RBC-MTSC2 Mini Touch Screen Controller
Installation & Owner Manual
12
6.4.3. General R/C Setup
Enable or disable: header unit; show setpoint to 0 or 1 decimal place, frost protection.
The service information is currently only editable via the PC configuration tool.
6.4.4. Frost Protection
Note:
It is recommended that the temperature sensor in the controller is selected for the
return air reading, due to the possibility of invalid readings from the indoor unit
sensor while the fan is not running.
Once enabled, the return air temperature will be constantly monitored, and the following strategy is
executed...
Frost Protection State
Return Air Temperature
Action
Inactive
< 8.0°C
1) Save current indoor unit state
2) Set indoor unit as follows...
On, Heating, SP=21°C
3) Frost Protection State=Active
Active
>=10.0°C
1) Restore indoor unit state
2) Frost Protection State=Inactive
