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Installation Guide
69-2019EFS—02 4
Installer system test
Setup function Settings & options (factory default in bold)
M23675
Press s / t to turn system on/off.
Press NEXT to advance to next test.
Press DONE to terminate system test.
Test number
10
System status
0
To begin, press and hold the s and t
buttons until the display changes
10 Heating system 0 Heat and fan turn off.
1 Stage 1 heat turns on. Fan turns on if Setup Function 1 is set to 1,
5, 9 or 10 OR Setup Function 3 is set to 1.
2 Stage 2 heat turns on.
3 Stage 3 heat turns on.
20 Emergency heating
system
0 Heat and fan turn off
1 Heat and fan turn on
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
[Other cycle rate options: 1, 2, 4, 5 or 6 CPH]
10 Second Stage
Compressor
Cycle Rate
3 Compressor Cycle Rate
[Other options: 1, 2, 4, 5, 6 for Special Applications]
A Auto Discover
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
[Other options: 0, 1, 2, 3 or 4-minute off time]
19 Service Indicator 00–199 Diagnostic Codes
See Special function section on page 5.
23 Backlight Mode 0 Disabled
1 Enabled
26 Aux Control 0 Comfort
1 Economy
See Special function section on page 5.
27 Heat temperature
range stops
90 Max. heat temperature setting is 90 °F (32 °C)
[Other options: 40 °F to 89 °F (4.5 °C to 31.5 °C)]
28 Cool temperature
range stops
50 Min. cool temperature setting is 50 °F (10 °C)
[Other options: 51 °F to 99 °F (10.5 °C to 37 °C)]
System test System status