System Operation: Quick Start; System Startup Checkout And Troubleshooting - Nordyne iQ Drive Installation Instructions Manual

• Use the or key to select OPTIONS, then press the
key to enter the Options screen.
• Use the or key to select the value under SMART
RECOVERY, then press the
setting.
• Use the or key to change the value between "OFF"
(the default) and "ON", then press the
setting.
• Press the key multiple times to return to the Main
Screen.

System Operation: Quick Start

The following is a summary of the sequence for typical
operation of the system.
1. Set the date and time if not already set.
2. Check the program schedule for desired "setback", and
modify if desired.
3. From the main screen, check/set the Fan operating
mode:
• AUTO operates the fan (indoor blower) when the unit
is cooling or heating. This is the "normal" setting.
• ON operates the fan at the selected speed at all
times. The selected speed may change when the
compressor, electric heat, or furnace is operating.
• PROGRAMMED FAN operates the fan in AUTO or
ON as specifi ed in the program schedule.
4. From the main screen, check/set the Mode:
• COOL runs the air conditioner using the cooling
setpoint.
• HEAT runs the gas furnace or electric heat (whichever
is confi gured) using the heating setpoint.
• OFF terminates either of the above.
equipment may not shut off immediately after
switching to OFF due to various system limitations.
Once put into the OFF mode, wait until the furnace
or compressor has shut off before selecting another
mode.
5. Adjust the operating setpoint if desired using a temporary
hold (pressing the
displayed).

System Startup Checkout and Troubleshooting

The following is a summary of the sequence for typical fi rst
operation to check out the system. Reference is made to
INSTALLER SETTINGS and SERVICE INFORMATION
described above.
key to allow changing the
key to save the
Note that
or key when the Main Screen is
1. Install system hardware as described in the individual
component installation instructions.
2. Install power and control wiring to all system components,
including the controller, in accordance with the iQ Field
Wiring Installation Instructions.
3. Perform pre-charge
refrigerant lines as described in preceding sections.
4. Apply electrical power to the system (including the
outdoor unit). The controller screen display backlight
should come on, and the "iQ" splash screen should
appear. If it does not, trace the 24 vac control power to
the "R" terminal on the thermostat. CONFIGURATION
NEEDED should appear on the top line of the Main
Screen (unless the thermostat had been previously used
on a similar iQ system).
5. Proceed with System Confi guration from the INSTALLER
SETTINGS menu (described above). On the SYSTEM
CONFIGURATION screen verify that the using size (2
ton, 3 ton, or 4 ton) is correct as indicated. If the wrong
value is shown, the inverter may require re-initialization.
Contact the service representative of the distributor in
this case.
On the same screen, the entries under COMMUNICATION
should be followed by "OK". If "CHECK" appears for
a communication item, go to the COMMUNICATION
STATUS screen (in the SERVICE INFORMATION
menu, described above), and view which elements
are not communicating. Trace and check the three
communication wires throughout the system. If isolating
a communication problem proves to be diffi cult, it
may be useful to disconnect all communication wires
except those which link the thermostat and the non-
communicating element.
6. If COMMUNICATION STATUS was not checked during
the previous step, check it at this time. All listed items
should show a status of "OK". If any show "BAD",
determine the source of the problem as indicated in the
previous step, and resolve.
7. Set date and time as described above. This will provide a
"time stamp" for any fault which may arise during system
checkout.
8. If the installation includes a new gas furnace, check
out its operation fi rst. This may be best accomplished
from FURNACE TESTS under SERVICE TESTS from
the INSTALLER SETTINGS menu (see above). Follow
steps instructions provided in the furnace's installation
instructions. Be sure to verify blower operation during
the test.
9. If the outdoor temperature is above 60°F (14°C), test the
refrigerant system running in cooling mode. This may best
be accomplished from CHARGE MODE under SERVICE
evacuation of fi eld-installed
13