System start−up and checkout – Carrier PERFORMANCETSERIES EDGER THERMIDISTATT CONTROL TP-PRH-A User Manual

Page 45

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45

SYSTEM START−UP AND CHECKOUT

The Thermidistat Control is designed with a built−in installer test capability. It

allows easy operation of equipment without delays or setpoint adjustments to

force heating or cooling. To enable installer test mode, press and hold the fan

button for 15 seconds. After 10 seconds, the Thermidistat Control will enter

Configuration Mode. Continuing to hold the Fan button through 15 seconds will

cause the Thermidistat Control to enter Installer Test Mode. Pressing the Mode

button will change the system operating mode to test the heating and cooling

equipment. Auto Mode is not available during Installer Test Mode. If no buttons

are pressed for 15 minutes, the installer test mode will be terminated. Pressing

DONE at any time will exit installer test mode.
Heat − The first stage of heating will be energized for three minutes, then the first

and second stages (if a second stage exists) will turn on for an additional three

minutes. During the first stage of heating, the HEAT ON icons will be displayed.

During the second stage of heating (if one exists), the “2” next to the “On” will

be displayed if the system has a two−stage compressor (A2, h2, or H2 unit

types). The “auxiliary heat on” icon will be displayed if the second stage is

electric heat (HP unit type). While the heating test is active, the humidify output

can be toggled. On the programmable models, pressing the button below the

humidify icon shall toggle the state of the humidify output. On the

non−programmable models, pressing the features button shall toggle the state of

the humidify output.
Installer test for cooling is the same as described for heating above. COOL ON

will be displayed during cooling in Installer Test Mode. While the cooling test is

active, the dehumidify icon shall be displayed if the dry contact has been

configured as a DH output. On the programmable models, pressing the button

below the dehumidify icon shall toggle the state of the dry contact output. On the

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