Installation guide

ManualsBrandsCarrier ManualsCentral air conditionerOfficial Carrier heat pump

NOTE:Iflinelengthisbeyond80fl (24.4m)orgreaterthan20fl

(6m)verticalseparation,SeeLongLineGuidelineforspecial

chargingrequirements,

MAINTENANCE

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal iniury

or death.

Before installing, modifying, or servicing system, main

electrical disconnect switch nmst be in the OFF position.

There may be more than 1 disconnect switch. Lock out and

tag switch with a suitable warning label.

LUBRICATION

Compressor

Compressor contains factory oil charge; replace oil when lost. Use

Mobile 3MA-POE oil.

CLEANING COILS

Coil should be washed out with water or blown out with

compressor air. Note that the blow-thru design causes dirt and

debris to build up on the inside of the coils. Clean coil annually or

as required by location and outdoor air conditions. Inspect coil

monthly and clean as required. Fins are not continuous through

coil sections. Dirt and debris may pass through first section,

become trapped between the row of fins and restrict condenser

airflow. Use a flashlight to deternfine if dirt or debris has collected

between coil sections. Clean coil as follows:

1. Turn off unit power.

2. Using a garden hose or other suitable equipment, flush coil

from the outside to remove dirt. Be sure to flush all dirt and

debris from drain holes in base of unit. Fan motors are wa-

terproof.

TROUBLESHOOTING

[

CON [ACTOR OPEN

FAULTY POWER ]

SUPPLY

DEFECT VE LOW- I

VOLTAGE

TRANGFORMER

OPEN CONTROL I

CIRCUIT

DEFECT VE ]TIME RELAY

CON_ACIOR OR

COIL DEFEC I IVE

LOOSE ELECTRCALCONNECTION

LINE PRESSURE

SWITCli

COMPRESSOR

WILL NOT RUN

CONTACTQR GtOSED J

COMPRESSOR POWER ]

SUPPLY OPEN

AT COMPRESSOR

FAULTY START GEAR(SINGLE PHASE}

OPEN, SHORTED OR

MOYOR WINDINGS

GROUNDED COMPRESSOR

CAPACITOR

NO COODNG OR

INSUFF CIENT DOOLING

ouTooo......... OO ELEADA,1

OR OYCUNG ON ]

OVERLOAD FAN MOTOR

OUTDOOR AIR

RESTRICTED OR MOTOR DEFECTIVE

RECIRCU_T NG ,,

RESTRICTED DISCHARGE NCORRECT OUTDOOR

I _%%,%o#O%N_&OT

PRESSURE LOW HEAD PRESSURE LOW SUPERHEAI

__1 __i __1

DIRTY AIR ] I ..... TIVE] I

FILTERS COMPRESSOR VALVES UNiT OVERCHARGED i

NDOOR COIL INTERNAL PRESSURE BVRASSd YPE

FROSTED REUEF OPEN METERING DEVICE

OVERCHARGE OR I

NONCONDENSABLES

N SYS[EM

LOW REFRIGERANT ]

CHARGE

TOO HIGH OR LOW

CAPACITOR

{ COM ....... ]

BEARINGS

FAULTY

SLIGHTLY LOW ]ON REFRIGERANT

LIQU_D LINE ]SLIGHTLY RESTRICTED

BYPASS-TYPE

METERING DEVCE

RESTRFCTED

NCORRECT ]

BYPASS-TYPE

ME [ERING DEVICE

INDOOR BLOWER MOFOR

ON OVERLOAD

DEFECTIVE OR CYCUNG

HIGH SUPERHEAT 1

Fig. 6 - Troubleshooting the Cooling Cycle

A07402

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalo_l No: 38HDR-6Sl

Replaces: 38HD-5SI