Operating instructions

Logamatic EMS RC35 programming unit - Subject to technical modifications
49
Troubleshooting
7
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: Even when the home is only being heated a little, the pump runs to achieve
the set room temperature, even if low.
• shut-down 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.
• Outdoor setback mode and Room setback mode: the heating system starts automatically
when the actual 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 can heat to increase the temperature of DHW. Your heating system can be set to three
possible control modes (Æ page 46):
• Room temperature control: the boiler shuts down automatically once the set room temperature
has been reached.
• Weather-compensated control: the heating system operates based on the outside temperature.
• Weather-compensated control with room temperature hook-up: the heating system utilises both
the control types referred to above.
The boiler may still operate in the latter two cases, even if the captured room temperature is higher
than the displayed room temperature.