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A07221
Fig. 15 − Reattach Display Module
9. Turn on power to equipment. On power up, all display segments will
light for 5 sec. For the next 5 sec a 2−digit code appears on large display
which identifies AC/HP Control configuration. Refer to Option 33.
a. AC — 1−stage air conditioner, AC, with furnace or fan coil
b. HP — 1−stage heat pump, HP only with fan coil
c. H — heating only system, furnace only or fan coil with electric
heat only
d. C — cooling only system, AC with fan coil
e. H2 — 2−stage heat pump with fan coil
f. A2 — 2−stage air conditioner with fan coil or furnace
Set AC/HP Control Configuration
Configuration options enable the installer to configure the thermostat for a
particular installation. Most are not presented to the homeowner and therefore