Baxi LUNA DUO-TEC 1.70 User Manual page 46

E08 Return temperature too low
E09 Return temperature too high
Temperature difference
E10
between the supply and return
E11
temperatures too great
Temperature of heat
exchanger is above the normal
E12
range (high- limit thermostat
STB)
E14 5 burner start-up failures
E16 False flame signal
E17 Problem on the SU PCB
E34 Fan fault
E35 Supply and return reversed
Flame loss
E36
7703477.01 (1-03/18)
Bad connection
Sensor fault
Sensor not/poorly connected
No circulation
Sensor fault
Sensor not/poorly connected
No circulation
Bad connection
Sensor fault
Sensor not/poorly connected
No circulation
No ignition
Presence of spark but no flame
formation
Presence of the flame but insufficient
ionization (<3 μA)
Ionization current present when there
should not be a flame
Ignition transformer defective
Gas valve defective
The burner remains very hot: CO
Bad connection
Defective SU PCB
Bad connection
Fan defective
Bad connection
Sensor fault
Sensor not/poorly connected
Water circulation direction reversed
No ionization current
46
Check the wiring
Replace the sensor if necessary
Purge the air in the heating system
Check for water circulation (direction, pump, valves)
Check the water pressure
Check that the sensors are operating correctly
Check that the sensors have been correctly fitted
Check the cleanliness of the heat exchanger
Replace the sensor if necessary
Purge the air in the heating system
Check for water circulation (direction, pump, valves)
Check the water pressure
Check that the sensors are operating correctly
Check that the sensors have been correctly fitted
Check the cleanliness of the heat exchanger
Check that the heating pump is operating correctly
Check the wiring
Replace the sensor if necessary
Purge the air in the heating system
Check for water circulation (direction, pump, valves)
Check the water pressure
Check that the sensors are operating correctly
Check that the sensors have been correctly fitted
Check the cleanliness of the heat exchanger
Check that parameter P35 has been set correctly
Check spark generator wiring
Check the ionization/ignition electrode
Check the condition of the burner
Check the grounding
Defective control SU PCB
Purge the gas supply to remove air
Check that the gas valve is fully opened
Check the gas supply pressure
Check the operation and setting of the gas valve
Check that the air inlet and exhaust flue are not
blocked
Check the wiring on the gas valve
Defective control SU PCB
Check that the gas valve is fully opened
Check the supply pressure
Check the ionization/ignition electrode
Check the grounding
Check the wiring on the ionization/ignition electrode
Check the ionization/ignition electrode Check
the gas valve and replace if necessary
Recalibrate the CO2
too high
2
Check the wiring
Inspect the SU PCB and replace it if need be
Check the wiring
Replace the fan if need be
Check for adequate draw on the flue connection
Replace the sensor if necessary
Check for water circulation (direction, pump, valves)
Check that the sensors are operating correctly
Check that the sensors have been correctly fitted
Purge the gas supply to remove air
Check that the gas valve is fully opened
Check the supply pressure
Check the operation and setting of the gas valve
Check that the air inlet and exhaust flue are not
blocked
Check that there is no recirculation of flue gases