Goodman Heat Pump Breaker Keeps Tripping: Causes & Costs

Last updated Oct 12, 2026 · By fixme.vip Editorial

Goodman heat pump breaker keeps tripping: what it means

“Breaker keeps tripping” is not a Goodman diagnostic code. It is a symptom. The circuit breaker feeding your heat pump or its air handler is sensing more current than it is rated for, or a short to ground, and cutting power to protect the wiring.

Goodman split systems normally have two power supplies:

• The outdoor unit runs on a dedicated 240V breaker, usually 15–60A depending on tonnage. It powers the compressor and condenser fan.
• The indoor air handler has its own breaker or breakers. These power the blower and, on most heat pump installs, the electric auxiliary heat strips (5–20 kW).

The breaker stays off until someone resets it by hand. The fix depends on which breaker trips and when it trips:

• Instantly on reset: usually a hard short.
• When the compressor tries to start: often a start or capacitor problem.
• After running a while: often an overload, a failing motor, or a weak breaker.

Which units this page covers. The causes and diagnosis below are for single-stage and two-stage Goodman heat pumps with a capacitor-run compressor and a contactor. Inverter-driven variable-speed models are different. They drive the compressor through an inverter board and typically use an ECM fan, so they have no compressor run capacitor or conventional contactor. On those units, breaker trips point to the inverter drive, its components, or the ECM motor. The safe checks below still apply to them, but the cause ranking and technician steps do not.

Severity: pro. Everything beyond one breaker reset and basic airflow checks involves live 240V components and belongs to a licensed technician.

Goodman heat pump breaker keeps tripping: common causes, ranked by probability

These apply to capacitor-run single-stage and two-stage units. See the note above for inverter models.

1. Failed or weak run capacitor (outdoor unit). Without proper capacitor assist, the compressor or fan motor draws high current trying to start. The single- and two-stage units covered here typically use a dual run capacitor for both the compressor and fan. This is the most common cause on units more than a few years old, especially after hot summers.
2. Compressor hard-starting or locked rotor. A compressor that struggles to start pulls locked-rotor amps, often 5–7 times running current. On a locked rotor, the compressor’s internal overload often trips before the breaker does. When the breaker itself trips repeatedly on start, it usually means high locked-rotor draw combined with a weak capacitor, low supply voltage, or a marginal breaker. Causes of hard starting include worn compressor mechanics, low voltage, or pressures that haven’t equalized after a short-cycle.
3. Loose, burnt, or corroded wiring or terminals. Heat and corrosion at the contactor, capacitor, disconnect or breaker lugs create resistance and arcing. Rodent damage to wiring is also common on outdoor units.
4. Failing contactor. On units with a conventional contactor, pitted or welded contacts can chatter or cause arcing and uneven power delivery to the compressor.
5. Shorted or seized condenser fan motor. A fan motor with a winding shorted to ground, or bearings that are seizing, overloads the circuit. The fan problem itself is covered separately (see Related codes).
6. Grounded or shorted compressor winding. When compressor insulation breaks down, current flows to the casing. Breakers often trip instantly on reset. This is the most expensive cause.
7. Electric heat strip or air-handler fault (indoor breaker). Possible faults include a shorted heater element, a failed sequencer or relay that energizes all strips at once, or a heat kit too large for its breaker or wire size. This often shows up only in cold weather when aux heat engages.
8. Undersized or worn-out breaker. A breaker that has tripped many times, or one that is smaller than the unit’s rating plate calls for, can trip under normal load. An installer may have mismatched the breaker to the unit, which happens more often after equipment replacement.
9. High head pressure from a dirty outdoor coil or restricted airflow. This raises compressor amp draw in cooling mode. It is usually a contributing factor rather than the sole cause.

