21 33-00131ES—01
System test
1 Press SYSTEM. You’ll see several blank buttons
on the bottom of the display.
2 Press and hold the buttons on either side of
the center button until the screen changes
(approximately 5 seconds).
3 Repeatedly press t next to the four digit
function number until “Test” appears.
4 Press t next to “Test” to select test type.
5 Press t next to the 0 to change system status.
6 Press DONE to terminate testing.
See next page for system test types and status
options.
DONE CANCEL
AM
Inside
Set To
70
6:01
70
FAN
AUTO
SYSTEM
HEAT
SUN
SUN
SYSTEM
HEAT
DONE
0
TEST
Test number
System status
1 Cooling system
0 Compressor and fan turn off
1 Compressor and fan turn on
2 Second stage compressor turns on
2 Fan system
0 Fan turns off
1 Fan turns on
3 Heating system
0 Heat and fan turn off
1 Heat turns on (fan on if Function 0170 is set for heat pump,
or if Function 0180 is set to “1”)
2 Second stage heat turns on
4 Emergency
heating system
0 Em Heat and fan turn off
1 Em Heat and fan turn on
2 Second stage heat turns on (Auxiliary heat)
System test System status
Important!
EQUIPMENT DAMAGE HAZARD. Compressor protection is bypassed during testing.
To prevent equipment damage, avoid cycling the compressor quickly.