Bosch C1210ES Specifications download pdf (Page 40)

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Maintenance and service

5.8 Program button

Fig. 63 “Program” key

5.8.1 Memorizing selected temperature

B Press buttons or to select desired

temperature.

B Hold “Program” button for 3 seconds to save

temperature.

When LCD stops blinking, temperature is saved in

memory.

Using “Program” function

In order to select memorized temperature

B Press “Program” key.

LCD shows pre-memorized temperature, which is now

the hot water selected temperature.

5.9 Locked condition

This condition is only valid for appliances with one or

more remote controls installed.

Fig. 64 Locked condition

Whenever LCD shows the temperature setting

cannot be adjusted because the appliance is in use by

another user who has already selected a different

temperature. Appliance will be automatically unlock 5

minutes after closing hot water tap.

6 Maintenance and service

6.1 Annual maintenance

(To remove front cover, see page 7.)

Venting System

• Venting system - inspect inside of flue pipe for any

blockage or restriction. Observe burner flames

during heater operation. (front cover must be

removed). Inspect the combustion air inlet pipe for

blockage or debris. Inspect combustion air and

exhaust terminations for blockage or debris.

Combustion Chamber

• Inspect burner observation window (Fig. 77, #14) for

cracks or spillage of flue gases. Observe burner

flames during heater operation. Flames should be

steady and blue with no signs of yellowing. Yellow

burner flames are an indication of improper

combustion. Refer to Section 3.4, page 24 & & 3.3,

page 10 of this manual to verify exhaust system and

combustion air supply meets manufacturer's

specifications.

Pressure Relief

• Manually open the pressure relief valve to ensure

proper operation.

Warning: Always shut off the electrical

power supply, shut off the manual gas

valve and shut off the water valves when

servicing.

Caution:

B Check and clean the complete water

heating system once a year.

B Carry out maintenance if necessary.

Immediately repair defects to avoid

damage to the system.

Annual maintenance table

1. Inspect venting system

2. Inspect heat exchanger

3. Inspect burner

4. Inspect condensate trap

5. Inspect water filter

Table 23 Annual maintenance

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 71 72

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Bosch C1210ES Specifications Page 40

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