repaired
Disconnected
TA
Failure in the thermo-sensor for ambient temperature. It is disconnected or
turned off. The heat pump stops working but can be switched on again after the
fault has been repaired.
TA short
circuit
Failure in the thermo-sensor for ambient temperature. There is a short circuit.
The heat pump stops working but can be switched on again after the fault has
been repaired
High pressure
The temperature at the compressor outlet has exceeded the maximum allowable.
The heat pump stops but can be switched on again after the temperature drops
below the set high pressure protection limit. It is also registered when the high
pressure switch is activated, where the heat pump stops working until the high
pressure switch returns to its normal state and the alarm is not cleared
Low pressure
Registered when the low pressure switch is activated (not used)
Low voltage
A supply voltage below 190V AC is measured. The heat pump stops working
until the voltage has reached the allowable range.
High voltage
Supply voltage over 255V AC is measured. The heat pump stops working until
the voltage has reached the allowable range
High current
Current exceeds 7.5A The heat pump stops, but can be switched on again after
the compressor re-start protection time expires.
Long
defrosting
Defrosting takes longer than usual
Frequent
defrosting
The time between two defrostings is less than allowable
Outside the
working range
The measured outside ambient temperature is outside the allowable operating
range of the heat pump. The heat pump will not work
Blocked 4-way
valve
Possibly blocking of the 4-way valve in the defrost position, resulting in incorrect
operation of the heat pump in heating mode. The heat pump will not work until
the alarm is cleared.
High pressure
alarm
Registered if within 1 hour the maximum allowable temperature at the outlet of
the compressors is exceeded for 3 times. The heat pump will not work until the
alarm is cleared
SCREENS FOR SETTING. WAYS OF CHANGING THE PARAMETERS.
When setting the parameters required for the controller, the display is similar to one of the following:
Selection from a list
– Red line shows the marked row. Use the arrows up and down to move the
red line. Pressing the Enter button selects the option of the highlighted line. If there are more rows
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