418-AC56D1-1
Installer’s Guide

E. ELECTRICAL CONNECTIONS

WARNING

!

When installing or servicing this equipment, ALWAYSexercise basic safety precautions to avoid the possibility ofelectric shock.1. Power wiring and grounding of equipment must complywith local codes.2. Power supply must agree with equipment nameplate.3. Install a separate disconnect switch at the outdoor unit.4. Ground the outdoor unit per local code requirements.5. Provide flexible electrical conduit whenever vibrationtransmission may create a noise problem within thestructure.6. The use of color coded low voltage wire is recommendedto simplify connections between the outdoor unit, thethermostat and the indoor unit.Table 1 — NEC Class II Control Wiring
24 VOLTS
WIRE SIZE MAX. WIRE LENGTH
18 AWG 150 FT
16 AWG 225 FT.
14 AWG 300 FT.
7. Table 1 defines maximum total length of low voltagewiring from outdoor unit, to indoor unit, and to thermostat.8. Mount the indoor thermostat in accordance with instruc-tion included with the thermostat. Wire per appropriatehook-up diagram (included in these instructions).

F. COMPRESSOR START-UP

After all electrical wiring is complete, SET THE THERMO-STAT SYSTEM SWITCH IN THE OFF POSITION SOCOMPRESSOR WILL NOT RUN, and apply power byclosing the system main disconnect switch. This will activatethe compressor sump heat (where used). Do not change theThermostat System Switch until power has been applied forone (1) hour. Following this procedure will prevent potentialcompressor overload trip at the initial start-up.INDOOR THERMOSTATSWITCH SETTING11Fan SwitchTO CHECK Off Cool Heat Auto OnCOMPONENT OPERATIONIndoor Outdoor Compressor3 Comp. FurnaceBlower Fan Runs Sump HeatRuns Runs Heater Comes OnStepNo.

CHECKOUT PROCEDURE WITH MAIN POWER DISCONNECTS CLOSED (ON)

1Also set thermostat dial to call for cooling or heating as necessary.2Check only necessary if heating unit is used for indoor section and wiring has been disturbed during installation of cooling equipment.3When applicable.1 Sump Heat X X X2 Indoor Fan Operation X X X X3 Cooling Operation X X X X X X4 Checking Performance X X X X X X& Charge USE CHARTS ATTACHED TO O.D. UNIT5 Heating 2XX X X X6 Inform owner on how to operate system and what to expect of it. At the same time deliver Owner’s Use and Care Booklet.
G. OPERATIONAL AND
CHECKOUT PROCEDURES
Final phases of this installation are the unit Operational andCheckout Procedures which are found in this instruction (seetable below and pages 6 and 8). To obtain proper perfor-mance, all units must be operated and charge adjustmentsmade in accordance with procedures found on page 6 and inthe Service Facts.
H. SEACOAST SHIELD
Units installed within one mile of salt water, includingseacoasts and inland waterways, require the addition ofBAYSEAC001 (Seacoast Kit) at the time of installation.IMPORTANT:See Limited Warranty information in Use and Care Manual.
I. TROUBLESHOOTING
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
PS
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
PP
P
S
S
PSPSS S S S
S
S
P
P
P
P
P
S
P
P
POWER SUPPLY
HIGH VOLTAGE WIRING
COMPR. IOL
RUN CAPACITOR
START CAPACITOR
START RELAY
CONTACTOR CONTACTS
LOW VOLTAGE WIRING
CONTROL TRANSFORMER
CONTACTOR COIL
LOW VOLTAGE FUSE
STUCK COMPRESSOR
INEFFICIENT COMPRESSOR
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