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Bosch Worcester GC2000iW 30 C NG User Manual

Bosch Worcester GC2000iW 30 C NG
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Fault finding and diagnosis
67
Worcester 2000 – 6 721 814 551 (2019/09)
604 V System fault, burner control unit. Reset appliance - factory reset.
If the fault persists following a reset, the burner control unit is faulty and must be
replaced.
810 DHW temperature has not increased for 2 hours. Prevent water from escaping.
Position DHW temperature sensor correctly.
If no voltage can be measured, then the MC10 control panel is faulty and must be
replaced.
If power is being supplied to the DHW cylinder charge pump but it is still not
running, it is faulty and must be replaced.
If power cannot be supplied to the DHW cylinder charge pump, then there is a
problem in the cable between the control panel and pump. Check screw terminals
and cables.
If current is not being supplied to the 3-way valve, there is a problem in the cable
between the control panel and valve. Check screw terminals and cables.
If current is being supplied to the 3-way valve but it is still not working, the valve is
faulty and must be replaced.
If a voltage of approx. 230 V is measured at the terminals and the pump is not
running, the pump is faulty and must be replaced.
Eliminate all faults in the cables. Vent if necessary.
Replace the pump if there are any deviations whatsoever.
Set the DHW heating to “Priority”.
If readings are different to the values in the table, replace the sensor.
815 R Faulty low loss header temperature sensor. Check the sensor port.
Check the temperature sensor for incorrect installation position or breakage.
1013 R Maximum combustion point reached. Check plausibility of displayed cylinder temperature.
Check plug-in connectors and cable harness for contact.
Replace cylinder temperature sensor.
1014 Ionisation current is too low.
1017 R Water pressure too low. Check water pressure, if necessary top up until the preset pressure is reached.
Check pressure sensor, replace if required.
1018 W Service time expired. Carry out maintenance.
1021 R DHW temperature sensor faulty. Check plug, connect correctly.
Check installation position of temperature sensor, mount correctly if required.
Check temperature sensor, replace if necessary ( Tab. 36, page 75).
Check connecting lead for breaks or short circuits, replace if required.
Check and replace the appliance electronics.
1022 DHW temperature sensor is faulty.
1023 R Maximum operation time including standby is
reached.
Perform inspection.
1065 R Pressure sensor faulty or not connected. Check plug, connect correctly.
Check pressure sensor, replace if required.
Check connecting lead for breaks or short circuits, replace if required.
Check and replace the appliance electronics.
1068 R Outside temperature sensor faulty. Remedy contact problem.
Replace the sensor.
1073 R Flow temperature sensor short circuit. Check flow temperature sensor, replace if necessary.
Check connecting lead for short circuits, replace if required.
Check and replace the appliance electronics.
1074 R No signal from the flow temperature sensor. Check plug, connect correctly.
Check flow temperature sensor, replace if necessary.
Check connecting lead for breaks, replace if required.
Check and replace the appliance electronics.
1075 R Short circuit in heat exchanger temperature
limiter.
Check heat exchanger temperature limiter, replace if required.
Check connecting lead for short circuits, replace if required.
Check and replace the appliance electronics.
Fault
code
Fault
category
Description Remedy

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Bosch Worcester GC2000iW 30 C NG Specifications

General IconGeneral
BrandBosch
ModelWorcester GC2000iW 30 C NG
CategoryBoiler
LanguageEnglish

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