Rheem Heat Pump Reset Button Location and How to Reset Safely

Rheem heat pump owners often search for the reset button location after a unit trips or fails to start. This article explains where reset buttons are commonly found, step-by-step safe reset procedures, diagnostic checks, and when to call a licensed HVAC technician. The guidance covers indoor air handlers, outdoor units, thermostats, electrical panels, and safety switches to provide a practical approach to restoring operation.

Component	Common Reset Location	Typical Notes
Indoor Air Handler	Control Panel Access Panel / Control Board	Reset or push-button on board; may be recessed
Outdoor Unit	Control Box / Contactor Area	Some models have a reset for overloads; many rely on breakers
Thermostat	Thermostat Menu / Power Cycle	Soft reset via settings or removing batteries
Electrical Panel	Circuit Breaker	Trip/reset by switching breaker off then on
Drain Pan	Float Switch	Clear water and debris to reset

Why Finding The Rheem Heat Pump Reset Button Matters

Heat pumps include safety devices and overload protection that can interrupt operation to prevent damage. Locating a reset button or knowing reset procedures helps diagnose whether a simple restart will restore the unit or if a deeper fault exists. Misplaced assumptions about a reset button can lead to repeated resets that mask electrical or refrigerant issues.

Overview Of Where Rheem Places Reset Controls

Rheem manufactures residential and light-commercial heat pumps with different control arrangements. Common reset touchpoints include the indoor air handler control board, the outdoor unit control box, circuit breakers, thermostats, and condensate safety switches. Not all Rheem models have a dedicated user-accessible reset push-button; some require power cycling or service tools to access the circuit board.

Reset Button On The Indoor Air Handler

The indoor air handler often houses the most accessible control board and diagnostic indicators. Homeowners should first remove the access panel and visually inspect the control board for a labeled reset button or recessed push-button. If present, it is usually near the board edge and may be labeled “Reset,” “Push To Reset,” or “Control Reset.”

Before pressing any reset button, turn off power at the service switch or breaker to reduce shock risk and to allow capacitors to discharge. Wait 30 seconds after power-off, restore power, then press the reset if the manufacturer instructs.

Reset Location On The Outdoor Unit

Some Rheem outdoor units include an internal overload device or manual reset switch inside the unit control box. Access requires removing the unit’s service panel and identifying the contactor and any manual reset device. Outdoor reset buttons may be recessed to prevent accidental resets and may be intended for technicians.

Because the outdoor unit contains high-voltage components and refrigerant lines, turn the disconnect switch off and lock it out before opening the panel. If a reset is found and pressed, monitor the unit for repeated trips, which suggest compressor or control faults.

Thermostat As A Reset Point

A thermostat reset is a non-invasive first step. Resetting the thermostat can clear control or communication errors that prevent the heat pump from running. Typical steps include switching the system to “Off,” removing thermostat batteries (if present) for one minute, then turning the thermostat back on.

For smart thermostats, a factory reset in settings or removing power from the thermostat circuit can resolve software glitches. Check the thermostat wiring (R, C, Y, G, O/B) if the thermostat is not commanding the outdoor unit after reset.

Electrical Panel And Disconnects

Many issues resolved by “resetting” are actually circuit breaker trips. Inspect the main electrical panel for a tripped breaker labeled for the heat pump or air handler. Reset by switching the breaker fully off and then on. If the breaker trips again immediately, do not repeatedly reset; this indicates a short circuit or severe overload requiring professional service.

Also check the outdoor unit disconnect near the condenser. This pull-out or fused switch may contain fuses that must be replaced if blown. Replacing fuses requires matching the exact fuse type and rating specified by Rheem.

Condensate Drain Pan And Float Switches

Many Rheem air handlers include a condensate safety switch that cuts power when the drain pan is full. The float switch is often inside the secondary drain pan or on the condensate trap. Clearing the clog and draining the pan typically resets the float switch automatically.

If a float switch has a manual reset, it will be located near the pan. Turn off power before servicing and clear algae, debris, or a blocked condensate line. Consider installing antimicrobial treatments or a float switch with an alarm to reduce future shutdowns.

How To Safely Reset A Rheem Heat Pump: Step-By-Step

1. Turn The Thermostat To Off: Stop commands to the outdoor unit and air handler. 2. Power Off At Service Switch: Locate the air handler service switch (usually on the wall nearby) and turn it off. 3. Switch Off The Outdoor Disconnect/breaker: Open the outdoor disconnect and switch off the breaker to the condenser. 4. Wait 30–60 Seconds: Allow controls and capacitors to discharge. 5. Restore Power And Monitor: Turn on disconnect and service switch, then set thermostat to heat or cool as needed and watch for normal startup. 6. Press Reset Button Only If Present: If a labeled reset exists, press it after restoring power per manual instructions.

