Independent Outputs; Fan Test; Cooling Test; Heating Test - Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting

Table 4 — Test Mode Unit Test Directory
DISPLAY MENU /
SUBMENU / NAME
SERVICE
UNIT TESTS
TEST MODE
SERVICE TEST
INDEPENDENTS
ECON POS TEST
BUMP COMP A1 TEST
BUMP COMP A2 TEST Compressor Bump A2
LIQ DV VALVE TEST
RH DIS VALVE TEST
RH LIQ VALVE TEST
CL LIQ VALVE TEST
CCH RELAY 1 TEST
ALARM RELAY TEST
PE1 RELAY TEST
PE2 RELAY TEST
FAN TESTS
IDF SPEED TEST
ALL ODF SPD TEST
ODF 1 SPEED TEST
ODF 2 SPEED TEST
ODF 3 SPEED TEST
IDF MANUAL TRANS
ODF MANUAL TRANS
COOL TESTS
COOL A1 TEST
COOL A2 TEST
COOL ALD TEST
IDF SPEED TEST
ALL ODF SPD TEST
HUMIDIMIZER TEST
HEAT TESTS
HEAT 1 TEST
HEAT 2 TEST
IDF SPEED TEST

AUTOMATIC TEST

AUTO INDP TEST
AUTO COOL TEST
AUTO HEAT TEST
AUTO SYSTEM TEST
EXPANDED NAME VALUES
Service Menu
Unit Tests Menu
Service Test Mode
On/Off
Enable
Service Test Menu
INDEPENDENT TEST MENU
Economizer Position
0 to 100
Test
Compressor Bump A1
On/Off
Test
On/Off
Test
Liq Diverter Val Rly
On/Off
Tst
Rht Dischg Valve Rly
On/Off
Tst
Reheat Liq Valv Rly
On/Off
Test
Cooling Liq Valv Test On/Off
Crankcase Heater 1
On/Off
test
Alarm Output Relay
On/Off
Test
Power Exhaust 1 Test On/Off
Power Exhaust 2 Test On/Off
Indoor and Outdoor Fan tests Menu
Indoor Fan Speed
0 to 100
Test
System ODF Speed
0 to 1200
Test
Outdoor Fan 1 speed
0 to 1200
test
Outdoor Fan 2 speed
0 to 1200
test
Outdoor Fan 3 speed
0 to 1200
test
IDF Manual Transition Yes/No
ODF Manual
Yes/No
Transition
Cooling Test Menu
Cooling W/Comp.A1
On/Off
Test
Cooling W/Comp.A2
On/Off
Test
Cooling W/Comp.ALD
On/Off
Test
Indoor Fan Speed
0 to 100
Test
System ODF Speed
0 to 2000
Test
0 = Off
Humidi-MiZer Level
1 = Subcool
Test
2 = Reheat
Heating Test Menu
Heating Stage 1 Test On/Off
Heating Stage 2 Test On/Off
Indoor Fan Speed
0 to 100
Test
Automatic Test Menu
Auto Independent
Yes/No
Test
Run Auto Cooling
Yes/No
Test
Run Auto Heating
Yes/No
Test
Run Auto System
Yes/No
Test
Press the TEST button on the SystemVu™ interface anytime to
access the Test menu. Service Test mode can only be turned ON/
OFF at the unit display. Once turned ON, other entries may be
made with the display or through CCN. To turn Service Test mode
on, change the value of TEST MODE to ON. To turn service test
mode off, change the value of TEST MODE to OFF. Service Test
mode will be automatically turned off based on keypad inactivity
and the Service Mode Test Time out (TEST MODE TIMEOUT).
NOTE: Service Test mode may be password protected. Refer to
Basic Control Usage section for more information. Depending on
the unit model, factory-installed options, and field-installed acces-
sories, some of the Service Test functions may not apply.

Independent Outputs

The INDEPENDENTS submenu is used to change output sta-
tus for the economizer, Humidi-MiZer
exhaust stages, crankcase heaters, the alarm relay, as well as
perform a compressor bump test. These independent outputs
can operate simultaneously with other Service Test modes. All
outputs return to normal operation when Service Test is turned
off. The compressor bump tests cannot be run while running
cooling tests and will automatically turn off after one minute.

Fan Test

The FAN TESTS submenu is used to change speed for the in-
door fan and outdoor fans. The outdoor fan speeds can be con-
trolled individually or all together with the ALL ODF SPD
TEST. The outdoor fan and indoor fan transition type points in-
form the test routine how to handle the fans while running the
cooling or heating tests. Automatic will automatically transi-
tion the fans as the cooling or heating tests change, while the
Manual transition will only run the fans as set by the test
points.

Cooling Test

The COOL submenu is used to change output status for the in-
dividual compressors and Humidi-MiZer system operation.
The HEAT submenu service test outputs are reset to OFF for
the cooling service test. Indoor fans and outdoor fans are con-
trolled normally to maintain proper unit operation when set for
automatic transition. The IDF SPEED TEST and ALL ODF-
SPD TEST can be changed as needed for testing. These fan
points show the requested speed, not actual speed. All normal
cooling faults and alerts are functional.

Heating Test

The HEAT submenu is used to change output status for the indi-
vidual heat stages, gas or electric. The COOL service test out-
puts are reset to OFF for the heating service test. Indoor fan is
controlled normally to maintain proper unit operation when set
for automatic transition. The IDF SPEED TEST can be
changed as needed for testing and shows the requested speed not
actual speed. All normal heating faults and alerts are functional.
NOTE: When the IGC fan on command (IGC FAN REQUEST)
is active, the fan may run when not expected.
Automatic Test
The AUTOMATIC TEST submenu is used to execute all the
applicable tests to the system automatically. These include in-
dependent component, cooling, heating, and a system one.
Table 5 shows the steps taken during the independent, cooling,
and heating automatic tests. The Hold time represents the time
at which that control waits before moving on to the next step.
The AUTO SYSTEM TEST will execute the independent auto
test, then the cooling auto test, then the heating auto test. At the
end of the system auto test a prompt will ask if you want to en-
ter measured data and complete a service report.
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® system valves, power