10
18-GE14D1-5
Installer’s Guide
ENTER
Push left & right to scroll
through menu options
Push up & down
to scroll through
setup menu
Push ENTER to make selection
Viewing Window
User Interface pictured above adjusts variable speed airflow options.
Figure 16. User Interface
K. UNIT TEST MODE
Unit Test Mode (Air Handler)
The system must be idle or the comfort control
switched to OFF before the Unit Test will run the air
handler. The unit will work the same way in either
Communicating or 24 VAC modes.
To access the Unit Test Mode scroll down through
the User Interface Information Menu until you see
the Unit Test option. Press ENTER. When
prompted select YES and press ENTER. When the
User Interface displays ARE YOU SURE? select YES
and press ENTER to begin the Unit Test.
NOTE: While in Test Mode all comfort control
requests will be ignored but if any button on the
User Interface is pressed, the Unit Test will exit. The
Unit Test will exit if a fault is detected during the test
sequence.
The Unit Test will perform the following steps
without delays.
1. Start blower at 50% airflow and Energize EAC
relay.
2. After 10 seconds, go to 100% airflow for 10 seconds.
(User Interface displays UNIT TEST – BLWR)
3. Energize Y1 relay for 15 seconds with 100% airflow.
(User Interface displays UNIT TEST – COOL)
4. De-energize Y1 relay and go to Electric Heat
airflow.
(User Interface displays UNIT TEST – HEAT)
5. Energize blower interlock and stage 1 heat relay.
6. Energize humidifier relay.
7. After 1 second energize stage 2 heat relay.
8. After 1 more second energize stage 3 heat relay.
9. After 5 seconds de-energize blower interlock, stage
1, 2 & 3 heat, humidifier and EAC relays.
(User Interface displays UNIT TEST – EXIT)
Displayed for three seconds
NOTE:
Airflow is default or programmed selections.
