BlinkLookupAppliance codes, decoded

394 codes across 22 model families · checked 2026-09-26

A blink count means nothing until you know the model.

One flash is a lockout on a GMV8 furnace, an invalid heater kit on a Goodman AVPTC, and a long compressor run on an ASX13 air conditioner. Every code here is filed under the model family that defines it, so you get the answer for the machine you actually own.

394 codes indexed

Search a code, a brand, or what the machine is doing. Press / anywhere to jump to search.

394
code pages
22
brand and model combinations
10
brands in scope
0
ads on code pages

Start with the machine in front of you

The same number means completely different things on different machines, so pick the equipment before you pick the code.

47 codesWashing MachineFront-load and top-load washer fault codes, from drain errors to lid lock problems.Browse codes28 codesDryerGas and electric dryer fault codes for vent, heating, and belt problems.Browse codes49 codesDishwasherDishwasher fault codes for drain, water supply, leak, and heating faults.Browse codes30 codesRefrigeratorFridge and freezer fault codes for defrost, fan, ice maker, and sealed system faults.Browse codes86 codesFurnaceGas furnace fault codes. Codes depend on your model family, so check the model number first.Browse codes9 codesAir ConditionerAir conditioner fault codes for compressor, pressure switch, and sensor faults.Browse codes59 codesHeat PumpHeat pump fault codes, including defrost and reversing valve faults.Browse codes39 codesMini SplitDuctless mini split fault codes for indoor and outdoor units.Browse codes47 codesWater HeaterTank and tankless water heater fault codes for gas, electric, and recirculation faults.Browse codes

The four codes that fill up HVAC call tickets

All four are on the Goodman and Amana GMV8 and GMV9 furnace, which is still the platform most US furnaces in service are running.

Open the GMV code table
1 flashLockout after too many ignition tries2 flashesPressure switch stuck closed3 flashesPressure switch stuck open4 flashesHigh limit switch open

How to use this site

1

Find your model number

The data plate is on the side, back, or behind the service panel. The first few characters tell you which family page you need. This is the step most other sites skip, and it is the one that stops you buying the wrong part.

2

Open the model family page

You land on a page that holds one board type and nothing else. If your model is not listed anywhere, tell us and we will add it rather than guessing at a meaning.

3

Read the code, then the do-not list

Each code page leads with a direct answer, then the causes ranked by how often they turn out to be the culprit, the checks that are genuinely safe at home, and what not to touch.

Four things never to do

  1. 01Never bypass, jumper, or defeat a safety switch, high limit, or pressure switch to make the unit run.
  2. 02Never touch a gas appliance if you smell gas. Leave the building and call the gas utility from outside.
  3. 03Never work inside a live electrical compartment without cutting power and confirming it is dead.
  4. 04Never keep resetting a lockout. Every retry repeats the fault that caused it, and gas appliances count them.

How we check every code

Error codes are not universal, and they are not even consistent within a brand. Goodman's own fault code lookup returns eleven mutually incompatible flash tables across the models it supports. So we refuse to publish a number until we know which model family and which control platform it belongs to.

  • Every code page names the model family and the control platform it applies to, so a number never gets answered for the wrong machine.
  • Codes that only exist on parts aggregator sites are not published at all, however confident the wording sounds.
  • Normal status displays and installer setup values are published and labelled as such, so nobody calls a technician for an Idle code.
  • No ads on code pages, no affiliate links, no manufacturer sponsorship.
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Brands in scope