Installation Guide
10
DONE
TUE
Inside
70
20
0120
DONE
1
0
TEST
During installer setup, press t
repeatedly until “Test” appears.
Test
number
System
status
Press st to
select test
Press st to
change status
Press DONE to terminate testing.
Shaded areas below apply only to TH8320/TH8321.
1Cooling system 0 Compressor and fan turn off
1 Compressor and fan turn on
2 Second stage compressor turns on
2Fan system 0 Fan turns off
1 Fan turns on
3Heating 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”) ** See page 6
2 Second stage heat turns on
3 Third stage heat turns on
4Emergency
heating system
0 Heat and fan turn off
1 Heat and fan turn on
2 Second stage heat turns on (Auxiliary heat)]
System test System status
CAUTION: EQUIPMENT DAMAGE HAZA RD. Compressor protection is bypassed
during testing. To prevent equipment damage, avoid cycling the compressor quickly.

Installer system test