Diagnostic Checks After Reset

If the unit returns to operation, observe it for several minutes to ensure stable cycling and proper airflow. Check for abnormal noises, short cycles, or error codes on the thermostat or control board. If the unit trips again, note the timing and any patterns.

Check common failure causes: dirty air filters restricting airflow, low refrigerant causing long cycles or freeze-ups, failed contactors, compressor overloads, clogged drains, or faulty thermostats. Document error codes or LED blink patterns for the technician.

Interpreting Control Board LEDs And Error Codes

Rheem control boards often include diagnostic LEDs or a small display. These indicators flash specific patterns for issues like high-pressure cutout, low-pressure, sensor failure, or communication faults. Consult the unit’s service manual or the label inside the access panel for a blink-code chart to interpret the lights.

Record LED behavior and thermostat messages before contacting support. Providing these details speeds up diagnosis and often reduces service time.

When There Is No Reset Button

Many Rheem units lack a user-accessible reset button. In those cases, power cycling via the breaker and outdoor disconnect and addressing upstream issues is the correct method. Persistent failures without a reset button typically need professional electrical, refrigerant, or control board intervention.

When To Call A Licensed HVAC Technician

Call a technician if the unit repeatedly trips or shows sustained error codes, if the breaker trips immediately after reset, if there is burning smell or visible damage, if the compressor fails to start but the fan runs, or if refrigerant-related symptoms appear such as ice on the coil. Experienced techs can test line voltages, inspect capacitors, measure refrigerant pressures, and replace failed safety devices safely.

Safety Tips And Best Practices

Always turn off power before opening panels or working near electrical components. Use insulated tools and verify absence of voltage with a meter when qualified. Do not bypass safety switches or fuses. Replace fuses with the exact type recommended by Rheem. Keep manuals and wiring diagrams handy and write down model and serial numbers before calling for service.

Common Mistakes To Avoid

Avoid repeatedly resetting a tripped breaker without diagnosing the cause. Never press unidentified buttons on a control board without referring to the service manual. Avoid using makeshift wiring to bypass safety features as this risks equipment damage and personal injury. Do not assume all Rheem units share the same reset procedures—always consult the unit-specific manual.

Model-Specific Notes And Where To Find Manuals

Rheem model lines include Classic, Prestige, ProSeries, and commercial units, each with different control layouts. The best source for exact reset locations and instructions is the model-specific service manual available at Rheem’s official support site or included with the unit.

Locate the model and serial number on the unit data plate, usually on the outdoor cabinet or inside the air handler, and search Rheem’s website for documentation. Manuals show component placement, wiring diagrams, LED code charts, and recommended fuses.

FAQ

Does Every Rheem Heat Pump Have A Reset Button?

No. Many Rheem heat pumps do not have a user-accessible reset button and rely on circuit breakers, recessed technician resets, or automatic electronic controls. Power cycling is often the recommended user action.

Is It Safe For Homeowners To Press A Reset Button?

Pressing a clearly labeled reset button is generally safe if the manufacturer documentation allows it, but homeowners must first cut power to reduce risk and follow manual instructions. If uncertain, contact a professional.

How Long Should A Reset Take To Restore Operation?

After a proper reset or power cycle, the unit should start within a minute or two. If the compressor does not start or the unit trips again quickly, this indicates a deeper fault requiring service.

What If The Breaker Trips Immediately After Reset?

Immediate breaker trips often indicate a short circuit, locked compressor, or severe electrical fault. Do not continue resetting the breaker; call a licensed technician to diagnose and repair the cause.

Practical Maintenance To Reduce Resets

Regular maintenance reduces trips and resets. Replace filters every 1–3 months, keep outdoor coils clean, clear debris from condensate drains, schedule annual professional tune-ups, and check for proper refrigerant charge. Consider installing a condensate overflow alarm to catch clogs early.

Key Takeaways

Rheem heat pump reset locations vary—they may be on an indoor control board, inside the outdoor unit, at the breaker, or implemented as automatic electronic resets. Power cycling is often the first safe step. Persistent trips, immediate breaker trips, or unclear reset procedures indicate the need for a licensed HVAC technician. Always prioritize safety by disconnecting power and consulting the model-specific manual.

For model-specific instructions and parts, reference the Rheem manual for the exact unit model number or contact an authorized Rheem service provider for safe diagnosis and repair.