PAGE 4
Pub. No. 11-AC14D1-3
INSTALLER'S GUIDE
REFRIGERANT CIRCUIT
Liquid Pressure Too High
Liquid Pressure Too Low
Suction Pressure Too High
Suction Pressure Too Low
Liquid Refrig. Floodback TXV System
I.D. Coil Frosting
Compressor Runs Inadequate or No Cooling
ELECTRICAL
Compressor & O.D. Fan Do Not Start
Compressor Will Not Start But O.D. Fan Runs
O.D. Fan Won’t Start
Compressor Hums But Won’t Start
Compressor Cycles on IOL
I.D. Blower Won’t Start
SYSTEM FAULTS
P - Primary Causes S - Secondary Causes
P
P
P
S
S
P
S
S
S
S
S
P
S
S
S
P
P
P
S
S
S
S
S
S
S
P
P
P
S
P
P
S
S
S
P
P
P
P
P
P
P
P
P
P
S
S
S
S
P
P
P
P
P
S
S
P
S
P
S
S
S
S
S
S
S
P
P
P
P
P
S
P
P
POWER SUPPLY
HIGH VOLTAGE W
IRING
COMPR. IOL
RUN CAPACITOR
START CAPACITOR
START RELAY
CONTACTOR CONTACTS
LOW VO
LTAGE WIRING
CONTROL TRANSFORMER
CONTACTOR COIL
LOW VO
LTAGE FUSE
STUCK C
OMPRESSOR
INEFFICIENT COMPRESSO
R
REFRIGERANT UNDERCHARGE
REFRIGERANT OVERCHARGE
EXCESSIVE EVAP. LOAD
NONCONDENSABLES
RESTRICTED O.D
. AIRFLOW
O.D. AIR RECIRCULATION
TXV STUCK OPEN
SUPERHEAT
RESTRICTED I.D.
AIRFLOW
REF. CIRCUIT RESTRICTIONS
O.D. FAN SPEED SWITCH
TROUBLESHOOTING CHART — WHAT TO CHECK
B
BK
Y2
Y1
O
R
D
W1
W3
G
W2
B
D
B
R
D
X2
Y2
Y1
O
CLII
COMFORT
CONTROL
24VAC HOT
24VAC
Common
DATA
CLII
INDOOR
UNIT
CLII
OUTDOOR
UNIT
FIELD WIRING DIAGRAM
COMMUNICATING INDOOR UNIT – COMMUNICATING OUTDOOR UNIT
NOTE:
For non-communicating systems, use
the 24 volt wire harness found with
Installation Guide (BAYACKT024A).
system main disconnect switch. This will activate the compres-
sor sump heat (where used). Do not change the Thermostat
System Switch until power has been applied for one (1) hour.
Following this procedure will prevent potential compressor
overload trip at the initial start-up.
G. OPERATIONAL AND CHECKOUT PROCEDURES
Final phases of this installation are the unit Operational and
Checkout Procedures which are found in this instruction on
page 8. To obtain proper performance, all units must be oper-
ated and charge adjustments made in accordance with proce-
dures found on page 6 and in the Service Facts.
NOTE: Perform a final unit inspection to be sure that factory
tubing has not shifted during shipment. Adjust tubing if neces-
sary so tubes do not rub against each other when the unit runs.
Also be sure that wiring connections are tight and wire routing
is secure.
H. SEACOAST SALT SHIELD
BAYSEAC001 (Seacoast Kit) is available for application on
units installed within one mile of salt water, including sea-
coasts and inland waterways.
I. TROUBLESHOOTING CHART
