Vaillant geoTHERM VWS Series Installation Instructions Manual page 59

Display shown
Menu D: Perform diagnostics
diagnosis
refrigerant circuit
Test
Comp High Pressure
T outlet compresor
Comp. low pressure
T inlet compressor
diagnosis
refrigerant circuit
overheat
Subcooling
Temp TEV inlet
diagnosis
Central Heating
Current flow temp.
Current return temp
CH pump
CH pressure
Auxiliary heater
diagnosis
Heat Source
Brine pump
T Return Source
T outlet Evaporator
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
Installation instructions geoTHERM VWS/VWW 0020057444_01
Description
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.
Test: no/off/heating/hot water/cooling
D1
operating mode for the heat pump in order to test
its behaviour.
>no
Comp. high pressure: Display of coolant pressure
11.9 bar
Compressor output.
66 °C
T outlet compressor (compressor output, high pres-
2.3 bar
sure): Display of temperature sensor T1.
0 °C
Comp. low pressure:Display of coolant pressure
Compressor input.
T inlet compressor (compressor input, intake side):
Display of temperature sensor T2.
Superheating of the coolant calculated from T2
D2
low pressure sensor. Only displayed when the com-
pressor is operating.
4 K
Subcooling of the coolant calculated from T4
10 K
high pressure sensor. Only displayed when the com-
10 °C
pressor is operating.
Temp TEV inlet: Temperature at the inlet of the
thermal expansion valve
Current flow temperature T6.
D3
Current return temperature T5.
Status of CH pump: ON/OFF
27 °C
CH pressure (heating circuit pressure sensor).
24 °C
Status of auxiliary heating: ON/OFF
Off
1.2 bar
Off
Status of brine pump: ON/OFF
D4
T return source: Temperature of the heat source,
*
T3.
On
T outlet evaporator: Heat source temperature at
10 °C
the outlet of the heat pump, T8.
9 °C
VWS only:
1.5 bar
Brine pressure (Pressure sensor for heat source cir-
cuit; brine pressure)
1)
* . Set the
*
*
* and
*
*
*
*
Controller 8
Factory setting
—
—
* and
—
—
59