How to fix Goodman heat pump breaker keeps tripping: safe checks first

• Identify which breaker is tripping. Check the panel labels for the outdoor unit/condenser and for the air handler/furnace/heat strips. Note it for the technician.
• Note when it trips. Does it trip instantly on reset, when the outdoor unit starts, after minutes of running, or only in heat mode on cold days? This saves diagnostic time.
• Check for smoke, sparking, burning smell, buzzing or scorch marks at the outdoor unit, air handler or panel, from a distance, before you reset anything. If you see smoke or sparking, or notice a persistent burning odor, keep power off at the panel, get away from the equipment, and call 911 if there is any sign of fire. If you find buzzing or scorch marks without those signs, leave power off and say so when you call a technician.
• Reset the breaker ONE time. Only do this if the check above found nothing. First set the thermostat to OFF and wait 5 minutes so compressor pressures can equalize. Then reset the breaker fully: push it to OFF, then back to ON. After that, set the thermostat back to heat or cool. If it trips again, leave it off and call a pro. Do not reset it repeatedly.
• Replace a dirty air filter. Severe airflow restriction raises system load and can make strip heat overheat.
• Clear the outdoor unit. Remove leaves, debris, snow or ice buildup from around the cabinet, keeping about 2 feet of clearance. Do not open the cabinet. Also make sure supply and return vents indoors are open and unblocked.
• Check thermostat settings. Confirm the thermostat isn’t set to Emergency Heat by mistake. In Emergency Heat, the heat strips become the primary heat source whenever there is a call for heat, instead of backing up the heat pump. That puts more load on the indoor circuit and can stress one that is already marginal.

Do not open the outdoor disconnect box, the unit’s service panel, or the air handler’s electrical compartment. These contain 240V and capacitors that hold a charge even with power off.

How a technician will diagnose it

On a capacitor-run single- or two-stage unit, a good tech will typically:

1. Ask which breaker trips and when. Instant, on start, after a run, and heat-only trips point to different components.
2. Inspect the panel, breaker and disconnect for heat damage, loose lugs and correct breaker size. The tech compares breaker size against the MOCP (maximum overcurrent protection) and MCA on the Goodman rating plate.
3. Test the dual run capacitor with a capacitance meter against its µF rating. Tolerance is typically ±6%.
4. Megohm or ohm test the compressor windings. The tech tests common, start and run terminals to each other and to ground to rule out a grounded or open compressor.
5. Test the condenser fan motor for winding shorts to ground and check whether it spins freely.
6. Inspect the contactor for pitting, welding or a burnt coil, and check all wiring and terminals.
7. Measure voltage and amperage during startup and running. The tech compares readings to the nameplate RLA and LRA. Low supply voltage or locked-rotor draw on a hard start is a key finding.
8. On the indoor side, check heat strip element resistance, sequencers or relays, and the blower motor. The tech also confirms the heat kit matches the air handler and breaker.
9. On communicating models, read stored fault codes on the control board or thermostat.

On inverter-driven variable-speed models, steps 3 and 6 do not apply because there is no compressor run capacitor or conventional contactor. The tech will instead focus on the inverter drive and its components and the ECM fan motor, along with the panel, wiring, indoor-side and fault-code checks above.

A quote should name the specific failed component and the measurement that proved it. Be wary of “you need a new compressor” or “a new system” without winding test results. A hard-starting compressor may also warrant a hard-start kit, but that should be a deliberate recommendation, not a guess.

Symptom, cause and what to do

Goodman heat pump breaker keeps tripping repair cost

Typical US ranges, including parts and labor:

Goodman’s parts warranty is 10 years on registered units, and some models carry a lifetime compressor warranty. Coverage depends on your specific model and whether it was registered, so don’t assume a lifetime compressor warranty applies to your unit. Before approving compressor work, verify your model’s registered warranty terms with Goodman or your installer. Warranty often covers the part but not the labor. If the compressor is grounded on an older unit, ask for a repair-versus-replace comparison.

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• Goodman Heat Pump Not Heating: Causes, Fixes & Costs
• Goodman Heat Pump Aux Heat On Constantly: Causes & Fixes
• Goodman AC Running But Not Cooling: Causes & Costs