The codes on the board
Amana furnace and AC codes,
and what each means
Amana furnace codes depend on the board, just like its Goodman siblings: older boards blink a light 1 to 7 times, newer ones show a short code like EE2. Find the model number on the rating plate, match it to a table, and go by the chart on your furnace’s door if it has one. Write the code down before you reset anything, because cutting the power erases it.
Current Amana furnaces with a display (AR9S92, AR9S96, AD9S96, AR9T96, AD9T96)
These boards show a short code on a small display. IdL means it’s idle and fine. Goodman’s GR9S and GR9T furnaces use the same codes.
Amana furnace error codes, current single-stage and two-stage boards| Code | What it means | What it usually takes |
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| EE0 | Lockout after 3 tries to light | Gas supply, igniter or flame sensor |
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| EE1 | Pressure switch already closed when the heat started | A stuck pressure switch or its wiring |
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| EE2 | Pressure switch never closed | A blocked vent or air intake, a clogged drain, or a weak inducer motor |
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| EE3 | High limit open: the furnace ran too hot | Start with the filter and the airflow |
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| EE4 | Flame sensed with no call for heat | Shut the gas off and call |
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| EE5 | Open fuse | A short in the low-voltage wiring, often at the thermostat or outdoor unit |
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| EE6 | Weak flame signal | Usually a flame sensor cleaning |
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| EEA | 115-volt polarity reversed | A wiring fix |
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| E11 | Rollout switch open | Call: a rollout trip needs a look at the burners and venting |
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| EAL | The R-32 sensor found a refrigerant leak; the furnace only runs the fan | A leak at the indoor coil to find and fix |
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Source: Amana AR9S92 and AR9S96 service manual (2024). Codes vary by model and control board: the chart printed on your unit, or its manual, is the final word.
Older Amana single-stage furnaces with a blinking light (AMS8, ADSS8, AMSS92, AMSS96)
Count the blinks through the window in the lower door. This board tries again by itself an hour after a lockout, and cutting the power erases the code.
Amana furnace flash codes, older single-stage boards| Blinks | What it means | What it usually takes |
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| Steady on | Normal operation | Nothing at the board: the fault is somewhere it doesn’t watch |
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| 1 | Lockout: no flame after 3 tries | Gas supply, igniter or flame sensor |
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| 2 | Pressure switch closed when it shouldn’t be | A stuck pressure switch |
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| 3 | Pressure switch didn’t close | A blocked vent or intake, a clogged drain or a weak inducer |
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| 4 | Primary or auxiliary limit open | A dirty filter or restricted ductwork, first |
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| 5 | Flame sensed with no call for heat | Shut the gas off and call |
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| 6 | Rollout limit open | Call: a rollout trip needs a look at the burners and venting |
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| 7 | Weak flame signal | Usually a flame sensor cleaning |
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| Rapid flashing | Reversed polarity | A wiring fix |
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Source: Amana AMSS9 single-stage furnace service manual (2014). Codes vary by model and control board: the chart printed on your unit, or its manual, is the final word.
Amana ComfortNet outdoor units (ASXC and ASZC): the yellow light
These two-stage condensers and heat pumps blink a yellow light on the outdoor board, and a ComfortNet thermostat shows the fault with a two-digit code. Newer inverter units (AXV9S, AZV9S) use their own display, and we haven’t found Amana’s public list for those, so we read them on site.
Amana ComfortNet air conditioner and heat pump fault codes| Code | What it means | What it usually takes |
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| 01 | Low side fault: low pressure lockout | Low refrigerant, which means a leak to find |
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| 02 | High side fault: high pressure lockout | A blocked or dirty outdoor coil, first |
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| 03 | Short cycling | The thermostat calling on and off |
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| 04 | Locked rotor | The compressor, often seized |
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| 05 | Open circuit | Power to the compressor cut off, or a failed compressor |
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| 06 | Open start circuit | The compressor’s start winding or its wiring |
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| 07 | Open run circuit | The compressor’s run winding or its wiring |
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| 08 | Line voltage too low or too high | The power supply to the unit |
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| 09 | Control voltage under 18 volts | The transformer or the low-voltage wiring |
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Source: Amana and Daikin ComfortNet condensing unit service manual (2015). Codes vary by model and control board: the chart printed on your unit, or its manual, is the final word.