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Error code reference

Goodman Hvac Error Code 6

Compressor output delay or anti-cycle timer active (3-minute compressor delay).

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Compressor output delay or anti-cycle timer active (3-minute compressor delay).

First step from the service manual

Wait for timer to expire; normal operational delay.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What 6 means on a Goodman hvac

Error code 6 on a Goodman HVAC system indicates that the compressor output delay or anti-cycle timer is currently active. This is a built-in protective function that imposes a 3-minute delay before the compressor is allowed to start or restart. The control board triggers this timer automatically under specific conditions, such as immediately after a power cycle, after a thermostat demand change, or following a recent compressor shutdown. During this period, the system will not energize the compressor, even if the thermostat is calling for cooling or heating.

The anti-cycle timer exists to protect the compressor from damaging short-cycling. If a compressor restarts too quickly after shutting off, refrigerant pressure in the system has not had time to equalize. Starting under unequalized pressure forces the compressor motor to work against excessive head pressure, which can cause overheating, mechanical stress, and premature failure of the compressor. The 3-minute delay allows system pressures to stabilize before the next start attempt.

Code 6 is not an error in the traditional sense and does not indicate a fault or component failure. It is a normal, expected operational status that resolves on its own once the timer expires. No technician intervention or reset is required. If the code reappears repeatedly in short succession, it may be worth investigating whether the system is experiencing nuisance cycling caused by an oversized unit, a faulty thermostat, or control board issues that are causing repeated demand signals.

Source: manufacturer service documentation.

Common causes of 6

  1. 01

    Recent power interruption or power cycle

    Wiring / connection

    When power to the unit is restored after an outage or manual shutoff, the control board automatically starts the 3-minute anti-cycle timer. This is the most frequent trigger and requires no action.

  2. 02

    Thermostat demand change or cycling

    Wiring / connection

    If the thermostat turns off and then quickly calls for cooling or heating again, the control board activates the delay to prevent an immediate compressor restart. Checking the thermostat setpoint and cycle rate settings can help identify if this is the trigger.

  3. 03

    Recent compressor shutdown after a run cycle

    Wiring / connection

    After the compressor completes a normal run cycle and shuts off, the timer activates automatically. This is standard behavior and will clear within 3 minutes.

  4. 04

    Nuisance cycling from an oversized unit

    Wiring / connection

    A unit that is too large for the space it conditions may short-cycle frequently, triggering the anti-cycle timer repeatedly. If code 6 appears very often, a system sizing evaluation may be needed.

  5. 05

    Control board fault causing repeated demand signals

    Part replacement

    In rare cases, a malfunctioning control board may send repeated start and stop signals, causing the anti-cycle timer to activate in an ongoing loop. If the delay does not clear normally or reappears immediately after expiring, the control board should be inspected.

See the test procedure for each cause

Frequently asked questions about 6

What does 6 mean on a Goodman hvac?
Code 6 on a Goodman HVAC system means the compressor output delay or anti-cycle timer is active. This is a built-in 3-minute protective delay that prevents the compressor from restarting too quickly after a shutdown or power event. It is a normal operational status and not a fault code. The system will resume normal operation automatically once the timer expires.
How do I fix error code 6 on my Goodman HVAC?
No repair action is needed for code 6. The correct response is simply to wait for the 3-minute timer to expire, after which the compressor will start normally. If the code continues to reappear immediately after clearing, investigate whether the thermostat is short-cycling or whether the control board may be malfunctioning.
Is error code 6 on a Goodman HVAC dangerous or an emergency?
Code 6 is not dangerous and does not represent an emergency. It is a protective feature designed to extend the life of your compressor. Your system is functioning as intended, and no safety risk is associated with this code.
Will resetting my Goodman HVAC clear error code 6?
Resetting the unit by cycling power will not skip the anti-cycle timer. In fact, cycling power is one of the conditions that triggers the 3-minute delay to begin. The timer must be allowed to complete its full cycle before the compressor will start, regardless of whether a reset is performed.
How much does it cost to repair a Goodman HVAC showing code 6?
In most cases, code 6 requires no repair and therefore no cost. If the code is appearing repeatedly due to a faulty control board, board replacement costs typically range from $150 to $600 depending on the board model and labor rates in your area. A thermostat replacement, if that is the source of nuisance cycling, generally runs between $50 and $250 installed.

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