Basic Settings and Service Procedures
HDS Middle Range / HDS Premium Range
Page 86 / 127
Service Manual 04.2008
<471: light
>=471: dark
3.2.4 Flame sensor brightness value
Flame sensor test. Brightness value display.
Display
Note
Explanation
45 °C
1023
Less than 0°C is displayed as
0°C.
3.2.5 Testing the temperature sensor
Temperature sensor test. Temperature display.
Display
Note
Explanation
50 °C
18°C
Use SET to access the tempera-
ture selector
switch test
3.2.6 Testing the water temperature setting and program switch
Initial image for temperature selector switch test
Display
Note
Explanation
55 °C
When you have finished with the
temperature selector switch test
you must select 55°C again.
Use SET to access the master
switch test.
You are in temperature selector switch test.
The temperature selected at the temperature
selector switch is displayed.
You are in master switch test.
The switch setting is „Cold Water Operation“
You are in master switch test.
The switch setting is „Hot Water ECO Operation“
You are in master switch test.
The switch setting is „Hot Water and Steam Operati-
on“
You are in master switch test.
The switch setting is OFF.
This display appears very
briefly only, as the unit is
switched off at the same time.