What To Do If - Stiebel Eltron SOL 27 PREMIUM S Utilisation Et Installation

6.

What to do if ... ?

The following contains descriptions of what measures to take in
order to remedy faults. If you are still unable to fix the problem
using this information, please consult your heating contractor.
Fault/error message at the controller.
Pressure fluctuations in the system.
The collectors are misted up.
The pump does not run although the collector
is warmer than the cylinder (no noise from the
motor, no noticeable vibration).
The pump is running, but no flow rate is
discernible at the flow meter with balancing
valve. The flow and return temperatures are
identical or the cylinder temperature does not
rise or rises only slowly.
The pump is running, but no flow rate
is discernible at the flow meter with
balancing valve.
The pump appears to open late and switch
itself off early.
The pump starts and switches itself off again
shortly afterwards. This repeats a few times
until the system runs correctly. The same
happens in the evening.
The pressure gauge indicates a drop
in pressure.
The pump runs noisily.
The system runs noisily. This is normal in the
first few days after filling the system. If this
occurs later:
The cylinder cools down over night. After
the pump has stopped, the flow and return
operate at different temperatures. At night the
collector temperature is higher than the out-
side temperature.
Reheating does not work. The boiler runs for
a short while, stops and starts again. This
repeats frequently, until the cylinder has
reached its set temperature.
The cylinder cools down excessively.
The pump does not switch off.
There is a fault in the system; the sensor is faulty or
incorrectly connected.
If the problem occurs immediately after commissioning,
there is air in the solar circuit.
Moisture has entered the collector during storage.
The maximum cylinder or collector temperature is
exceeded. The control indicator or display on the
controller is activated.
The power supply is interrupted.
Other cause.
The shut-off valve is closed.
Other cause.
There is still too little insolation to heat up the
entire pipework.
Other cause.
A pressure drop shortly after the system is filled is
quite normal, as air is still escaping from the system. A
pressure drop later on can be caused by an air lock that
has shifted. In addition during normal operation, the
pressure fluctuates by 0.02-0.03 bar depending on the
system temperature. If the pressure drops continuously,
the system is leaking somewhere.
The gravity brake does not close.
Other cause.
The control unit is faulty.
Other cause.
Please refer to the controller operating and
installation instructions.
Please consult a qualified contractor.
The internal mist will evaporate after a few weeks
in operation. The moisture will progressively escape
through the integral ventilation slots.
The controller has shut down correctly and restarts
again automatically when the actual temperature
drops below their selected maximum temperature.
Check fuses/MCBs.
Please consult a qualified contractor.
Please consult a qualified contractor.
Open the shut-off valve.
Please consult a qualified contractor.
Please consult a qualified contractor.
Check for faults again when there is strong insolation.
Please consult a qualified contractor.
Please consult a qualified contractor.
Please consult a qualified contractor.
Please consult a qualified contractor.
Check the position of the adjusting screw on the
gravity brake.
Please consult a qualified contractor.
Please consult a qualified contractor.
Please consult a qualified contractor.
The variable speed pump does not stop immediately
but only after it reaches its lowest speed.
Please consult a qualified contractor.