Bosch Optiflow GWH16 3 CT E23 F6 L S2405, Руководство по установке

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6 720 817 545 (2016/02) Optiflow
Troubleshooting | 19
7 Troubleshooting
Fitting, maintenance and repair must only be carried out by authorised technicians. The following table describes the possible
solutions.
Display Description Possible solution
A0 Cold and hot temperature sensor damaged. ▶ Check temperature sensor and associated
connections.
▶ If the problem persists, call an authorised
service technician.
A1 Temperature inside the water heater housing is high
(heat exchanger calcified or sooted). The appliance automatically regulates its
performance to avoid overheating.
▶ If the problem persists, call an authorised
service technician.
A4 Faulty air temperature sensor. ▶ Call an authorised service technician.
A6 Faulty inlet water temperature sensor. ▶ Check temperature sensor and associated
connections.
▶ If the problem persists, call an authorised
service technician.
A8 Faulty mixed water temperature sensor. ▶ Check temperature sensor and associated
connections.
▶ If the problem persists, call an authorised
service technician.
A7 Faulty hot water outlet temperature sensor. ▶ Check temperature sensor and associated
connections.
▶ If the problem persists, call an authorised
service technician.
A9 Hot water outlet temperature sensor is not fitted
properly.
Low incoming gas pressure.
▶ Check temperature sensor and associated
connections.
▶ If the problem persists, call an authorised
service technician.
C7 Faulty fan. ▶ Check if the fan is properly connected to
ECU.
▶ If the problem persists, call an authorised
service technician.
CA Water flow above maximum specified value. ▶ Check incoming water pressure.
▶ Install a pressure limiting valve if necessary.
CF
C1
Blocked flue gas outlet.
Air flow insufficient for start-up.
▶ Remove dirt or any other impediment in the
flue and air inlet.
▶ Close and open a hot water tap.
▶ If the problem persists, call an authorised
service technician.
Table 11