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▶ Operate the appliance.
1
Fig. 46 Replacing the flue gas temperature sensor
10.16.4 Replacing the coding plug
NOTICE
Damage due to electrostatic charge
Printed circuit boards in electronic components are susceptible to
electrostatic charge (ESD).
▶ Wear an earthed wrist strap when working on electronic components
( § 7.1, p. 18).
▶ Switch off the appliance.
▶ Open the top appliance cover ( § 7.2, p. 18).
▶ Detach the bracket of the burner control unit [1].
▶ Push the burner control unit to the left [2].
▶ Lift the front of the burner control unit so the coding plug is easily
accessible [3].
▶ Remove the coding plug [4].
▶ Attach new coding plug.
1.
4.
Fig. 47 Replacing the coding plug
Condens 7000 WP – 6721841195 (2022/01)
0010036539-001
3.
2.
0010035231-001
▶ Mount the burner control unit again by following the above steps in
reverse order.
▶ Screw down the bracket of the burner control unit.
▶ Close and secure the top panel.
▶ Operate the appliance.
10.16.5 Replacing the air/gas ratio control valve
Take the replacement interval of the air/gas ratio control valve into
account.
▶ If the air/gas ratio control valve is defective or depending on the
service life, replace it ( table 18, page 36).
▶ Switch off the appliance.
▶ Close gas isolator.
▶ Follow the replacement instructions provided when replacing the air/
gas ratio control valve.
▶ Open the gas cock.
▶ Operate the appliance.
▶ Check the tightness of all gas-carrying components.
Inspection and maintenance
37
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