External Room Thermostat Control (Optional) - Philips WH-UD16CE5-A-1 Service Manual

13.17 External Room Thermostat Control (Optional)

Purpose:
1 Better room temperature control to fulfill different temperature request by external room thermostat.
Recommended external room thermostat:
Connection of external room thermostat:
Wire Connection and thermo characteristic of Siemen REV200:
Setting
Set Temp < Actual Temp
Set Temp > Actual Temp
Wire Connection and thermo characteristic of Siemen RAA20:
Setting
Set Temp < Actual Temp
Set Temp > Actual Temp
Control Content:

External room thermostat control activate only when remote thermostat connection select YES by Indoor control
panel.

When indoor running heat mode, refer thermo On/Off from heating line feedback. And when indoor running cool
mode, refer thermo On/Off from cooling line feedback.

Heat pump Off immediately when receive thermo off feedback.
Maker
Siemem (REV200)
Siemem (RAA20)
L/L1 (H) Heat Thermo
Open Circuit
Short Circuit
L/Y1 (H) Heat Thermo
Open Circuit
Short Circuit
91
Characteristic
Touch panel
Analog
L/L2 (C)
OFF Short Circuit
ON Open Circuit
L/Y2 (C)
OFF Short Circuit
ON Open Circuit
Cool Thermo
ON
OFF
Cool Thermo
ON
OFF