Bosch Greentherm T9800 SEO160, Installation And Operating Instructions Manual

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Problem solving
Greentherm T9800 SEO 160/199 | SECO 199 – 6 720 817 281 (2018/12) 46
CA Water flow above 9.2gpm. ▶ Disconnect the appliance and purge hydraulic circuit
to remove air.
1)
▶ Install water flow restrictor.
1)
▶ Check water pressure does not exceed
150psi.(

section
3.2
).
CE Flue blockage detected during operation due to
excessive pressure on the siphon. ▶ Reset error (press and hold on/off button for 3
seconds).
If the problem persists:
▶ Check air openings and exhaust opening for
obstructions and reset the error.
▶ Check if the air filter is dirty or clogged.
▶ Perform gas and air tuning (

section 8.11).
1)
▶ Contact Bosch support line for additional
information and assistance in case of installation in
dusty areas.
CF Flue blockage detected during operation due to
insufficient combustion air. ▶ Reset error (press and hold on/off button for 3
seconds).
If the problem persists:
▶ Check air openings and exhaust opening for
obstructions and reset the error.
▶ Check if the air filter is dirty or clogged replace it if
needed.
▶ Perform gas and air tuning (

section 8.11).
1)
If the problem persists:
▶ Contact Bosch support line for additional
information and assistance in case of installation in
dusty areas.
E0 Electronic control unit internal error. ▶ Reset error (press and hold on/off button for 3
seconds).
If the problem persists:
▶ Replace electronic control unit.
1)
E1 Hot water temperature above 194 °F (90 °C).
Appliance burner cut off to prevent scalding and
reactivation after cooling down. ▶ Disconnect the appliance and purge hydraulic circuit
to remove air.
If the problem persists:
▶ Reduce setpoint temperature to minimize
temperature instabilities.
E3 Flue gases temperature above 167 °F (75 °C) or 2
minutes above 145 °F (63 °C).
Appliance burner cut off to prevent overheating. ▶ Descale appliance (

section 7.3).
1)
▶ Reset error (press and hold on/off button for 3
seconds).
If the problem persists:
▶ Check sensor resistance [15] (

section 11) and
replace the sensor if it is not according to
specification.
1)2)
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