GVZC20 Service Manual

SERVICING

CTK04 ADDENDUM

3. Enter Installer password. (The password is the Date

Code located on the thermostat and is available by

entering the EQUIPMENT STATUS menu and scrolling

to the bottom).

4. Select YES to continue.

5. Select HEAT PUMP.

6. Select

Cool Setup: Cooling Mode

HEAT SETUP: Heating Mode