Worcester Bosch Boiler Fault Codes

Worcester Bosch fault codes on this site

We document 2,971 fault codes across 82 Worcester Bosch models, covering 968 distinct codes. Worcester Bosch boilers use a mix of numbered codes and light or status indications. Codes for 76 of these models are taken directly from the manufacturer's own service or installation manual.

Models covered: CDi Classic, Greenstar 25Si Compact ErP, GB162, Highflow CDi, Greenstar Ri, Greenstar 8000 Life & Style, 24CDi BF, Greenstar 12Ri, Greenstar 15sbi, 24/28CDi II RSF, 24i RSF, 24si II, Greenstar 25CDi, 25Si, Greenstar 27CDi, Greenstar 12i System, Greenstar 25 HE Combi, Greenstar 30HE, Greenstar Camray Utility, Greenstar CDi Compact, Greenstar Heatslave II, Greenstar Utility 18/25, WR325 RSF, Greenstar 25HE, Greenstar 25i (ZWB 7-25), Greenstar 1000, Greenstar 2000, Greenstar 4000, Greenstar i, Greenstar 24i / 28i Junior, CDi Classic Regular, CDi Highflow, Greenstar System, Greenstar 30i, Highflow 400 CDi, Highflow 550 CDi, Highflow 440 CDi, CDi, Greenstar 28CDi, Greenstar 35 CDi, Greenstar 42CDi, 26 CDi Xtra, Heatslave, 24 RSF, 28Si, CDi RSF, 35 RSF, 24i / 28i Junior, Hideaway 90, Danesmoor, Highflow 250, Highflow 300, Greenstar Utility, Greenstar 30si, Greenstar R29 40 HE, Utility, Ri 25 HE, Greenstar 15i System, R30 HE Plus, 537i, TA 211 E, ZB 7 27 HE, ZWB 7-25, Worcester 25/30 HE, 28 i SI, 24/28/35 CDi MkII, 532 / 537 / 542, Greenstar ZWB7, Greenstar i System, 9/14 - 19/24 CBi, Greenstar 30CDi Classic System ErP, 28 Cdi RSF, High Flow 400 BF, 15 CBi, 24 CBi, 25Si LPG, Greenstar, Greenstar 8000 F, Greenstar 8000+, Greenstar 8000+ Style, Greenstar Highflow, 28i RSF.