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Amana
Heating & Cooling Combined Unit

Model # RHA36A3B/P1180221C Official Amana air conditioner & heater

Here are the diagrams and repair parts for Official Amana RHA36A3B-P1180221C air conditioner & heater, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 167 parts  |
Comp-cp Cr35k6-tfd 10481812
#32

Outer cabinet/compressor/tubing diagram

Comp-cp cr35k6-tfd

Part #10481812

The manufacturer no longer makes this part, and there's no substitute part

Gasket 10777501
#111

Outer cabinet/compressor/tubing diagram

Gasket

Part #10777501

The manufacturer no longer makes this part, and there's no substitute part

Valve-sweat 20023002
#23

Tubing diagram

Valve-sweat

Part #20023002

The manufacturer no longer makes this part, and there's no substitute part

Tube-liq/dist 11170402
#78

Tubing diagram

Tube-liq/dist

Part #11170402

The manufacturer no longer makes this part, and there's no substitute part

Lug, Ground A9015203
#41

Control box diagram

Lug, ground

Part #A9015203

The manufacturer no longer makes this part, and there's no substitute part

Restrictor ("f" [orifice] Models Only) B1443809

#241

All parts diagram

Restrictor ("f" [orifice] models only)

Part #B1443809

The manufacturer no longer makes this part, and there's no substitute part

Rha18a2b-spec Sht 11187306

#NI

All parts diagram

Rha18a2b-spec sht

Part #11187306

The manufacturer no longer makes this part, and there's no substitute part

Relay-start 10142307
#251

Control box diagram

Relay-start

Part #10142307

The manufacturer no longer makes this part, and there's no substitute part

Basepan 10229602
#12

Outer cabinet/compressor/tubing diagram

Basepan

Part #10229602

The manufacturer no longer makes this part, and there's no substitute part

Piston-orif 0710 11076318

#221

All parts diagram

Piston-orif 0710

Part #11076318

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your heating & cooling combined units

Choose a symptom to see related heating and air conditioning system repairs.

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Why is my furnace not blowing hot enough?

Thermostat problem, clogged air filter, burner failure…

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Why isn’t my air conditioner cooling well?

Dirty air filter, clogged condenser coils, low refrigerant charge, faulty compressor…

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Why isn’t my air conditioner cooling?

Thermostat problems, bad compressor/condenser fan capacitor, lack of refrigerant, failed compressor…

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Why won’t my furnace burners won’t stay lit?

Dirty flame sensor, failed flame sensor, damaged burner, bad high limit switch…

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Why won't my air conditioner turn on?

Main causes: errant thermostat settings, lack of electrical power, clogged drain line, wiring failure, control failure.…

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Why won't my furnace turn on?

Main causes: Errant thermostat settings, lack of power, bad interlock switches, lack of exhaust ventilation, wiring fail…

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Most common repair guides to help fix your heating & cooling combined units

These step-by-step repair guides will help you safely fix what’s broken on your HVAC system.

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How to unclog the air conditioner drain line

How to unclog the air conditioner drain line

The condensate drain line for your central air conditioner can clog with mold and mildew. Water will back up and start d…

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Repair difficulty
Time required
 15 minutes or less
How to replace the furnace flame sensor

How to replace the furnace flame sensor

The flame sensor detects when furnace burner flames are lit. You may need to replace the flame sensor if flames only sta…

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Time required
 15 minutes or less
How to replace a heating and air conditioning system thermostat

How to replace a heating and air conditioning system thermostat

The control thermostat for your HVAC system can stop working. This repair guide shows how to replace it.…

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Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your heating & cooling combined units

Use the advice and tips in these articles and videos to get the most out of your HVAC system.

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Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long.…

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