Thermal Fuse In The Heat Exchanger; Check The Combustion - Potterton SIRIUS THREE FS 130 Installation, User And Service Manual

11 Maintenance
Fig.170
4
6
Fig.171
MW-3000214-01
124
4. Reattach the elbow for the air supply tube using the collar.
5. Reconnect the gas valve pipe.
6. Reconnect the hose pipe.
7. Reconnect the connector to the gas valve.
8. Reconnect the 2 wires between the safety thermostat on the
9. Reconnect the ignition electrode and the flame detection sensor.
10. Reconnect the power supply and command cables on the fan.
5
MW-2000817-02
11.2.7
The thermal fuse is located in the rear part of the heat exchanger and is
connected in series to the safety thermostat.
The function of the thermal fuse is to ensure the protection of the heat
exchanger against the danger of overheating if the insulation malfunctions.
Intervention by the device is signalled by the on-screen display of the
anomaly 110:Lockout SLT.
2
1
11.2.8
1. Check the combustion with the maximum heat input.
combustion chamber door and the pin under the ignition electrode.

Thermal fuse in the heat exchanger

1 Rear of the heat exchanger
2 Thermal fuse
Important
When replacing the thermal fuse, also replace the insulating
surface inside the heat exchanger. This insulating surface has
been damaged by overheating.

Check the combustion

Checking combustion (maximum heat input)
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