Adapting the appliance to the heating system
84
Installation instructions geoTHERM 0020051574_04
9
Display shown
Description
Factory setting
Diagnosis
D2
Coolant circuit
Superheating
6 K
Subcooling
10 K
Temp TEV inlet
10 °C
Compressor
On
Superheating:
Superheating of the coolant calculated
from T2* and low pressure sensor. Only dis-
played when the compressor is operating.
i
If the display "-50 °C" appears, the tem-
perature sensor T2 on the compressor
inlet is faulty. No warning message is
recorded in the Error History.
Subcooling:
Subcooling of the coolant calculated
from T4* and high pressure sensor. Only dis-
played when the compressor is operating.
i
If the display "--°C" appears, the tempera-
ture sensor T4 on the Temp TEV inlet is
faulty. No warning message is recorded in
the Error History.
Temp TEV inlet:
Temperature at the inlet of the ther-
mal expansion valve.*
Compressor:
Compressor status:
ON/OFF/x min. (Time in minutes until the start
of the compressor when a heat request is
present)
—
Diagnosis
D3
Central Heating
Current flow temp.
27°C
Current return temp
24 °C
CH pump
OFF
CH pressure
1.2 bar
Auxiliary heater
OFF
Current flow temp.:
Current flow temperature T6.*
Current return temp:
Current return temperature
T5.*
CH pump:
CH pump status: Rotation speed in %/OFF.
CH pressure:
Pressure in the heating circuit (heating
circuit pressure sensor).
Auxiliary heater:
Status of auxiliary heating:
ON/OFF
—
9.7
Menu D: Carrying out diagnoses*
* see Figs. 1 and 2 in the appendix
