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System test System status
Shaded areas below apply only to TH5320U/TH5220D or as otherwise noted.
Press / to turn system on/off.
Press NEXT to advance to next test.
Press DONE to terminate system test.
Test number
System status
press and hold the and
buttons until the display changes
Installer setup
Setup function Settings & options (factory default in bold)
Shaded areas below apply only to TH5320U/TH5220D or as otherwise noted.
CAUTION: Compressor protection is bypassed during testing. To prevent equipment
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10 Heating system 0 Heat and fan turn off.
2 Stage 2 heat turns on
TH5320U only
20 Emergency heating
system
0 Heat and fan turn off
1 Heat and fan turn on
2 Stage 2 heat turns on (auxiliary heat) - TH5220D only
30 Cooling system 0 Compressor and fan turn off
1 Compressor and fan turn on
2 Stage 2 compressor turns on
40 Fan system 0 Fan turns off
1 Fan turns on
9 Stage 1 compressor
cycle rate (CPH)
3 Recommended for most compressors
10 Stage 2 compressor
cycle rate (CPH)
3 Recommended for most compressors
12 Manual/Auto
changeover
0 Manual changeover (Heat/Cool/Off)
1 Auto changeover (Heat/Cool/Auto/Off)
2 Auto changeover only (Auto)
14 Temperature
display
0 Fahrenheit
1 Celsius
15 Compressor
protection
5 Five-minute compressor off time
26 Auxiliary heat control 0 Comfort **See page 8
1 Economy
27 Heat temperature
range stops
90 Max. heat temperature setting is 90 °F (32 °C)
28 Cool temperature
range stops
50 Min. cool temperature setting is 50 °F (10 °C)
Installer system test
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