Potterton Sirius Three WH-130, Installation, Operation And Maintenance Manual

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27. THERMAL FUSE REPLACEMENT OF HEAT EXCHANGER
The thermal fuse is positioned on the rear of the heat exchanger as shown in the figure, is electrically connected in series with
the safety thermostat. Its function is to protect the exchanger from overheating in case of insulation failure. When this occurs the
device appears on the display the anomaly E110 . If the cause is due to the rupture of the insulation it is necessary to remove the
heat exchanger and replace the rear insulation and the thermal fuse.
28. DISMANTLING, DISPOSAL AND RECYCLING
Only qualified technicians are authorised to service the device and system.
Before dismantling the appliance, be sure to disconnect the power supply, close the gas inlet shutoff valve and secure all of the
boiler and system connections.
Dispose of the appliance correctly according to the laws and regulations in place. The appliance and accessories cannot be
discarded along with normal household waste.
More than 90% of the materials that make up the appliance are recyclable.