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3 --HEAT
PUMP/AIR
CONDITIONER
BOARD
STATUS
CODES
AMBER
LED
OPERATION
FAULT
POSSIBLE CAUSE AND ACTION
FLASH
CODE
Standby
no call for unit opera-
On solid,
tion
None
no flash
Normal operation
Standard Ther-
Rapid, con-
Unit being controlled by standard thermostat inputs instead of Infin-
Emergency Mode
mostat Control
tinuous
ity Control.
Only high stage operation is available.
This operating
flashing
mode should be used in emergency situations only.
Low Stage Cool/Heat Operation
None
1, pause
Normal operation
High Stage Coot/Heat Opera-
tion
None
2, pause
Normal operation
System Commu-
16
Communication
with UI lost. Check wiring to UI, indoor and outdoor
nications Failure
units.
Invalid Model
25
Control does not detect a model plug or detects an invalid model
Plug
plug.
Unit will not operate without correct modet plug.
High-Pressure
31
High-pressure
switch trip. Check refrigerant charge, outdoor fan
Switch Open
operation and coils for airflow restrictions.
Low-Pressure
32
Low-pressure
switch trip. Check refrigerant charge and indoor air
Switch Open
flow.
Outdoor unit control board has failed. Control board needs to be
Control Fault
45
replaced.
Brown Out
46
Line voltage < 187v for at least 4 seconds. Compressor
and fan
(230 v)
operation not allowed until vottage>190v.
Verify line voltage.
There is no 230v at the contactor when indoor unit is powered and
No 230v at Unit
47
cooling/heating
demand exists. Verify the disconnect
is closed and
230v wiring is connected
to the unit.
Outdoor Air
Outdoor air sensor not reading or out of range. Ohm out sensor
Temp Sensor
53
and check wiring.
Fault
Outdoor Coil
55
Coii sensor not reading or out of range. Ohm out sensor and check
Sensor Fault
wiring.
Thermistors Out
56
Improper relationship between coil sensor and outdoor air sensor.
of Range
Ohm out sensors and check wiring.
Compressor
voltage sensed, then disappears while cooling or heat-
Low Stage Ther-
ma! Cutout
71
ing demand exists. Possible causes are internal compressor
over-
Ioad trip or start relay not releasing (if installed).
Compressor
voltage sensed, then disappears while cooling or heat-
High Stage Ther-
mal Cutout
72
ing demand exists. Possible causes are internal compressor
over-
Ioad trip or start relay not releasing (if instailed).
Contactor
Compressor
voltage sensed when no demand for compressor
op-
73
eration exists. Contactor may be stuck closed or there is a wiring
Shorted
error.
No 230V at
74
Compressor
voltage not sensed when compressor
should be start-
Compressor
ing. Contactor may be stuck open or there is a wiring error.
Low Stage Ther-
81
Thermal cutout occurs in three consecutive tow/high
stage cycles.
mal Lockout
Low stage locked out for 4 hours or untii 24v power recycled.
High Stage Ther-
82
Thermal cutout occurs in three consecutive high/low stage cycles.
mal Lockout
High stage locked out for 4 hours or until 24v power recycled.
Low-Pressure
Low-pressure
switch trip has occurred during 3 consecutive
83
cycles.
Unit operation locked out for 4 hours or unti124v power
Lockout
recycled.
High-pressure
switch trip has occurred during 3 consecutive
High- Pressure
Lockout
84
cycles.
Unit operation locked out for 4 hours or unti124v power
recycled.
COOLING
OPERATION
With a call for first stage cooling,
the outdoor
fan and low-stage
compressor
are energized.
If low-stage
cannot
satisfy
cooling
demand,
high-stage
is energized
by the User
Interface.
After
second
stage is satisfied,
the unit returns
to low-stage
operation
until first stage is satisfied
or until second
stage is required
again.
When both first stage and second
stage cooling
are satisfied,
the
compressor
will shut off.
NOTE:When
two-stage
unit is operating
at low stage,
system
vapor
(suction)
pressure
will
be
higher
than
a
standard
single-stage
system
or high-stage
operation.
NOTE:Outdoor
fan motor
will
continue
to
operate
for
one
minute
after compressor
shuts
off, when
outdoor
ambient
is
greater than or equal to 100°F.
UTILITY
INTERFACE
WITH
INFINITY
CONTROL
The
utility
curtailment
relay
should
be
connected
to factory
supplied
pigtails
(PINK.
connected
to R, VIOLET
connected
to
Y2 on the control
board)
located
in the low voltage
splice
box
(See Fig. 13, 15 and 16). This input allows a power
utility device
to interrupt
compressor
operation
during
peak
load
periods.
When the utility
sends a signal to shut the system
down,
the UI
will display,
"Curtailment Active".
17
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