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A/C Switch:
The unit’s A/C ON/OFF cannot be operated by any button on the controller.
When the A/C switch B1-B2 is bridged, the unit’s heating /cooling function
is activated. An external signal like a timer or thermostat, etc could be
connected to B1-B2 to activate or deactivate the unit’s heating /cooling
function. This external signal must be voltage free.
Case 1 : Install a manual switch inside the house to switch on/off heating/cooling.
Case 2: Install a timer switch inside the house to switch on/off heating/cooling
automatically in due time.
Electrical Connection
Note
This is a potential free input contact only. DO NOT PUT 230VAC INTO THIS
CONTACT
B1 B2
B1 B2
