WarmFlow GS25A, Manual

Page: 50 / 66

MAINTENANCE INSTRUCTIONS
TR05A140.B1107 48
6.6.2 Ignition and ionisation electrodes
•
Isolate the electricity, water and gas supplies to the
appliance;
•
Unplug the electrode wires;
•
Slacken the fixing screws;
•
Remove the electrodes. When refitting the
electrodes, check that the seals are not damaged
and replace if necessary;
•
Reconnect the wires and reassemble the
components following the above procedure in
reverse order;
•
Switch on the power supply and restart the
appliance;
If the boiler does not restart, check the
positions of the electrodes. The ignition
electrode should be positioned with a 10mm
gap between it and the burner. The ionisation
electrode must not be touching the burner
surface.
6.6.3 Safety thermostat
•
Isolate the electricity, water and gas supplies to the
appliance;
•
Disconnect the connecting wire;
•
Unscrew the fixing screws and remove the
thermostat;
•
Replace the thermostat and re-assemble the
components following the above procedure in
reverse order;
6.6.4 Heating sensor
•
Isolate the electricity, water and gas supplies to the
appliance;
•
Unplug the connecting wires;
•
Replace the sensor (expecting some water loss)
and reconnect the wires;
•
Refill the system (see Sections 5.2) and check for
any leaks.
Ignition
electrode
Ionisation
electrode
Figure 41: Ignition and ionisation electrodes
Safety thermostat
Heating sensor
Figure 42: Safety thermostat and heating sensor