Doc No. 700015 Page 34 of 36
7. Replacing
Parts.
7.1 Burner Controller Replacement
Step 1 Slacken screw in burner lid and open the
right hand burner access door.
Step 2 Undo 2 screws from the lid to the
controller bracket and remove. Disconnect
burner controller from the wiring harness.
Step 3 Disconnect the HT Lead from burner
controller.
Step 4 Remove the two screws attaching the
controller to the bracket and remove.
Step 5 Fit new burner controller
Step 6 Refit HT leads and refit burner controller
to wiring harness.
Step 7 Test product and close access doors.
7.2 Air Pressure Switch Replacement
Step 1 Disconnect the two silicone impulse
tubes and three wiring connections making note
of replacement positions.
Step 2 Remove the two screws as shown below.
Step 3 The air pressure switch can now be
removed.
Step 4
Fit the new air
pressure switch
ensuring
the
impulse tubes are
connected as
shown opposite.
Step 5
Test product and
close access
doors.
Turn of gas any electrical supplies to
the heater before starting repair work.
