Carrier PERFORMANCETSERIES EDGER THERMIDISTATT CONTROL TP-PRH-A - Manual (Page 23)

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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 Thermidistat Control configuration. Refer to Option 33.
a. AC — 1−stage air conditioner with furnace or fan coil
b. HP — 1−stage heat pump with fan coil
c. A2 — 2−stage air conditioner with furnace or fan coil
d. H2 — 2−stage heat pump with fan coil
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