays cold on my Buderus Controller?
- W
  William RodriguezAug 18, 2025
  If the DHW (Domestic Hot Water) remains cold, there could be several reasons. First, check for constant drawing or system leaks and stop any leaks. Also, the temperature sensor may be incorrectly connected, fitted, or faulty, so check the sensor connection, lead, and mounting, and compare resistance values with the sensor curve. Finally, the cylinder primary pump could be incorrectly connected or faulty; verify it's working, possibly by running a function test.
D
Dean WeeksAug 20, 2025
Why is there no communication with RC35 on my Buderus Logamatic EMS RC35?
- V
  vbennettAug 20, 2025
  If there is no communication with the RC35, it could be due to a couple of reasons. The RC20/RF might have an incorrect address, so check the address (parameter P1) in RC20/RF. Alternatively, the RC35 might not be present or connected correctly, so check the connection to RC35.
H
Heather RoblesAug 22, 2025
What to do if thermal disinfection was unsuccessful on my Buderus Logamatic EMS RC35?
- M
  Melissa WoodwardAug 23, 2025
  If thermal disinfection was unsuccessful, it could be due to a few reasons. Too much water might have been drawn during thermal disinfection, so select thermal disinfection at a time when no additional heat demand is made. Also, the temperature sensor may be incorrectly connected, fitted, or faulty, so check the sensor connection, lead, and mounting, and compare resistance values with the sensor curve. Finally, the cylinder primary pump could be faulty; verify it's working, possibly by running a function test.
J
James MillsAug 25, 2025
What causes no communication with BC10 on Buderus Logamatic EMS RC35 Controller?
- S
  Susan GoodmanAug 26, 2025
  The lack of communication with the BC10 could stem from a contact problem on the BC10 or a faulty BC10. You should check the BC10 connection. If needed, replace the BC10.
M
Mark HallAug 27, 2025
What causes no wireless communication with operating unit HCx and wireless malfunction on Buderus Logamatic EMS RC35 Controller?
- W
  Wayne DaltonAug 28, 2025
  If there's no wireless communication with the operating unit HCx and a wireless malfunction, it could be because the RC20/RF is outside the range of reception, so bring the RC20/RF within range. Another possibility is that the heating system has been switched off, so switch it on. Finally, if the RFM20 was replaced, the RC20/ RF might not have been registered on the new RFM20, so register the RC20/ RF (see documentation for RC20/RF).
C
Christina GrahamAug 30, 2025
What to do if there is no communication with UBA/MC10, DBA, UBA-H3 or MCM10 on Buderus Logamatic EMS RC35?
- J
  Jean YoungAug 30, 2025
  If there is no communication with UBA/MC10, DBA, UBA-H3, or MCM10, it could be because the EMS BUS system is overloaded. Try resetting by switching the heating system ON and OFF. If necessary inform your local service centre.
C
Cynthia AndersonSep 1, 2025
What causes a defect outside sensor on Buderus Logamatic EMS RC35?
- A
  Autumn BruceSep 1, 2025
  A defect outside sensor can be caused by a few things: the temperature sensor might be incorrectly connected or fitted, there could be a breakage or short circuit in the sensor lead, or the temperature sensor itself might be faulty. To troubleshoot, check the sensor connection and lead, ensure the sensor is properly mounted, and compare resistance values with the sensor curve.
V
Vanessa LewisSep 4, 2025
What to do if the room temperature sensor is defect on Buderus Logamatic EMS RC35 Controller?
- A
  Ashley RobinsonSep 4, 2025
  If the room temperature sensor is defective, it's likely due to a faulty integral temperature sensor on the heating circuit's programming unit / remote control unit. The suggested solution is to replace the remote control unit.
G
gkellerSep 6, 2025
What causes DHW sensor 1 to be defect on Buderus Controller?
- J
  Jenna TuckerSep 7, 2025
  A defect in DHW sensor 1 can stem from a few issues: the temperature sensor might be incorrectly connected or fitted, there could be a break or short circuit in the sensor lead, or the temperature sensor itself might be faulty. To troubleshoot, check the sensor connection and sensor lead, ensure the sensor is correctly mounted, and compare resistance values with the sensor curve.
J
Jay SchaeferSep 9, 2025
What causes the low loss header sensor to be faulty on Buderus Logamatic EMS RC35 Controller?
- J
  Jennifer JonesSep 9, 2025
  A faulty low loss header sensor may be due to a few reasons: the temperature sensor might be incorrectly connected or fitted, there could be a break or short circuit in the sensor lead, or the temperature sensor might be faulty. To troubleshoot, check the sensor connection and sensor lead, ensure the sensor is correctly mounted, and compare resistance values with the sensor curve.

Summary

Key to Symbols and Safety Instructions

Explanation of Symbols

Defines warning symbols and keywords indicating risk levels.

Safety Instructions

Provides critical safety guidelines for appliance installation and operation.

Principles of Operation

Setting Operating Modes

Temperature Adjustments

Operation with the User Menu

Selecting Heating Circuits

Troubleshooting

Frequently Asked Questions

Addresses common issues and provides explanations for system behavior.

Fault and Service Messages

Explains how to interpret and respond to system error and service notifications.

Clearing Faults (Reset)

Describes the procedure for resetting the system to clear faults.

User Overview of RC35

RC35 User Menu Flow

Buderus Logamatic EMS RC35 Specifications

General

Communication	EMS bus
Compatibility	Buderus heating systems with EMS bus
Mounting	Wall mounting
Control functions	Time programs
Storage temperature	-20°C to 60°C