Nordyne 14 SEER User's Information And Installation Instructions Manual page 10

Green LED is not on,
module does not power up
Green LED intermittent,
module powers up only
when compressor runs
TRIP LED is on but system
and compressor check OK
Determine if both R and C module terminals are
connected. Verify voltage is present at module's R and
C terminals. Review 24VAC Power W iring (page 4) for
R and C wiring.
Determine if R and Y terminals are wired in reverse.
Verify module's R and C terminals have a constant
source. Review 24VAC Power W iring (page 4) for R
and C wiring.
Verify Y terminal is connected to 24VAC at contactor
coil. Verify voltage at contactor coil falls below 0.5VAC
when off.
TRIP LED and ALERT LED
flashing together
ALERT Flash Code 3
(Compressor Short Cycling)
displayed incorrectly
ALERT Flash Code 5, 6 or 7
(Open Circuit, Open Start Circuit
or Open Run Circuit) displayed
incorrectly
ALERT Flash Code 6 (Open
Start Circuit) displayed for Code 7
(Open Run Circuit) or vice versa
ALERT Flash Code 8
(Welded Contactor)
displayed incorrectly
Verify R and C terminals are supplied with 19-28VAC.
Verify Y terminal is connected to 24VAC at contactor coil.
Verify voltage at contactor coil falls below 0.5VAC when
off.
Check that compressor run and start wires are through
module's current sensing holes. Verify Y terminal is
connected to 24VAC at contactor coil. Verify voltage at
contactor coil falls below 0.5VAC when off.
Check that compressor run and start wires are routed
through the correct module sensing holes.
Determine if module's Y terminal is connected. Verify Y
terminal is connected to 24VAC at contactor coil. Verify
24VAC is present across Y and C when thermostat demand
signal is present. If not, R and C are reverse wired. V erify
voltage at contactor coil falls below 0.5VAC when off.
Table 2. Module Wiring Troubleshooting
Adjustment of Refrigerant Charge:
CAUTION'.
Split system air conditioner equipment
contains liquid and gaseous refrigerant
under pressure. Adjustment of
refrigerant charge should only be
attempted by qualified, trained
personnel thoroughly familiar with the
equipment. Under no circumstances
should the homeowner attempt to
install and/or service this equipment.
Failure to comply with this warning
could result in equipment damage,
personal injury, or death.
NOTE: The following Refrigerant Charging
Charts are applicable to matched assemblies
of our equipment and at listed airflows for the
indoor coil. These units are matched with TXV
equipped indoor coils. Assemblies of indoor coils
and outdoor units not listed are not recommended
and deviations from rated airflows or non-listed
equipment combinations may require modifica-
tions to the expansion device(s) and refrigerant
charging procedures for proper and efficient
system operation.
Refrigerant Charging Chart -- Refer to
Refrigerant Charging Charts for correct system
charging.
Optional Equipment -- A functional checkout
should be performed in accordance with the
checkout procedures supplied with the
equipment.
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