Carrier A07051 Installation Instructions Manual page 12

To Enter the Configuration Mode:
Press and hold the FAN key for about 10 seconds until the display changes so
that only two pairs of digits are showing. The left (programmable version) or the
large upper (non- -programmable version) display shows the configuration
number and the
(non- -programmable version) shows the configuration setting. Configuration
number will be flashing which means it can be adjusted using the UP and
DOWN keys. To cause the opposite pair to flash (to be adjustable), press the
MODE key. Successive presses of the MODE key alternate between the
configuration number and the configuration setting. To exit the configuration
mode, press the FAN key. If no key is pressed for 3 minutes, the configuration
mode will automatically exit, returning the thermostat to normal operation.
Configuration Options - - Selection:
Option 01 - - Equipment type
Selections: with HP thermostat: HP, AC, H, C, PH or PC
with AC thermostat: AC, H, C or PC
PC and PH are only available on non- -programmable models.
Meanings:
PC or PH selects PTAC units (Packaged Terminal Air Conditioners) which
are used in motel rooms and other rented spaces. When this option is
selected, the display shows only the setpoint, not the room temperature.
Also the compressor timeguard is disabled, allowing the compressor to
turn on immediately when a demand is established.
HP or PH controls 1 speed heat pump with 1 stage of aux heat.
AC or PC controls 1 speed air conditioner with 1 stage of heat.
H operates a heat only system: furnace or fan coil only; no outdoor unit.
right (programmable
12
version) or small lower