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Logamatic EMS RC25 programming unit - Subject to technical modifications
29
Troubleshooting
8
Why does the pump run at night, even though the home is not being heated at all or only
very little?
This depends on the setting chosen by your heating contractor for night setback.
Reduced operation: The pump still runs even if the home is only being heated a little to achieve
a low room temperature.
Shutdown mode: The heating system (and therefore also the pump) is automatically shut down
in night mode. If the outside temperature falls below the frost protection temperature, the pump
is automatically switched on by the “Frost protection” function.
Shutdown mode and Room setback mode: The heating system is switched on automatically
when the captured temperature falls below the set value. The pump will then also start.
The actual room temperature is higher than the set room temperature. Why is the boiler
still running?
The boiler may be running to heat up DHW. Your heating system can be set to three possible control
modes (Æ page 25):
Room temperature control: The boiler shuts down when the set room temperature has been
reached.
Weather-compensated control: The heating system runs on the basis of the outside temperature.
Weather-compensated control with room temperature hook-up: The heating system takes
advantage of both the above control modes.
The boiler can still operate in the latter two cases, even if the captured room temperature is higher
than the set room temperature.
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