Fault finding and diagnosis
63
Greenstar 8000 Life – 6720883866 (2019/04)
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.
1037 W Outside temperature sensor defective The control panel is receiving unrealistic values from the outside sensor. Effect: The
minimum outside temperature is used.
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.
1075 W Short circuit of the temperature sensor at
the heating block
1. Replace the temperature sensor.
2. Replace the connecting lead to the temperature sensor.
3. Replace the control appliance.
1076 W No signal from the temperature sensor at
the heating block available
1. Replace the temperature sensor.
2. Replace the connecting lead to the temperature sensor.
3. Replace the control unit.
2920 V Fault in flame monitoring Igniter on for too long after flame detected:
1. Check cabling.
2. Check igniter.
3. Check burner module.
2924 V No feedback from the modulating gas valve Gas valve relay defect.
1. Press Reset button and apply burner start. Wait to see if fault reoccurs.
2. Replace the gas valve.
2925 V Too low feedback from the modulating gas
valve
Too low feedback from the modulating/current controlled gas valve.
2927 B Flame failed during burner operation 1. Open the main shut-off valve.
2. Open the appliance shut-off valve.
3. Shut down the appliance and check the gas line.
4. Signal evaluation on printed circuit board defective.
5. Replace the ionisation electrode.
6. Establish protective conductor connection (PE) in the control unit.
7. Replace the ignition cable.
8. Replace the connecting lead to the ionisation electrode.
9. Replace the air/gas ratio control valve.
10.Set the burner correctly.
11.Set the burner at minimum rated load.
12.Check the integrity flue system.
13.Clean the heating block on the flue gas side.
14.Replace the control unit/burner control unit.
2946 V Incorrect code plug detected Replace the code plug.
2948 B No flame signal with low output The burner starts automatically after cleaning.
1. If the fault occurs repeatedly: check the settings of the CO
2
values.
2950 B No flame signal following starting procedure The burner starts automatically after cleaning.
1. Set the correct gas/air ratio correctly.
2963 B Signal from flow and heat exchanger
temperature sensor outside the permissible
range
Connect the connecting lead correctly.
Fault
code
Fault
category
Fault text on the display, description Remedy
To Next Page
Loading...
