11.Close thermostat assembly making sure pins on back of circuit board align with sockets in connector.
12.Turn ON power to unit.
When power is applied, all display icons are lit for 2 seconds to test the display. Following this, the equipment type for which the thermostat is configured is displayed for an additional 2 seconds. It will be one of PH or PC (if HP, AC, H or C is displayed, the thermostat is configured incorrectly to operate a PTAC). See explanation under Step 3, Option 01 below. A heat pump thermostat, configured to operate a HeatCool unit (see Option 1 below), will display PC. A HeatCool thermostat cannot be configured to operate a HeatPump unit.
NOTE: If a common wire has not been connected, two AA batteries must be used to power the thermostat.
Step 3 — Set Thermostat Configuration
Configuration options enable the installer to configure the thermostat for a particular installation. These must be set correctly to insure proper PTAC operation. Following is a list of the options available, an explanation of their function, and their factory default settings.
Configuration Options - Summary:
Option 01 | - | Equipment type |
Option 03 | - | Fahrenheit/Centigrade |
Option 04 | - | Unused for PTAC |
Option 07 | - | Unused for PTAC |
Option 10 | - | Reversing valve (HP only) |
Option 11 | - Minimum deadband between heating and cooling setpoints | |
Option 13 | - Room air temperature offset adjustment | |
Option 16 | - Maximum cycles per hour | |
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