Fault finding and diagnosis
Greenstar 8000 Life – 6720883865 (2019/02)
62
Fault category W (maintenance codes)
10.1.2 Fault code table
Fault
code
Fault
category
Fault text on the display, description
Remedy
200
O
Boiler in heating mode
–
201
O
Boiler in hot water mode
–
202
O
Boiler in anti-cycle mode
–
203
O
Boiler in standby, no heat energy demand
–
204
O
Current prim. water temp. higher than set
val.
–
208
O
Chimney sweep demand
–
224
V
Safety temp. limiter has tripped
1. Open the closed valve in the heating circuit.
2. Top up water until the preset pressure is reached.
3. Connect the plug correctly to the safety temperature limiter.
4. Replace the safety temperature limiter.
227
V
No flame signal after ignition
1. Open the gas isolator.
2. Change the gas installation.
3. Replace the control unit/burner control unit.
4. Replace the ignition electrode.
5. Replace the monitoring electrode.
6. Replace the ignition cable.
7. Replace the ionisation cable.
8. Replace the air/gas ratio control valve.
9. Correct the burner setting.
228
V
Flame signal without flame present
1. Replace the air/gas ratio control valve.
2. Replace the ionisation cable.
3. Replace the control unit/burner control unit.
305
O
Boiler in hot water anti-cycle mode
–
306
V
Flame signal after closing the fuel supply
1. Replace the air/gas ratio control valve.
2. Replace the ionisation cable.
3. Replace the control unit/burner control unit.
360
V
Incompatible code plug.
1. Check if a correct code plug is installed.
2. Exchange or reconnect code plug.
815
W
Low loss header temp. sensor faulty
1. Check the sensor port.
2. Check the differential sensor for incorrect installation position or breakage.
1010 O
No BUS communication. Cable for EMS-Bus
is not correct connect or damaged.
1. Connect the cable for the EMS-Bus correct or replace the damaged cable.
2. Exchange fuse.
1017 W
Water pressure too low
1. Top up water and vent the system.
2. Replace the pressure sensor.
1021 B
Hot water temperature sensor is defective
1. Connect the plug to the hot water temperature sensor correctly.
2. Mount the hot water temperature sensor correctly.
3. Replace the hot water temperature sensor.
4. Replace the connecting lead to the hot water temperature sensor.
1037 W
Outside temperature sensor defective
The control panel is receiving unrealistic values from the outside sensor. Effect: The
minimum outside temperature is used.
1065 B
Pressure sensor defective or not connected 1. Connect the plug to the pressure sensor correctly.
2. Replace the connecting lead to the pressure sensor.
3. Replace the pressure sensor.
4. Replace the control unit.
1068 W
Outside temperature sensor defective
Outdoor temperature sensor is defective.
1073 W
Short circuit of the flow temperature sensor 1. Replace the temperature sensor.
2. Replace the connecting lead to the temperature sensor.
3. Replace the control unit.
1074 W
No signal from the flow temperature sensor
available
1. Connect the plug to the flow temperature sensor correctly.
2. Replace the flow temperature sensor.
3. Replace the connecting lead to the flow temperature sensor.
4. Replace the control unit.