Error Codes And Fault Finding - Alpha E-Tec 25R Installation And Servicing Instructions

10 ERROR CODES AND FAULT FINDING

10.1 CARRY OUT INITIAL FAULT FINDING CHECKS
In the event of a suspected functional fault with the boiler, carry out initial fault finding checks to establish the
cause.
1. Check the correct gas, electrical and water supplies are available at the boiler.
2. Check that any boiler controls fitted are working and in an 'ON' position.
3. Carry out electrical supply and connection checks and check all fuses.
Where an error code is displayed use the following tables to identify the fault and possible causes.
10.2 ERROR CODES AND FAULT FINDING
If any fault or anomaly persists, contact Alpha Heating Innovation Technical Helpline.
The history of errors can be viewed in the 'INFO' menu - d9
Error
Fault
code
01 Ignition failure
02 Overheat boiler lock
out
03 High flue thermostat
temperature
04 Gas valve electrical
connection fault
05 Heating flow sensor
fault
06 Internal wiring error
07 Chimney sweep
function active
08 Maximum number of
resets
12 Cylinder sensor fault
16 Fan fault
20 Flame sensing fault
23 Heating return sensor
fault
24 Control panel button
fault
Fault description
Flame not detected during ignition sequence
Overheat safety thermostat or flue thermal fuse
(113°) has operated. If the thermal fuse has
operated, the cause of its intervention must be
repaired and then it must be replaced.
Flue thermostat intervention (flue temperature
over 108°C)
Gas valve wiring circuit fault detected
Incorrect flow sensor resistance value
Incorrect wiring configuration detected
Chimney sweep function is active. E07 is
displayed on the Climatic remote control only
Maximum number of resets reached (5)
Incorrect cylinder sensor resistance
Fan wiring fault or fan faulty
False flame detection
Flame detected but gas valve is not open
Incorrect return sensor resistance value
Control panel button stuck in the on position
Gas supply
Check pressure tube
Ignition and flame sensor electrode gaps
Ignition generator or lead
Gas valve setting
Gas valve
PCB
Pump or flow problem
Blocked heat exchanger
Air in heat exchanger
Overheat thermostat
Thermal fuse
Air in the heat exchanger
Blocked or restricted primary flow
Heat exchanger air flow blocked
Flue restriction
Flue sensor fault
Pump fault
Gas valve lead connection fault
Faulty gas valve
Faulty PCB
Flow sensor wire connections
Flow sensor faulty
Check internal wiring connections to PCB
Resistor R14 on plug X14
Refer to wiring diagram
Engineers function activated by pressing the
reset button for 8 seconds
Refer to fault history codes (INFO menu d9)
Cylinder sensor wiring connections
Cylinder sensor faulty
Check fan wiring connections
Fan fault
PCB fault
Check electrode and lead
PCB fault
Return sensor wire connections
Return sensor faulty
Check for jammed control panel buttons
Check for jammed PCB buttons
Alpha E-Tec 25R - Error Codes and Fault Finding
Possible causes
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