Thermostat Control - Daikin FCQ35B7V1 Service Manual

Functional concept
1.12

Thermostat Control

1
Purpose
Thermostat control
2
3
4
5
Preventing
thermostat OFF
conditions
2–16
Based on the information received from the air return sensor, the thermostat control will decide the
required operation status of the system.
Cooling mode:
Thermostat OFF
Heating mode:
Thermostat ON
Cool / heat changeover in automatic mode:
Automatic heating
The thermostat control prevents the thermostat from turning OFF in the following conditions:
For the 2.5 minutes after operations starts, or
Defrosting, or
Forced operating mode, or
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.
Set point
Thermostat ON
–0.5 K
+1 K
Set point
+0.5 K
Thermostat OFF
–1 K
Set point
–2 K
Automatic cooling
+2 K
ESIE05-04
Part 2 – Functional Description