Troubleshooting
65
Greentherm T9900 SE/i – 6 720 813 635 (2019/03)
▶ Touch symbols
or
to select
Reset Parameters
.
▶ Touch the symbol
.
The factory default values for
P1
are restored.
Reset Parameters P2
After enter
MA - Manual Adjust
,
▶ Access to menu
P2
.
▶ Touch symbols
or
to select
Reset Parameters
.
▶ Touch the symbol
.
The factory default values for
P2
are restored.
8.12.4 Additional combustion settings
The parameters and operation modes presented in this section
are available for certification purposes and advanced
troubleshooting with guidance from BOSCH support line.
For optimal operation, use the default settings.
Ionization Control
Default setting is
Off
.
▶ Only a qualified technician can change this parameter.
Minimum power and check (P2)
▶ Only a qualified technician can change this parameter.
IC - Ionization control
Default setting is
On
.
▶ Only a qualified technician can change this parameter.
PP P2A2
Default setting is
On
.
▶ Only a qualified technician can change this parameter.
P0 Min. Power
Ionization control
Default setting is
Off
.
▶ Only a qualified technician can change this parameter.
8.13 CO emissions check
In case air/gas combustion adjustment has been performed
check emissions using reference values in tables 27 and 28.
8.13.1 Access to measuring port
WARNING:
Only a qualified technician can perform these steps.
This can cause carbon monoxide poisoning.
▶ Follow the instructions carefully and avoid leaving the
measuring port open.
Allow the appliance to stabilize before performing CO readings.
Let appliance warm up and wait for 2 or 5 minutes for each CO
readings.
This will avoid wrong CO readings.
▶ Open a hot water tap and let the appliance work for 2 or 5
minutes.
▶ Remove the screw from the flue adaptor on the left side of