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Rheem
Central Air Conditioner

Model # RF40B1 Official Rheem condensing unit

Here are the diagrams and repair parts for Official Rheem RF40B1 condensing unit, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 49 parts  |
Charge Valve Core RMV-206
#39

Unit parts diagram

Charge valve core

Part #RMV-206

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

Pump Drive Pulley 6" RMA-15-6
#18

Unit parts diagram

Pump drive pulley 6"

Part #RMA-15-6

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

Crankcase Heater RMM-765-5
#4A

Unit parts diagram

Crankcase heater

Part #RMM-765-5

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

Service Valve, Liquid RMV-181
#3

Unit parts diagram

Service valve, liquid

Part #RMV-181

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

Water Tree AS-217-139
#27

Unit parts diagram

Water tree

Part #AS-217-139

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

Pressure Switch RES-547
#10

Unit parts diagram

Pressure switch

Part #RES-547

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

Air Conditioner Blower Capacitor REC-147
#7

Unit parts diagram

Air conditioner blower capacitor

Part #REC-147

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

Quick Connect Suction RMM-776P
#37

Unit parts diagram

Quick connect suction

Part #RMM-776P

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

Side Panel AS-310-29
#35

Unit parts diagram

Side panel

Part #AS-310-29

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

Run Capacitor REC-144
#6

Unit parts diagram

Run capacitor

Part #REC-144

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

Symptoms for water softeners

Choose a symptom to see related water softener repairs.

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Why does my water softener overflow?

Main causes: faulty brine valve assembly, bad rotor valve…

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Why is my softened water salty?

Main causes: clogged drain hose, faulty rotor valve, leaky rotor valve seals…

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Why isn't my water softener using salt?

Main causes: salt bridge inside the salt tank, bad timer, valve motor failure, faulty rotor valve, clogged venturi…

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Why does my water softener leak water?

Main causes: loose water line connections, cracked water-carrying components, bad rotor valve seals…

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Why is there no display on my water softener?

Main causes: lack of electrical power, bad power transformer, faulty timer…

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Why isn't my water softener softening my water?

Main causes: empty salt tank, salt bridge, depleted resin, clogged or damaged venturi, broken rotor position switch, fai…

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Why are water softener resin beads in my water?

Main causes: broken resin tank screen, bad resin tank seals, cracked upper distributor in resin tank…

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Why isn't my water softener meter working?

Main causes: broken water flow meter, faulty timer, water flow to softener is bypassed…

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Repair guides for water softeners

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

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How to replace a water softener venturi

How to replace a water softener venturi

The venturi valve in your water softener draws brine water from the salt tank to the resin tank for regeneration. Follow…

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Repair difficulty
Time required
 15 minutes or less
How to replace a water softener rotor position switch

How to replace a water softener rotor position switch

The rotor position switch detects the position of the valve rotor. If the rotor position switch fails, follow these step…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a water softener timer

How to replace a water softener timer

The timer is the control board you use to program the water softener. If the timer isn’t accepting commands when you pus…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your central air conditioners

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

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Maintaining your air conditioner

Maintaining your air conditioner

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

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How to prevent the 2 most common AC failures from ruining your summer

How to prevent the 2 most common AC failures from ruining your summer

Get tips to help keep your central AC running all summer long…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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