Bedienungsanleitung Siemens RMH760B (Seite 11 von 14) (Englisch)

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Siemens Operating Instructions RMH760B, RMK770 CE1B3133_en

Building Technologies A fault has occurred 2015-03-31

A fault has occurred

If a fault occurred in the plant, it will appear on the display; in

addition, the LED inside the

button will flash or will be on.

Proceed as follows:

LED flashes:

1. Press the

button to unlock.

2. If the LED keeps flashing, the fault still exists or the

button must be pressed again to unlock.

LED lit:

1. Rectify the fault.

2. If the LED is still lit, the

button must be pressed again

to unlock.

Unlocking is possible only after the cause of fault has

been removed.

In the event of fault, refer to the tips given on page 11.

If you cannot rectify the fault, contact your heating engineer.

Additional information about the display of faults:

Menu Faults current

Here, you can see which faults are currently present. The

following information about each fault is displayed:

· The cause (e.g. pump 1)

· The fault number (important for the heating engineer)

· Date and the time of day the fault first occurred

Menu Fault history

Here, each of the last 10 faults will be listed. The information

given is the same as that provided with current faults.

Menu Fault status signal bus

If your plant includes several interconnected devices, faults

of other controllers will be displayed on your controller.

Quick display of faults

If you keep the ESC button depressed for 2 seconds, the

current fault will be displayed.

Path:

Main menu > Faults

The following tips can help in the event problems occur

General

Before you call in your heating engineer, you should check

the following:

· Is your plant switched on? Check main switch and all

other switches

· Are all fuses of your plant in order?

· Is enough fuel in the tank?

· Have settings been changed by unauthorized persons?

(Time of day, setpoints, etc.)

· Does a fault appear on the display?

The heating always maintains the same room tempera-

ture:

· Check the room operating mode (only

lowers and

raises the room temperature)

· Has the actuator been disconnected from the valve?

Connect it!

The required room temperature is reached either too

early or too late:

· Change the time program

· When the building is well insulated, it takes more time to

cool down

The heat source does not operate any more:

· The burner has initiated lockout. Press the reset button!

· The heating circuit pump and / or the boiler pump does /

do not operate. Check the fuses!

· The fuel tank is empty or the fuel pump does not operate

The heat source operates, but there is no supply of

heat:

· Operate the heating valve manually

Saving energy without sacrificing comfort

· During the day, do not allow the room temperature to exceed

21 °C. Each additional degree increases heating costs by 6

to 7 %

· Guide values for room temperatures in living and working

spaces:

- During the day: Precomfort = 19 °C, Comfort =

20…22 °C

- During the night: Economy = 14…18 °C

- Longer nonoccupancy times, such as holiday periods:

Protection = 10 °C.

Protect objects sensitive to low temperatures, such as

plants!

· Air spaces for only short periods of time, with the windows

fully open

· Set thermostatic radiator valves in unoccupied rooms to

their frost protection position

· Closed shutters and blinds reduce heat losses

· Ensure that there are no curtains, furniture or other objects

in front of the radiators. They reduce the emission of heat

· Check heat energy consumption at regular intervals

If your plant uses a room temperature sensor (or room unit),

it should not be exposed to thermal disturbances since

these have an impact on the control function. For this rea-

son, following applies to the reference room where the

sensor is located:

· Avoid drafts through open doors

· Avoid heat gains caused by people, machines, lighting,

etc., near the sensor

· Ensure that air circulation near the sensor is not obstruct-

ed by curtains, furniture or other objects

· Set thermostatic radiator valves, if present, to their fully

open position

Energy savings do not only conserve our natural resources, they also ensure active environmental protection!

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