Bosch GWH C 920 ES Instruction Manual page 38

Maintenance and service
Final Readings
P1 CO Reading:
2
P2 CO Reading:
2
D. Returning to Service:
1. Return slotted screw cover to original position.
2. Reinstall Torx cover.
3. Remove CO analyzer probe and reinstall flathead
2
screw with gasket in exhaust collar.
4. Press ON/OFF button to turn OFF the heater and
then turn ON the heater.
5. Heater is ready for normal operation.
1
2
Fig. 62 Adjusting P1 CO
Fig. 63 Adjusting P2 CO
38
% CO
2
% CO
2
3
6720608836-04.1AL
level
2
6720608836-05.1AL
level
2
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