About BlinkLookup

A fault code is a lookup problem that pretends to be a reading problem. Most people searching for one have a machine in front of them and no way to tell whether the number they are looking at belongs to their unit at all.

The trap is that the number alone is almost never enough. Goodman's own fault code lookup publishes eleven mutually incompatible flash tables across the models it supports, so "one flash" is a different fault on a GMV8 than on a GMSS9, and a third fault on an AVPTC. Publishing a single confident answer for "1 flash" would be confidently wrong for most of the readers who landed on it.

So the whole structure of this site follows the model, not the number. Every code page sits at /{appliance}/{brand}/{family}/{code}/ and names the model family it applies to. If we cannot name the family, we do not publish the code.

A code only goes up when we can tie it to a specific brand, appliance type, and control platform. We do not publish from memory, from another code site, or from a forum post, however many people repeat it.

Our data is grouped by control platform rather than by code number. A shorthand entry inside a longer list inherits its meaning, severity, and safety notes from the platform it belongs to, so a number that means one thing on one board can never quietly mean something else on another.

Severity is our own editorial judgement. No manufacturer tells you which of their codes will stop a furnace tonight and which will wait until morning, so we make that call and we say plainly that we made it.

Every page states its last-reviewed date. When a service manual is revised, or a reader or technician sends a correction with a model number, the date changes.

Cost figures are typical US ranges for parts and labour, published so a homeowner can plan. They are never a quote, and each page says what moves the price.

Normal status displays and installer setup values are published and labelled as such. Plenty of sites list them as errors, which sends people to a technician for a machine that is working exactly as designed.

We separate what a homeowner can safely check from what belongs to a licensed technician, and that line is drawn at gas, refrigerants, high voltage, and combustion air. We do not publish bypass, jumper, or defeat procedures for safety switches.

BlinkLookup is independent. We are not affiliated with, endorsed by, or sponsored by any appliance manufacturer, and we accept no payment for a listing, a position in a ranking, or a favourable description.

Code tables change between model years and board revisions, and we will get things wrong. If you find something inaccurate, send the model number, the board revision if it is visible, and the manual you checked against. We correct the page and update the date.

We would rather have a hundred accurate codes than a thousand thin ones. Pages that exist only to catch a search are worse than no page, because they cost you a service call.

We cover 9 equipment types and hold 26 brands in the taxonomy. 9 sections are published today, because a section with no checked code behind it is a dead end for a reader and a liability for us.

The published work is HVAC first, since the long tail there is genuinely useful and genuinely underserved: someone standing in a basement with a flashing light usually cannot tell whether it is safe to keep running, and most pages either send them straight to a contractor or tell them to bypass a safety switch.