Operating instructions

62
730.138 | 08.12
EN
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The solar circuit has stopped because
the controller is conducting a priority
test. This test checks whether, instead
of the second-priority storage tank, the
first-priority storage tank could also be
loaded.
This test can take several minutes, as the
collector array must heat up sufficiently.
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Solar circuit is running due to interval
test.
The collector's heat transfer fluid is be-
ing transported to the sensor.
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The solar circuit is running in order
to protect the collector from icing up. –
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Despite the fact that the pump is
running, the temperature difference
between the collector and the external
heat exchanger is too great.
-> Volume flow is too low.
Check the solar circuit's hydraulics,
pump, valves, and shut-off devices.
If necessary, bleed the system, open
the shut-off devices, and flush out
blockages.
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Despite the fact that the pump is
running, the temperature difference
between the external heat exchanger
and the storage tank is too great.
-> Volume flow is too low.
Check the loading circuit's hydraulics,
pump, valves, and shut-off devices.
If necessary, bleed the system, open
the shut-off devices, and flush out
blockages.
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Gravity circulation is causing the collec-
tor to be heated at night.
Check the gravity brake (non-return
valve) and the time set in the control-
ler.
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Solar circuit shows "suspicious" cycle
behaviour.
Check the collector array's supply and
return pipes, and mount them cor-
rectly if applicable.
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The internal settings check
has identified conflicting settings, or
double allocation of sensors.
Check the function's time settings.
Double allocation of sensors is per-
mitted, and this is only intended as
information.
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The internal plausibility check
has identified conflicting settings.
Look up the error code in the operat-
ing instructions (chapter 12) and
check/correct the entries.
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A sensor error has been detected. Locate and check the corresponding
sensor(s) in the display menu.
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Sensor cable is interrupted, incorrectly
connected, or the sensor is possibly
defective.
Check connection and/or sensor ca-
ble. Possibly check sensor and sensor
cable using an ohmmeter.