Carrier A07049 Installation Instructions Manual page 19

A07218
Fig. 13 - Cover on Equipment Control Module
14. 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 -- l-stage air conditioner, AC, with furnace or fan coil
b. HP -- l-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
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