R e s i d e n t i a l S p l i t
R e v. : 1 3 M a r c h , 2 0 1 5
38
ICC Controls
Flashing
c – Anti-short cycle timer
(5 minutes) or Minimum
run timer (30 seconds)
active
• The unit has received a
command for fi rst stage
cooling during an active
anti-short cycle timer or
minimum run timer
• Wait until unit timer
has expired or press the
TEST button to defeat
short cycle delay
Dual 7 -
Segment
LEDs Display
Code
Diagnostic
Description
Status/Possible
Cause –
Troubleshooting
Information
C – Second Stage
Cooling
Unit has received a com-
mand for second stage
cooling
Normal Operation
Flashing
C – Anti-short cycle timer
(5 minutes) or Minimum
run timer (30 seconds)
active
• The unit has received
a command for second
stage cooling during an
active anti-short cycle
timer or minimum run
timer
• Wait until unit timer
has expired or press the
TEST button to defeat
short cycle delay
h – First Stage Heating
Unit has received a
command for fi rst stage
heating
Normal Operation
Flashing
h – Anti-short cycle timer
(5 minutes) or Minimum
run timer (30 seconds)
active
• The unit has received a
command for fi rst stage
heating during an active
anti-short cycle timer or
minimum run timer
• Wait until unit timer
has expired or press the
TEST button to defeat
short cycle delay
H – Second Stage
Heating
Unit has received a com-
mand for second stage
heating
Normal Operation
Flashing
H – Anti-short cycle timer
(5 minutes) or Minimum
run timer (30 seconds)
active
• The unit has received
a command for second
stage heating during an
active anti-short cycle
timer or minimum run
timer
• Wait until unit timer
has expired or press the
TEST button to defeat
short cycle delay
t – Test Mode
The ICC is in the TEST
mode
P – Protector Trip
A command for compres-
sor operation is present
but no current is mea-
sured to the compressor
• Motor protector open
01 – Long Run Time
(Compressor)
The compressor has
continuously run for
more than 18 hours
• Low refrigerant charge
• Air ducts have substan-
tial leakage
• Dirty air fi lter or air coil
02 – High Side Fault
Compressor limit has
opened four (4) times
within a call for operation
• Dirty air fi lter or air coil
• Blower is not running
• Liquid line restriction
• Excessive refrigerant
charge
Dual 7 -
Segment
LEDs Display
Code
Diagnostic
Description
Status/Possible
Cause –
Troubleshooting
Information
03 – Short Cycling
the ICC detects the run
time for the past four
(4) compressor cycles
is less than three (3)
minutes each
• Check thermostat wire
connections
• Check thermostat loca-
tion in zone (too close to
discharge grill)
L4 – Locked Rotor
The ICC detects four (4)
consecutive protector
trips have occurred and
the average run time for
each trip is less than 15
seconds
• Bad run capacitor
• Low line voltage
• Excessive refrigerant in
compressor
• Seized bearings in com-
pressor
05 – Open Run Circuit
(Compressor will not run)
The ICC has had a pro-
tector trip for more than
4 hours
• Check for damaged,
miswired, or wrong run
capacitor
• Check for broken wires,
loose connectors, or
miswired compressor
• Check compressor
windings for continuity
• Check for open com-
pressor internal protector
06 – Compressor Open
Start Circuit
The ICC detects current
in the Run circuit but not
in the Start circuit of the
compressor
• Check for damaged,
miswired, or wrong run
capacitor
• Check for broken wires,
loose connectors, or
miswired compressor
• Check compressor
windings for continuity
L6 – Compressor Open
Start Circuit
The ICC detects current
in the Run circuit but
not in the Start circuit of
the compressor four (4)
times in one compres-
sor call
• Check for damaged,
miswired, or wrong run
capacitor
• Check for broken wires,
loose connectors, or
miswired compressor
• Check compressor
windings for continuity
07 – Compressor Open
Run Circuit
The ICC detects current
in the Start circuit but
not the Run circuit of the
compressor
• Check for damaged,
miswired, or wrong run
capacitor
• Check for broken wires,
loose connectors, or
miswired compressor
• Check compressor
windings for continuity
Содержание RPVE Series
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