TradeAssistIQHome

Worcester Bosch Greenstar 4000 Combi fault 3071

Comfort + II RF communication fault

Gas boiler

What it means

Fault relating to Comfort + II RF room control communication or configuration.

Likely causes

  1. Incorrect configuration/address setting requiring hard-wired room control
  2. Damaged EMS connection cable of the room control
  3. Incorrect BUS voltage on room control
  4. Defective room control

Where to start

  1. Check the configuration (address setting)
  2. Check the EMS connection cable of the room control for damage
  3. Measure BUS voltage on the room control

The full answer, free

  • 2 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 79), right under the answer
Ask about 3071 freeCreate a free account

Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.

From the Worcester Bosch manual for the Greenstar 4000 Combi. Check the model on the data plate before you order parts.

Other Worcester Bosch Greenstar 4000 Combi fault codes