Alpha InTec2 26CE Installation And Servicing Instructions page 49

Error
Fault
code
80 Block - gas valve
driver issue
84 Combustion fault
Boiler operating in
reduced output mode
87 Block - gas valve
control
88 Block - gas valve
control
89 Flame signal unstable
90 Flame signal beyond
limit
91 Block - flame signal
lost during ignition
92 Fan speed max.
correction
93 Flame signal beyond
limit
94 Anomaly due to
combustion issues
95 Flame signal
discontinuous
96 Flue or air restriction
detected
98 Block - max. number
of software errors
99 General block
- - Reading out of range
Fault description
A fault has occurred on the PCB function that
controls the gas valve
A low supply pressure is detected on the gas line.
As a result the appliance output is limited and the
error code is displyed
A malfunction of one of the components that
control the gas valve has been detected
A malfunction of one of the components that
control the gas valve has been detected
A malfunction of one of the components of the air/
gas circuit - the flame is unstable
The flame signal is beyond the adjustment range
required for an extended period of time
The flame signal is lost repeatedly during ignition
The system has reached the maximimum
possible correction limit
The flame signal is beyond the adjustment range
required for a limited period of time
The anomaly is reported due to issues in the
combustion circuit
Discontinuity is detected in the flame signal due
to one of the components of the air/gas circuit
This occurs in the event an obstruction or
restriction is detected in the flue system
The maximum number of software errors possible
has been reached
A boiler anomaly has been detected
Sensor or parameter setting out of range
Alpha InTec² 26E, 30CE and 35CE - Error Codes and Fault Finding
Possible causes
Check gas valve electrical connection
Check gas valve operation
Replace gas valve and/or PCB
If normal conditions are restored the boiler
restarts without having to be reset
Check all gas isolation valves are fully open
Is the gas supply working pressure is correct
Check gas valve operation
Check PCB and gas valve electrical
connections
Replace PCB
Check as above for error code 87
Check the flue system is clear with no flue gas
recirculation
Check elecrode condition, replace if necessary
Check burner is clean and correctly earthed
Carry out a full calibration process as described
in Section 5.13
If fault persists replace gas valve and/or PCB
Check as above for error code 89
Carry out a full calibration process as described
in Section 5.13
If fault persists replace gas valve and/or PCB
Check as above for error code 89
Check as above for error code 89
Check the inlet gas pressure and gas rate are
correct
Check the flue system is clear with no flue gas
recirculation
Check elecrode condition, replace if necessary
Check burner is clean and correctly earthed
Carry out a full calibration process as described
in Section 5.13
If fault persists replace gas valve and/or PCB
Check the electrode condition and lead, replace
if necessary
Check the burner is clean and correctly earthed
Carry out full calibration process as described in
Section 5.13
If the fault persists replace the PCB
Check flue and air circuits are clear
Check fan function
Reset the boiler power supply
Replace the PCB
Press the boiler 'RESET' button
Reset the boiler power supply
Replace the PCB
Check the flow and DHW sensor resistance is
within range
Check the parameters are correctly set for
boiler model
49