Installation Manual

11
Fig. 6 -- Attach Display to Backplate
9. Turn on power to equipment. On power up, all display segments will light for 5 sec. and a two
digit code appears on the center of the display which identifies the thermostat equipment type
configuration.
a. A1 — 1--stage air conditioner with furnace or fan coil
b. H1 — 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. h1 — Hybrid Heat system with 1--stage heat pump
f. h2 — Hybrid Heat system with 2--stage heat pump
g. HT — heating only system
h. CL — cooling only system
Set Thermostat Configuration
Configuration options enable the installer to configure the Thermostat for a particular
installation. Most are not presented to the homeowner and therefore must be properly set by the
installer. (Only those marked with an asterisk * below are available to the homeowner.) The
homeowner configurations are described in the owner’s manual. A special procedure allows
entry into the configuration mode. Selections can be made while in configuration mode.
Description of each selection and how to use the configuration mode follows (See page xx).