Buderus RC35 User Manual (English)

Other manuals for Buderus RC35

Installation And Servicing Instructions56 pages

Questions and Answers:

S
Susan JohnsonAug 31, 2025
What causes 'No wireless comm. with oper. unit HCx. Wireless malfunction' on my Buderus Control Unit?
- H
  hubergarrettAug 31, 2025
  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).
D
Desiree MurrayAug 30, 2025
Why does my Buderus Control Unit show no communication with UBA/MC10, or DBA?
- A
  Amanda OneillAug 30, 2025
  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.
C
Christopher ReedAug 29, 2025
What to do if my Buderus Control Unit has no communication with BC10?
- X
  xlevineAug 29, 2025
  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.
J
Jessica MorseAug 27, 2025
Why is my Buderus Control Unit not communicating with RC35?
- T
  Teresa ClarkAug 27, 2025
  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.
E
Elizabeth ArnoldAug 27, 2025
What to do if the Buderus Control Unit shows a low battery for wireless operating unit HCx?
- T
  thomas61Aug 27, 2025
  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.
J
Joseph RoseAug 25, 2025
What to do if my Buderus Control Unit DHW stays cold?
- M
  melissa15Aug 26, 2025
  If the DHW (domestic hot water) stays cold, it may be due to a constant drawing of water or a system leak. To resolve this, fix any leaks in your system.
L
loganjustinAug 23, 2025
Why was the thermal disinfection unsuccessful on my Buderus Control Unit?
- C
  christopher69Aug 23, 2025
  If thermal disinfection was unsuccessful on your Buderus Control Unit, it might be because the water draw was too great during the disinfection period. Select a time for thermal disinfection when there is no other demand for heat.

Buderus RC35 Specifications

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