iNSTallaTiON
Appliance shutdown
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Example: The set temperature is 65°C. At an actual temperature
of 61°C, for example due to a critical intake temperature, the
appliance detects an unacceptably high hot gas temperature. The
appliance temporarily reduces the set temperature to 61°C. The
appliance shuts down. Once the charge level has been under-
shot (this refers to the currently applicable set value, i.e. 61°C
and not 65°C), and when the hot gas temperature has dropped
again, the compressor restarts and operates with the original set
temperature (65°C). The set temperature is reduced again if the
appliance cannot reach this set temperature because the hot gas
temperature was previously too high.
Fan lead time
!
Material losses
Factory default setting: 30s
Only a service technician is permitted to change his pa-
rameter in line with factory instructions.
The set value specifies the number of seconds the fan runs before
the compressor is enabled.
Press the "Menu" button until "u" appears
on the display.
You can change this value using the
"Plus" and "Minus" buttons.
Replacement sensor
If the integral sensor is faulty, switch this parameter to replace-
ment sensor operation using the "Plus" button.
When replacement sensor operation is active, fault 4 is perma-
nently hidden. The default display shows the cylinder top temper-
ature instead of the mixed water volume.
IE0 Standard mode
IE1 Replacement sensor active
Set value limit
If set value limiting is active, the lower end of the setting range
for the set value is limited to 61°C. If set value limiting is inactive,
the set value can be adjusted to any value within the applicable
range (see Set value1/Set value2).
Lt 0 Standard mode
Lt1 Set value limiting active
13. Appliance shutdown
!
Material losses
If you disconnect the appliance from the power supply, it
is no longer protected against frost or corrosion.
Only disconnect the appliance from the power sup-
ply for longer periods if you are also draining the
DHW cylinder. See chapter "Maintenance/ Draining
the appliance".
The appliance can only be switched off by interrupting the power
supply.
Disconnect the appliance from the power supply at the fuse
in the distribution board or by unplugging the power plug if
the appliance is connected to a socket.
14. Troubleshooting
WARNING Electrocution
Troubleshooting must only be carried out by a qualified
contractor. Prior to all work on the appliance, isolate it
from the power supply.
!
Material losses
If you disconnect the appliance from the power supply, it
is no longer protected against frost or corrosion.
Only disconnect the appliance from the power sup-
ply for longer periods if you are also draining the
DHW cylinder.
For work inside the appliance, remove the appliance cover
(see chapter "Cleaning and maintenance/ Removing the ap-
pliance cover").
If necessary, remove the upper section of the casing jacket
(see chapter "Maintenance and cleaning/ Removing the cas-
ing ring").
Note
Refit the casing ring after completing the work. See chap-
ter "Maintenance and cleaning/ Fitting the casing ring").
Note
Refit the appliance cover after completing your work. See
chapter "Maintenance and cleaning/ Fitting the appliance
cover").
Note
Following an interruption to the power supply, compres-
sor operation remains blocked for at least one minute
while the appliance initialises.
If the compressor subsequently fails to start, it may be
blocked by additional safety devices (motor overload
relay, high pressure switch). This lockout can last be-
tween 1 and 10minutes.
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