Danfoss Heat Pump Anleitung zur Fehlerbehebung PDF herunterladen (Seite 32)

VMIFB202

Room sensor

The image shows one of the models of room sensor available

The room temperature sensor has a temperature sensor that provides a further value that the control system can use when calculating

the supply temperature. The impact of the room sensor in the calculation can be set in the menu HEAT CURVE -> ROOM FACTOR.

Default setting for ROOM FACTOR is 2 but can be adjusted from 0 (no impact) to 4 (large impact).

The dierence between the desired and actual indoor temperature is multiplied by the set value for ROOM FACTOR. The set point on

the heating system supply line increases or decreases with the result depending on whether there is a decit or surplus of heat.

The table below shows examples of how the set point for the supply line is aected at CURVE 40 with dierent settings for ROOM

FACTOR 0-4.

In the event of a heating decit:

ROOM FACTOR DESIRED ROOM TEMPERATURE ACTUAL ROOM TEMPERATURE SETPOINT VALUE FOR SUPPLY

0 20°C 18°C 40°C

1 20°C 18°C 42°C

2 20°C 18°C 44°C

3 20°C 18°C 46°C

4 20°C 18°C 48°C

In the event of a heating surplus:

ROOM FACTOR DESIRED ROOM TEMPERATURE ACTUAL ROOM TEMPERATURE SETPOINT VALUE FOR SUPPLY

0 20°C 22°C 40°C

1 20°C 22°C 38°C

2 20°C 22°C 36°C

3 20°C 22°C 34°C

4 20°C 22°C 32°C

Installation

The cover for the screw is removed and rear front is installed.

The terminal block is removed for easier installation.

The cable is screwed in (2-core can be connected on any terminal, max 100m)

The terminal block is reinstalled on the pin and the cover installed.

In the heat pump the room sensor must be connected to terminal 303-304, does not apply to Atec or Robust. See wiring diagram for

relevant heat pump.

If the heat comfort does not correspond to the set desired temperature the

Room temperature can be calibrated by holding in both buttons for 15 seconds until it starts to ash.

Then set the actual room temperature and wait 10 seconds until it has stopped ashing.

If `--` is displayed it indicates that no outdoor temperature has been received and it may indicate that there is no contact with the

outdoor sensor’s resistor or that there is a cable break.

The room sensor’s display shows the actual indoor temperature in normal mode.

To display the outdoor temperature press the up and down buttons at the same time.

To set the desired indoor temperature, press either the up or down buttons.

If the heat pump has an active alarm the text AL appears in the display of the room sensor.

Troubleshooting Guide Room sensor digital

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Danfoss Heat Pump Anleitung zur Fehlerbehebung Seite 32