TradeAssistIQHome

Worcester Bosch Greenstar 4000 System fault 360

System fault boiler electronics / basic controller

Gas boiler

What it means

System fault in boiler electronics or basic controller related to code plug (V category fault).

Likely causes

  1. Wrong code plug inserted
  2. Damaged code plug

Where to start

  1. Check the code plug is not damaged
  2. Navigate to Info menu to view Current status
  3. Check Boiler submenu for Max. heat output, Actual temp., Set flow temp., HEx temperature, Act. burner mod., Burner output, Ionisation current, Pump mod., Outside temp., Burner starts, Hours run, System pressure

The full answer, free

  • 3 more checks in order
  • How to put it right, step by step
  • The manual page for this fault (page 73), right under the answer
Ask about 360 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 System. Check the model on the data plate before you order parts.

Other Worcester Bosch Greenstar 4000 System fault codes