Overheat Lockout; Ignition Lockout - IDEAL Vogue System Gen 2 S15 Installation And Servicing

4.2 OVERHEAT LOCKOUT

Are the boiler and ch/cylinder system filled with water
and are all isolation valves and radiator valves open?
Is the flow/return differential across the boiler in
Check that the pump is rotating freely. Is the

4.3 IGNITION LOCKOUT

If the boiler is restarted, does it ignite for a short
Is the gas pressure available at the boiler > 18mBar?
Is 24Vdc available at the gas valve during ignition?
Unplug the gas valve, is the resistance between the
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 siphon and condensate drain pipework
for blockage and rectify if necessary. Boiler now
Installation and Servicing
SECTION 4 - FAULT FINDING
Yes
excess of 30°C?
Yes
differential now below 20°C?
Yes
Restart boiler
time and then extinguish
No
Yes
Yes
pins between 1kΩ and 10kΩ?
Yes
Yes
Yes
working OK?
No
Fill and vent the system and open all
isolation valves, then restart the boiler
No
Check the flow and return thermistors
No
Replace the pump, then restart the boiler
Yes Check the detection electrode and associated harness
for continuity, visual condition and position. Check if the
condensate pipe is blocked.
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 gas valve
No
Replace spark generator and harness as
necessary
No
Replace ignition electrode and
associated harness as necessary
No
Replace gas valve
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