Download Baxi MainEco Combi 35 Service manual

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Baxi MainEco Combi and System 24 - 28 - 35 / 18 - 24
9. Troubleshooting
Lock out (Status signals)
Status
signals
Description
Error code 4
(4 times red
signal)
Fan fault
Error code 5
(5 times red
signal)
Parameter error
Error code 6
(6 times red
signal)
Miscellaneous
Probable causes
4
4
4
Checking / solution
External draught over the
4
boiler
4
Defective gas/air unit
4
Bad connection
Check for adequate draw on the chimney connection
Replace the gas/air unit
Check the wiring
4
Safety parameters not
found
4
ResetdF/dU code with Recom software, controller or
service tool
4
Several possible causes
4
The fault codes can be read with the Recom service
software, a suitable controller or a service tool
Lock out (Error code - e[KK)
Error
code
Description
e[00
Storage unit PSU
parameter not found
e[01
The safety parameters
are incorrect
e[02
Flow temperature
sensor short circuited
e[03
e[04
e[05
Flow temperature
sensor open circuit
Flow temperature too
low
Flow temperature too
high
Probable causes
4
Bad connection
4
Check the wiring
4
Bad connection
4
Check the wiring
4
PSU defective
4
Replace PSU
Check the wiring
4
Check that the sensors are operating correctly
4
Sensor not or badly
connected
Bad connection
4
4
4
Check that the sensor has been correctly fitted
4
Sensor fault
4
Replace the sensor if necessary
Check the wiring
4
Check that the sensors are operating correctly
4
Sensor not or badly
connected
Bad connection
4
4
4
Check that the sensor has been correctly fitted
4
Sensor fault
4
4
Replace the sensor if necessary
Vent the air in the heating system
No circulation
4
4
Check the water pressure
4
Bad connection
4
Check the wiring
Sensor not or badly
connected
Sensor fault
4
4
Check the circulation (direction, pump, valves)
4
Check the cleanliness of the heat exchanger
4
Check that the sensors are operating correctly
4
Check that the sensor has been correctly fitted
4
Replace the sensor if necessary
4
Check that the sensor has been correctly fitted
4
Check the wiring
4
Check that the sensors are operating correctly
4
Check that the sensor has been correctly fitted
4
Check the wiring
4
Check that the sensors are operating correctly
4
Vent the air in the heating system
4
Check the water pressure
4
Check the wiring
4
Check the circulation (direction, pump, valves)
4
Check the cleanliness of the heat exchanger
4
Check that the sensors are operating correctly
4
Check that the sensor has been correctly fitted
4
Replace the sensor if necessary
4
4
e[06
Return temperature
sensor short circuited
4
Return temperature
sensor open circuit
4
4
Sensor fault
4
e[08
e[09
Return temperature too
4
low
Return temperature too 4
high
4
02092014 - 7619497-02
Sensor not or badly
connected
Bad connection
Sensor fault
Sensor not or badly
connected
Bad connection
4
4
e[07
Checking / solution
No circulation
Bad connection
Sensor not or badly
connected
Sensor fault
67