The Service Information Screens - Nordyne iQ Drive Installation Instructions Manual

S E R V I C E T E S T S
C H A R G E M O D E
F U R N A C E T E S T S
A I R C O N D R U N T E S T S
H E AT P U M P R U N T E S T S
D I S C R E T E O U T P U T S
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NOTE: While running the system from Service Tests is
convenient for some startup operations, much of the normal
fault handling and diagnostic message functionality is
disabled.
Within each test screen there may be more than one entry
which can be changed. Select the desired entry to be
modifi ed using the and
a dark background behind the characters is considered
"selected". Press the
item (its dark background will then blink). Set the desired
value for the item using the
key to save it.
The following is a brief description of the SERVICE TEST
categories:
• CHARGE MODE – Runs the system at the proper
speed for checking and adjusting refrigerant charge.
Select the mode as COOLING, then change RUN from
OFF to ON. The screen backlight will blink red. The
user may navigate to other screens (e.g., SERVICE
INFORMATION) during the process until ON in the
CHARGE MODE screen is changed back to OFF and
saved. The red blinking backlight serves as a reminder
that the unit is operating in an abnormal (service) mode.
Select OFF (from the list that includes ON and OFF) and
SAVE ( ) when fi nished.
• FURNACE TESTS – Runs the system at the selected
fi re level to allow confi rmation of proper operation. The
screen backlight will blink red. A short list of instructions
(reminders) is provided. Select START to run a single
stage furnace. Select LO FIRE or HI FIRE to run a two
stage furnace. The user may navigate to other screens
(e.g., SERVICE INFORMATION) during the process.
The red blinking backlight serves as a reminder that the
unit is operating in an abnormal (service) mode. Select
DONE (from the list that includes LO FIRE, HI FIRE,
START, STOP) and SAVE ( ) when the test is complete,
before leaving the screen for the last time.
• AIR COND RUN TESTS – In this screen the unit can
be made to run at a fi xed speed regardless of room
temperature. RUN can be changed between OFF, MAX
keys. The line or value with
key to allow changing the selected
and keys, then press the
(speed), INTERMED(iate speed), and MIN (speed).
MAX speed is the same as that used in charge mode.
The screen backlight will blink red when anything but
OFF is selected and saved. The user may navigate to
other screens (e.g., SERVICE INFORMATION) during
the process until RUN in this screen is changed back
to OFF and saved. The red blinking backlight serves
as a reminder that the unit is operating in an abnormal
(service) mode. This screen is primarily intended for test
agency usage. Heat pump run tests apply only to heat
pump units. Select OFF and SAVE ( ) when fi nished.
• DISCRETE OUTPUTS – When the unit is off, this
screen allows the user to operate certain relay-driven
outputs in the system for diagnostic purposes: humidifi er
(on the indoor interface board or blower control board),
and indoor coil EXV (on the indoor interface board or
blower control board). (The others do not apply to this air
conditioning unit.) One or both of these can be set to ON
at the same time. Leaving the DISCRETE OUTPUTS
screen will shut all of the listed outputs off.

The SERVICE INFORMATION Screens

Typically, when any of these service tests is being performed,
the serviceperson should check operation visually, with
special instrumentation (if available), and view operational
data on the SERVICE INFORMATION screens. Refer to iQ
®
Drive training information for how to view these screens.
S E R V I C E I N F O R M AT I O N
F A U LT S TAT U S
C O M P R E S S O R S TAT U S
O U T D O O R F A N S TAT U S
I N D O O R F A N S TAT U S
F U R N A C E S TAT U S
T E M P E R AT U R E S TAT U S
C L E A R F A U LT H I S T O R Y
C A L I B R AT I O N D ATA
C O M M U N I C AT I O N D ATA
C C F M D ATA
D E F R O S T S TAT U S
C A PA C I T Y C O N T R O L
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Most of the items on the SERVICE INFORMATION menu are
self-explanatory by title. Some key features are the following
(by item name):
• FAULT STATUS. The top entry is ACTIVE FAULT. This
should show NO FAULT unless the last fault detected
has not cleared after its 5 minute lockout period, or the
fault condition still exists. The remainder of the screen
shows a history of previous faults or conditions detected,
with military time and date stamps for each. (Having the
correct time and date confi gured is important in making
this list useful.) Use the
the last (most recent) 10 faults logged. Generally, fault
logging is not functional during Service Tests.
key to view the remainder of
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