Bosch 660 EF Specifications download pdf (Page 44)

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Troubleshooting

7.7 Check for an Error Code (Using the remote controller)

Error displays on the remote controller

If there is a problem with the unit, a numerical error code

will flash on the remote controller. If this occurs, take

appropriate measures as listed below. When an error

code appears, the display and the operation light will

flash together.

Fig. 44

Contact Bosch Thermotechnology if:

• Any other error code appears.

• An error code is indicated again after the above

actions were followed.

• There are any other questions.

Error Code Cause Action

Ignition error. Check whether the gas valve is open. Press

the power button to turn the unit off, open a

hot water fixture, and turn the unit back on.

If the flashing number doesn't return the

problem is solved.

Abnormal combustion, low gas supply pres-

sure.

Have a professional check the gas supply

pressure. Contact the nearest Bosch agent.

Abnormal combustion. Contact the nearest Bosch agent.

Table 15

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Bosch 660 EF Specifications Page 44