BLADES LCS BLADE TWIN PLUS TPWH60, Installation & Service Manual

Page: 80 / 128

50
Alpha E-Tec S 20, 30 and 35 - Error Codes and Fault Finding
Error
code
Fault Fault description Possible causes
Flue sensor fault
Loss of
communication with
external control (Alpha
Climatic)
Low supply voltage
Loss of flame
rectification
Loss of flame
rectification
High ) T
Reduced burner
output
Climatic RF
communication fault
Pump fault
Air in the pump
Return/flow sensor
fault
Return/flow sensor
fault
29
31
37
38
43
45
47
51
60
61
75
76
Flue sensor resistance out of range
Loss of connection between the boiler and Alpha
Climatic control unit
Insufficient supply voltage to operate boiler
Flame detected but signal lost. Ignition retries
after fan purge
Repeated loss of flame signal during operation
This fault can occur if the flue is exposed to high
wind conditions (shown as E38 in the fault code
history in the INFO menu)
The boiler detects a sudden, unexpected increase
in
) T between the flow sensor and the system
return sensor
Flue thermostat has sensed high flue gas
temperature (110°C) and reduced the burner
output to prevent damage. If the temperature
continues to rise the boiler will lock out and E03
will be displayed
Error between communication of the Climatic
transmitter and boiler receiver
The pump is stuck or there is an electrical pump
fault
Restricted CH flow due to air or a circuit restriction
Possible failure of one or both sensors
Possible failure of one or both sensors
Check sensor wiring and connections
Check sensor resistance
Remote control or receiver connection wiring
Distance or interference of RF signal
Remote control or receiver fault
(Check batteries if using RF controller)
Check mains power supply
Check for bad cable connections etc
Check flame sensing electrode and lead
Check for flue gas recirculation
Check the gas valve
Check flue system and termination
Check gas supply/working pressure
Check/adjust combustion settings
Check burner earth connection
Check as above for error code 38
Burner input is limited for boiler protection,
and once the right
)
T is restored, the boiler
resumes regular operation. Make sure there
is water circulating in the boiler, that the
pump is configured according to the system
requirements and that the return sensor is
correct.
Air in heat exchanger
Restricted primary flow
Heat exchanger air flow blocked
Flue restriction
Flue sensor fault
Pump fault
Batteries require replacing
Check the pump operation, it may be necessary
to free the pump shaft
Check the pump wiring
Replace the pump
Check Flow and Return valves are open
Check for correct system pressure
Check the system is purged properly
Check sensor wiring and connections
Check sensor resistance
Check sensor wiring and connections
Check sensor resistance