Flame Loss; Thermal Fuse Lockout - IDEAL Vogue System Gen 2 S15 Installation And Servicing

4.4 FLAME LOSS

If the boiler is restarted, does the boiler ignite for a
Is the gas pressure available at the boiler > 18 mbar?
Is 24vdc available at the gas valve during ignition?
Check spark generator and associated harness for
continuity, visual condition and position (refer to
Section 3.17). Are these functioning correctly?
Check ignition electrode and associated harness
for continuity, visual condition and position (refer to
Section 3.15). Are these functioning correctly?
Check syphon and condensate drain pipework
for blockage and rectify if necessary. Boiler now

4.5 THERMAL FUSE LOCKOUT

Isolate the electrical supply to the boiler and system
Ensure that the 2 way electrical connection to the
thermal fuse is pushed fully home and that the 8 way
connector is properly connected to the primary PCB.
Press RESTART, is the fault still present?
Disconnect the 8 way connector from the primary PCB.
Is there continuity across the black and yellow wires in
Disconnect the electrical connection to the thermal
fuse. Is there continuity across the fuse?
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SECTION 4 - FAULT FINDING
short time and then extinguish?
No
Yes
Yes
Yes
Yes
working ok?
Yes
pins 1 and 2?
No
No
Replace the heat exchanger
Yes
Check the detection electrode and associated harness
for continuity, visual condition and position. Check if the
condensate pipe is blocked. Check if the flue is blocked.
Replace as necessary
No
Check gas supply and rectify fault
No
Check wiring from gas valve to pcb and replace if
necessary, otherwise replace the main PCB
No
Replace spark generator and harness as
necessary
No
Replace ignition electrode and
associated harness as necessary
No
Replace gas valve
Yes
Replace the primary PCB
Yes Replace the wiring from the PCB to the
thermal fuse
Installation and Servicing