Functional concept ESIE05-04
2–16 Part 2 – Functional Description
1.12 Thermostat Control
Purpose Based on the information received from the air return sensor, the thermostat control will decide the
required operation status of the system.
Thermostat control Cooling mode:
Heating mode:
Cool / heat changeover in automatic mode:
Preventing
thermostat OFF
conditions
The thermostat control prevents the thermostat from turning OFF in the following conditions:
Q For the 2.5 minutes after operations starts, or
Q Defrosting, or
Q Forced operating mode, or
Q Within the first 6 hours after power ON, initial operation for the first 10 minutes (See note)
Note: To protect the compressor, make sure to turn on the power supply 6 hours before starting
operation.
Thermostat OFF
–0.5 K
Set point
+1 K
Thermostat ON
Thermostat ON
–1 K
Set point
+0.5 K
Thermostat OFF
Automatic heating
–2 K
Set point
+2 K
Automatic cooling
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