Fault finding and diagnosis
Worcester 2000 – 6 721 814 551 (2019/09)
68
1076 R No signal from heat exchanger temperature
limiter.
▶ Check plug, connect correctly.
▶ Check heat exchanger temperature limiter, replace if required.
▶ Check connecting lead for breaks, replace if required.
▶ Check and replace the appliance electronics.
2051 – Internal fault. ▶ Disconnect power from the system for 30 seconds.
▶ Check and replace control unit.
▶ Notify customer service.
2085
2908
V
V
Internal fault in burner control unit. ▶ Reset appliance.
▶ If the fault persists following a reset, the burner control unit is faulty and must be
replaced.
2909 – System fault, appliance electronics / basic
controller
▶ If the fault persists following a reset, the burner control unit or Key (including
interconnecting leads) is faulty and must be replaced.
2910 V Fault in flue system. ▶ Check whether a flue system is connected, install if required.
▶ Check for unobstructed cross-section of flue system, remove deposits if required.
2911 – Calibration failed. ▶ Replace faulty component.
2912 – No flame signal during calibration. ▶ Replace faulty component.
2913 – Flame signal too low during calibration. ▶ Check and replace flame sense electrodes (and interconnecting leads).
2914 – System fault, appliance electronics. ▶ If the fault persists following a reset, the appliance control unit is faulty and must
be replaced.
2915 V System fault, appliance electronics. ▶ Reset appliance.
▶ If the fault persists following a reset, the control unit is faulty and must be replaced.
2916 V System fault, appliance electronics. ▶ Reset appliance.
▶ Trigger heat demand.
▶ End heat demand.
If the fault persists, the control unit is defective and must be replaced.
2917 V No flame signal when checking the combustion
control.
▶ Disconnect power and then reconnect.
▶ Trigger heat demand.
▶ Wait 5 minutes.
▶ If the fault re-occurs within that time, reset the appliance without disconnecting
the supply voltage.
This triggers a calibration of the ionisation circuits.
▶ If the fault is still present after the calibration, the control unit is faulty and must be
replaced.
2918 – Fault in the flue. ▶ Clean the siphon and drain water out of the appliance (gas side).
2920 V Flame monitoring fault. ▶ Check electrodes and connecting leads, replace if required.
▶ Check earthing connections.
▶ Check appliance electronics, replace if necessary.
2921 B The appliance is in test mode ( Menu 5,
page 49).
–
2922 – Internal burner control fault. ▶ Check and replace control unit.
2923
2924
V
V
System fault, appliance electronics. ▶ Reset appliance - factory reset.
▶ If the fault persists following a reset, the appliance electronics are faulty and must
be replaced.
2925
2926
V
V
System fault, appliance electronics. ▶ Check the gas valve, replace if required.
▶ Check appliance electronics, replace if necessary.
Fault
code
Fault
category
Description Remedy
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