Error Codes And Fault Findin - Benchmark Alpha InTec 24X Installation And Servicing Instructions

9 ERROR CODES AND FAULT FINDING
9.1 CARRY OUT INITIAL FAULT FINDING CHECKS
1. Check that gas, electrical and water supplies are available at the boiler.
i.e. Inlet gas pressure = 20 mbar - Electrical supply = 230/240 V ~ 50 Hz
CH water system pressurised to between 0.75 and 1.25 bar - DHW fl w rate is more than 2.5 litre/min
2. Carry out electrical system checks, i.e. Earth Continuity, Resistance to Earth, Short Circuit and Polarity with a suitable meter.
Note: These checks must be repeated after any servicing or fault finding
3. Ensure all external controls are calling for heat and check all external and internal fuses.
4. Check that the gas and water pipework has been connected to the correct connections on the boiler and all valves are open.
However, before any servicing or replacement of parts ensure the gas and electrical supplies are isolated.
9.2 ERROR CODES AND FAULT FINDING
Error Fault
code
01 Ignition failure
02 Overheat boiler lock
out
03 High flue the mostat
temperature
04 Gas valve electrical
connection fault
05 Heating fl w sensor
fault
06 DHW sensor fault
(InTec C, X, GS only)
08 Maximum number of
resets
10 Primary system
pressure low
12 Cylinder sensor fault
(InTec S and
FlowSmart only)
15 Internal wiring error
16 Fan fault
Fault description
Flame not detected during ignition sequence
Overheat thermostat or thermal fuse has operated
Flue thermostat intervention (flue tempe ature
over 113°C)
Gas valve wiring circuit fault detected
Incorrect fl w sensor resistance value
DHW sensor resistance value is incorrect
Maximum number of resets reached (5)
Primary pressure switch has operated
Incorrect cylinder sensor resistance
Incorrect wiring configu ation detected
Fan wiring fault or fan faulty
Gas supply
Check pressure tubes
Ignition electrode gap
Flame sensor electrode gap
Ignition generator or lead
Flame sensor electrode lead
Gas valve setting
Gas valve
PCB
Pump or fl w problem
Blocked heat exchanger
Air in heat exchanger
Overheat thermostat
Thermal fuse (if open circuit then replace
primary heat exchanger)
Blocked or restricted primary fl w
Heat exchanger air fl w blocked
Flue restriction
Flue sensor fault
Gas valve lead connection fault
Faulty gas valve
Faulty PCB
Flow sensor wire connections
Flow sensor faulty
DHW sensor wiring connection
DHW sensor faulty
Refer to fault history codes (INFO menu d9)
Check expansion vessel pressure (1 bar)
Leak in system
Expansion relief valve operated
Primary pressure switch
Cylinder sensor wiring connections
Cylinder sensor faulty
Check internal wiring connections to PCB
Combination boiler DHW sensor X4
System boiler link X14
Refer to wiring diagram
Check fan wiring connections
Fan fault
PCB fault
Alpha InTec C and X - Error Codes and Fault Finding
Possible causes
39