ION SYST0101CW Installation Instructions Manual page 29

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• System in Control: The system will decide which stage should be running to satisfy the
heating demand.
• High Heat: Temperature below which only the high stage of heating will be energized.
• Only Low Heat: The system will only run in low stage heating.
6.3.4.2. Cooling Lockout
Outside temperature below which cooling will not be provided. After the selection is made,
touch SAVE.
• Cooling Lockout Temp: None, 45, 50 or 55 (°F). Default = None
NOTE: When simultaneous heating and cooling demand feature is on, the cooling lockout shall
be ignored.
6.3.4.3. Defrost Interval
Time interval at which defrost cycles can occur on a heat pump. AUTO means the defrost
interval is optimized by the outdoor control. After the selection is made, touch SAVE.
• Set Defrost Interval: 30, 60, 90, 120 minutes or AUTO. Default = AUTO
NOTE: See Heat Pump Installation Instructions for Defrost Timing Interval when using AUTO
Defrost.
6.3.4.4. Low Ambient Cooling
See Ion System Control Product Data for compatible units and more information.
Selecting YES will enable the low ambient cooling operation in the outdoor unit. This setting is
only available with compatible communicating outdoor units and with Cooling Lockout set to
NONE. Low ambient kits are not needed with many communicating outdoor units. Refer to the
outdoor unit Product Data or Installation Instructions for more information. After the selection
is made, touch SAVE.
• Low Ambient Cooling: Yes or No. Default = No
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