Bosch Greentherm T9900 SE 160, Инструкция по установке и эксплуатации

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Problem solving
71 Greentherm T9900 SE/i – 6 720 813 635 (2019/03)
Table 29
Note: If the appliance is locked for safety reasons, information is shown on the display to give more information on the problem.
Once the problem is solved, you may have to reset the error (touch and hold
button for 3 seconds). Error reset will only take
effect if error is visible on the display.
FA Gas leakage in the gas path (gas valve or gas
manifold shut-off valves). ▶ Replace the gas valve and/or gas manifold.
1)
▶ After gas valve and/or gas manifold replacement
perform gas and air tuning (

section 8.12).
1)
FC Touch screen key pressed for more than 20
seconds. ▶ Release the touch screen key.
▶ Clean the touch screen display.
Display reads
SOLAR but without
existence of solar
thermal system.
Display reads
SOLAR and water
temperature low.
Power demand lower than appliance minimum
output power. ▶ Increase hot water flow.
▶ increase setpoint temperature.
Display shows a red
X. HMI (display) is not communicating with Electronic
Control Unit. ▶ Reset the appliance by unplugging it for some
seconds (at least 10) and plug it back in.
▶ Replace the HMI (display) and/or wire connections
and/or electronic control unit.
High pitch noise
(whistling) Combustion flame with gas in excess or lack of air. ▶ Check if gas type is correct (

section 6.8).
1)
▶ Check gas inlet pressure (

section 4.13).
1)
▶ Perform gas and air tuning (

section 8.12).
1)
Low pitch noise
with vibration
(rumbling) Combustion flame with air in excess or lack of gas. ▶ Check if gas type is correct (

section 6.8).
1)
▶ Check gas inlet pressure (

section 4.13).
1)
▶ Perform gas and air tuning (

section 8.12).
1)
1) only to be carried out by qualified contractors.
2) see temperature resistance charts in fig. 67 and 68.
Display Description Solution