Danfoss DHP-H User Manual download pdf (Page 41)

Danfoss – 41VUBMA102

Message Meaning Cause Remedy

SENSOR HOT

WATER

Fault in the hot water sensor.

No hot water production.

Electrical fault. Contact your

installer.

ALARM

ROOM

SENSOR

The actual room temperature is

not displayed. To calculate the

supply temperature’s desired

value, use 20°C instead.

Electrical fault. Contact your

installer.

ERR PHASE

SEQ.

The compressor in the heat

pump is operating in the

wrong direction and this means

that only the auxiliary heater is

maintaining heating.

The phase

sequence changed

when changes

were made in the

electrical installa-

tion of the house.

Contact your

installer.

HIGH RETURN The temperature of the water

that returns from the radiators

is too high and prevents the

heat pump from working

Insufficiently

opened radiator/

floor loop thermo-

stats.

Ensure that all

thermostat valves

are fully open.

The following table only applies to installations that use ground water as refrigerant.

Message Meaning Cause Remedy

BRINE OUT Brine lower than set tempera-

ture. The compressor stops and

there is no hot water produc-

tion.

The lowest set

brine temperature

has been reached.

The system resets

itself when the

temperature has

risen to the set

value.

BRINEFLOW

LOW

The flow switch was not active

during the latest start. The

compressor stops and there is

no hot water production.

Brine’s flow is low. Contact your

installer.

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Danfoss DHP-H User Manual Page 41

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