Bosch Greentherm T9900 SE/i 199 - Page 64

Troubleshooting
Greentherm T9900 SE/i – 6 720 813 635 (2019/03)
64
B1 Internal Adjust
▶ Touch symbols or until display shows B1 Internal
Adjust.
Fig. 62 B1 Internal Adjust - P1 Active
▶ Touch the symbol to enter B1 Internal Adjust.
1)
B1 Internal Adjust will start automatically.
▶ Wait approximately 60 seconds until a green check mark
appears in the display, which indicates that the B1 Internal
Adjust is completed. Do not interfere with the appliance
during this period.
Fig. 63 B1 Internal adjust is completed
L2 Gas Adjust
▶ Touch the symbol to enter L2 Gas Adjust.
L2 Gas Adjust value is shown (ionization).
▶ Change L2 Gas Adjust parameter until ION value is
according to table 26.
▶ Increase L2 Gas Adjust parameter to increase ION value
and vice-versa.
Fig. 64 L2 Gas Adjust - ION value
▶ Touch the symbol to save value.
▶ Touch the symbol to return to the main menu.
Minimum power adjust is completed.
Table 26 L2 ION values
Gas and Air adjustment is complete.
8.12.3 Restore factory values
To restore factory values for combustion settings,
▶ Proceed with the following steps.
To enter P1 and P2 menu,
▶ Access to AU Technical Settings menu.
▶ Touch symbols or to select CA menu.
Display shows CA Combustion Adjust.
▶ Touch the symbol to enter CA menu.
▶ Touch symbols or to select MA - Manual Adjust
menu.
▶ Touch the symbol to enter P1 or P2 menu.
Reset Parameters P1
After enter MA - Manual Adjust,
▶ Access to menu P1.
1) B1 Internal Adjust will calculate automatically the amount
of air in low fire (P2). This method uses P1 values to start
calculation.
L2 Gas Adjust
1)
1) For information on unit’s configuration (gas type: NG/LPG
and capacity: 160 000BTU/199 000BTU), see rating plate
(chapter 3.3).
199 000 BTU 160 000 BTU
Natural Gas
ION (L2 Gas Adjust) 125 - 160 100 - 130
LP Gas
ION (L2 Gas Adjust) 150 - 180 100 - 135
6720816815-39.1V
ION
17
128
L2 Gas
Adjust