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SPLIT SYSTEMS

AIR CONDITIONING AND HEAT PUMP homeowner’s Routine Maintenance Recommendations

We strongly recommend a bi-annual maintenance checkup be performed

before the heating and cooling seasons begin by a 

qualified servicer

.

Replace or Clean Filter

IMPORTANT NOTE: Never operate unit without a 

filter installed as dust and lint will build up on 

internal parts resulting in loss of efficiency, 

equipment damage and possible fire. 

An indoor air filter must be used with your comfort system. 

A properly maintained filter will keep the indoor coil of 

your comfort system clean. A dirty coil could cause poor 

operation and/or severe equipment damage.

Your air filter or filters could be located in your furnace, in a 

blower unit, or in “filter grilles” in your ceiling or walls. The 

installer of your air conditioner or heat pump can tell you 

where your filter(s) are, and how to clean or replace them.

Check your filter(s) at least once a month. When they are 

dirty, replace or clean as required. Disposable type filters 

should be replaced. Reusable type filters may be cleaned.

You may want to ask your dealer about high efficiency 

filters. High efficiency filters are available in both electronic 

and non-electronic types. These filters can do a better job 

of catching small airborne particles.

Compressor

The compressor motor is hermetically sealed and does not 

require additional oiling.

Motors

Indoor and outdoor fan motors are permanently lubricated 

and do not require additional oiling.  

Clean Outside Coil (Qualified Servicer Only)

WARNING

HIGH VOLTAGE!

Disconnect ALL power before servicing or 

installing this unit.  Multiple power sources may 

be present.  Failure to do so may cause property 

damage, personal injury or death.

Air must be able to flow through the outdoor unit of your 

comfort system. Do not construct a fence near the unit or 

build a deck or patio over the unit without first discussing 

your plans with your  dealer or other qualified servicer. 

Restricted airflow could lead to poor operation and/or 

severe equipment damage.

Likewise, it is important to keep the outdoor coil clean. 

Dirt, leaves, or debris could also restrict the airflow. If 

cleaning of the outdoor coil becomes necessary, hire 

a qualified servicer. Inexperienced people could easily 

puncture the tubing in the coil. Even a small hole in the 

tubing could eventually cause a large loss of refrigerant. 

Loss of refrigerant can cause poor operation and/or severe 

equipment damage.

Do not use a condensing unit cover to “protect” the outdoor 

unit during the winter, unless you first discuss it with your  

dealer. Any cover used must include “breathable” fabric to 

avoid moisture buildup.

BEFORE CALLING YOUR SERVICER

•   Check the thermostat 

to confirm that it is properly set.

•   Wait 15 minutes. Some devices in the outdoor unit or 

in programmable thermostats will prevent compressor 

operation for awhile, and then reset automatically. 

Also, some power companies will install devices 

which shut off air conditioners for several minutes on 

hot days. If you wait several minutes, the unit may 

begin operation on its own.

CAUTION

To avoid the risk of equipment damage or fire, install the 

same amperage breaker or fuse as you are replacing.  If the 

circuit breaker or fuse should open again within thirty days, 

contact a qualified servicer to correct the problem.

 

If you repeatedly reset the breaker or replace

 

the fuse without having the problem corrected, you run the 

risk of severe equipment damage.

•   Check the electrical panel for tripped circuit breakers  

or failed fuses. Reset the circuit breakers or replace 

fuses as necessary. 

•   Check the disconnect switch near the indoor furnace 

or blower to confirm that it is closed.

•   Check for obstructions on the outdoor unit

. Confirm 

that it has not been covered on the sides or the top. 

Remove any obstruction that can be safely  removed. 

If  the unit is covered with dirt or debris, call a qualified 

servicer to clean it.

•   Check for blockage of the indoor air inlets and outlets. 

Confirm that they are open and have not been 

blocked by objects (rugs, curtains or furniture). 

•  

Check the filter

. If it is dirty, clean or replace it.

•   Listen for any unusual noise(s), other than normal 

operating noise, that might be coming from the 

outdoor unit. If you hear unusual noise(s) coming from 

the unit, call a qualified servicer.

Summary of Contents for ASXH3 Series

Page 1: ...DO NOT BYPASS SAFETY DEVICES SHIPPING INSPECTION Always keep the unit upright laying the unit on its side or top may cause equipment damage Shipping damage and subsequent investigation is the respons...

Page 2: ...on Ensure the foundation is sufficient to support the unit A concrete slab raised above ground level provides a suitable base ROOFTOP INSTALLATIONS If it is necessary to install this unit on a roof st...

Page 3: ...igid wire or straps that would come in contact with the tubing Use an insulated or suspension type hanger Keep both lines separate and always insulate the suction line These sizes are recommended for...

Page 4: ...rmation of copper oxide inside the refrigerant lines The POE oils used in R 410A applications will clean any copper oxide present from the inside of the refrigerant lines and spread it throughout the...

Page 5: ...e system mechanical seals 2 Evacuate the system to less than 500 microns 3 Isolate the pump from the system and hold vacuum for 10 minutes minimum Typically pressure will rise slowly during this perio...

Page 6: ...l panel cover THERMOSTAT SINGLE STAGE HEATING WITH SINGLE STAGE COOLING Single Stage Thermostat with Two Low Voltage Wires to Remote SYSTEM START UP CAUTION POSSIBLE REFRIGERANT LEAK To avoid a possib...

Page 7: ...Superheat adjustments should not be made until indoor ambient conditions have stabilized This could take up to 24 hours depending on indoor temperature and humidity Before checking superheat run the...

Page 8: ...0 13 15 19 23 24 25 6 9 11 15 20 21 23 7 12 17 18 20 8 13 15 16 7 10 11 13 7 8 10 7 8 7 105 110 115 75 80 85 90 95 100 System Superheat Targets for Piston Match ups 1 0 F Indoor Wet Bulb Temperature F...

Page 9: ...D SUCTION PRESSURE TEMPERATURE CHART LIQUID PRESSURE SATURATED LIQUID TEMPERATURE F PSIG R 410A 200 70 210 73 220 76 225 78 235 80 245 83 255 85 265 88 275 90 285 92 295 95 305 97 325 101 355 108 375...

Page 10: ...y ADVANCED ADJUSTMENT RECOMMENDATIONS NOTE Units matched with indoor coils equipped with a TXV should be charged by Subcooling only SUPERHEAT FORMULA SUCTION LINE TEMPERATURE SATURATED SUCTION TEMPERA...

Page 11: ...n Motor Repair or Replace Shorted or Grounded Fan Motor Test Motor Windings Improper Cooling Anticipator Check Resistance of Anticipator Shortage or Refrigerant Test For Leaks Add Refrigerant Restrict...

Page 12: ...is important to keep the outdoor coil clean Dirt leaves or debris could also restrict the airflow If cleaning of the outdoor coil becomes necessary hire a qualified servicer Inexperienced people coul...

Page 13: ...tdoor Unit Suction Circuit Pressure Suction Line Temperature PSIG TEMP F Liquid Circuit Pressure Liquid Temperature PSIG TEMP F Outdoor Air Temperature Dry bulb Wet bulb DB F WB F SUPERHEAT SUBCOOLING...

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Page 16: ...ration Amana Brand products http www amana hac com product registration You can also scan the QR code on the right for the product brand you purchased to be directed to the Product Registration page N...

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