Carrier Performance A07048 Installation Instructions Manual page 20

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 Thermidistat Control configuration. Refer to Option 33.
a. AC — 1- -stage air conditioner
b. HP — 1- -stage heat pump
c. A2 — 2- -stage air conditioner
d. H2 — 2- -stage heat pump
e. hh — Hybrid Heat system with 1- -stage heat pump
f. h2 — Hybrid Heat system with 2- -stage heat pump
g. H — heating only system
h. C — cooling only system
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