LG Therma V AHBW A0 Series Service Manual page 24

Features
Temperature control parameter setting and etc
• Function Code 21 : Setting electric heater on / off temperature
Using Half capacity of electric heater : when DIP switch No. 6 and 7 is set as ʻOFF-ONʼ :
- Value #1 : outdoor air temperature where half capacity of electric heater starts operation.
- Value #2 : not used.
- Example : If Value #1 is set as ʻ-1ʼ and DIP switch No 6. and 7 is set as ʻOFF-ONʼ, then half capacity of electric
heater will start operation when outdoor air temperature is below -1 °C ... and current leaving water temperature
or room air temperature is much belower than target leaving water temperature or target room air temperature.
Using Full capacity of electric heater : when DIP switch No. 6 and 7 is set as ʻOFF-OFFʼ :
- Value #1 : base outdoor air temperature.
- Value #2 : not used.
- Example : If Value #1 is set as '-1' and DIP switch No 6. and 7 is set as 'OFF-OFF', then full capacity of electric
heater will start operation when outdoor air temperature is below -1 °C and current leaving water temperature or
room air temperature is much belower than target leaving water temperature or target room air temperature.
FCU Installation
• If FCU is used, related 2way valve should be installed and connected to the unit PCB.
• If Value #2 is set as ʼ00ʼ but FCU or 2way valve is NOT installed, the product can be operated abnormally.
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