59
Installation instructions geoTHERM VWS/VWW 0020057444_01
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Description
Factory setting
Menu D: Perform diagnostics
In Menus D1 to D5 you can operate and test the heat
pump in diagnostic mode.
The diagnostic menus cannot be exited with any set-
ting apart from "Test = no" (Menu D1). An auto reset
occurs 15 minutes after the last button is actuated.
In the diagnostic mode, the pre-, minimum and
run-on times of the compressor, pumps and other
components are not heeded!
Malfunctions can occur if the diagnostic mode is fre-
quently turned on and off.
diagnosis
D1
refrigerant circuit
Test
>no
Comp High Pressure
11.9 bar
T outlet compresor
66 °C
Comp. low pressure
2.3 bar
T inlet compressor
0 °C
Test
: no/off/heating/hot water/cooling
1)
*
. Set the
operating mode for the heat pump in order to test
its behaviour.
Comp. high pressure
: Display of coolant pressure
Compressor output.
T outlet compressor
(compressor output, high pres-
sure): Display of temperature sensor T1.
*
Comp. low pressure
:Display of coolant pressure
Compressor input.
T inlet compressor
(compressor input, intake side):
Display of temperature sensor T2.
*
—
diagnosis
D2
refrigerant circuit
overheat
4 K
Subcooling
10 K
Temp TEV inlet
10 °C
Superheating
of the coolant calculated from T2
*
and
low pressure sensor. Only displayed when the com-
pressor is operating.
Subcooling
of the coolant calculated from T4
*
and
high pressure sensor. Only displayed when the com-
pressor is operating.
Temp TEV inlet:
Temperature at the inlet of the
thermal expansion valve
*
—
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 temperature
T6.
*
Current
return temperature
T5.
*
Status of
CH pump
: ON/OFF
CH pressure
(heating circuit pressure sensor).
Status of
auxiliary heating
: ON/OFF
—
diagnosis
D4
Heat Source
Brine pump
On
T Return Source
10 °C
T outlet Evaporator
9 °C
Brine pressure
1.5 bar
Status of
brine pump
: ON/OFF
T return source
: Temperature of the heat source,
T3.
*
T outlet evaporator:
Heat source temperature at
the outlet of the heat pump, T8.
*
VWS only:
Brine pressure
(Pressure sensor for heat source cir-
cuit; brine pressure)
—
Table 8.4 Parameters that can be set in the Code level (cont.)
1)
Cooling mode is only possible when using the VWZ NC 14/17 ac-
cessory, and only for VWS 14 and VWS 17 heat pumps.
*
see Figs. 1 and 2 in the appendix
Controller 8
Summary of Contents for geoTHERM VWS Series
Page 1: ...For the heating engineer Installation instructions geoTHERM Heat pump VWS VWW GB ...
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