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Probe Replacement Instructions
Isolate the gas and electrical supplies before carrying out the instructions below
1. Remove the access panel from the side of the unit.
2. Disconnect the spark and flame sensor cables from the ignition transformer and ignition controller
3. Remove the probe assembly access panel via the 4 off 10mm retaining bolts on the inside of the heater
next to the ignition control box.
4. The probe assembly can be seen on the left hand side with the access panel removed.
5. Remove the 2 off 10mm retaining bolts from the heat exchanger tabs.
6. Remove the probe assembly bracket.
D301353 Issue 0 May 2023
Page 3 of 20
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