SERVICING
64
CTK04 ADDENDUM
SET THERMOSTAT TO PUMP DOWN
Please follow the following sequence to enter PUMP
DOWN to accumulate the refrigerant to outdoor unit.
Do not operate Cool ON or Heat ON mode to enter PUMP
DOWN. Before starting the PUMP DOWN operation,
change indoor fan trim, delay and profile back to default
and stop electric heater and gas furnace. Remove if no trim
feature. In this operation, the gas valve and liquid service
valve should be opened.
NOTE: Manufacturer recommends to set PUMP DOWN
using 7-segment display. For more information, see section
Set 7-segment mode display to PUMP DOWN. If difficulty
is encountered using 7-segment display, use the thermostat
as an alternative method. See section SET 7-SEGMENT
MODE DISPLAY TO PUMP DOWN.
1. On the HOME screen, select MENU.
2. From the MENU screen, select COMFORTNET™ USER
MENU.
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.)