Goodman Troubleshooting
Goodman Furnace Error Codes — What the Flashes Mean
Goodman furnaces report faults with a red LED that flashes in a repeating count — visible through the little window in the blower door. Brooklyn is full of Goodman and Amana equipment, so we read these codes every week. Here's the plain-English version.
Anatomy of the system
Numbered parts below match the cost table further down — so you can see exactly where the failure usually sits.
Common Goodman blink codes
Count the flashes between pauses on the red LED. Goodman and Amana are the same family, so these apply to both. The legend sticker inside your blower door is the authority for your exact model.
| Code | What it usually means | What to do |
|---|---|---|
| 1 flash | Ignition failed after several tries — furnace locked out | One reset at the breaker. If it locks out again, call. |
| 2 flashes | Pressure switch stuck closed before startup | Call — switch or inducer diagnosis. |
| 3 flashes | Pressure switch open — venting or inducer motor problem | Check the outside vent pipe for snow, leaves, or nests. If clear, call. |
| 4 flashes | High limit open — furnace overheating, usually airflow | Change the filter. If it repeats with a clean filter, call. |
| 5 flashes | Flame sensed when there should be none | Shut the furnace off and call right away. |
| 7 flashes | Weak flame signal — usually a dirty flame sensor causing short cycling | Call — sensor cleaning is a quick, inexpensive visit. |
| 8 flashes | Igniter problem | Call — igniter replacement. |
| 9 flashes | High-stage pressure switch fault (two-stage furnaces) | Call — needs on-site diagnosis. |
| Continuous rapid flash | Reversed polarity or power problem at the board | Call — wiring-level issue. |
| No light at all | No power to the board — switch, fuse, breaker, or board | Check the furnace switch and breaker. If both are on, call. |
If you smell gas at any point: don't touch switches, leave the building, and call 911 and your gas utility from outside. Codes can wait — gas can't.
Signs and symptoms
What to notice before calling a technician. The red callouts mean stop and call us immediately.
- 1
Find the LED and count the flashes
Look through the small plastic window in the lower furnace door — you'll see a red LED. Count the flashes between pauses; that count is the code. The legend sticker on the inside of the door lists your model's exact table.
What to notice
- Count the flash pattern twice to be sure
- Snap a photo of the legend sticker inside the door
- Note what the furnace does — clicks, hums, starts then stops
Still not working? Call (347) 997-3360 — diagnostic visits are flat-rate, quoted before we start.
- 2
One safe reset — once only
Flip the furnace's power switch (looks like a light switch on or near the unit) off for 60 seconds, then back on. A 1-flash ignition lockout will retry after a reset. If it locks out again, stop — the underlying cause needs a tech.
Never bypass a safety switch
Every one of these codes is a safety circuit doing its job. Jumping a pressure switch or limit switch to force heat is how carbon monoxide gets into living space. Don't do it, and don't let anyone else do it. - 3
The two things worth checking yourself
A clogged filter causes 4-flash overheating trips, and a blocked outside vent causes 3-flash pressure faults. Both take two minutes to look at and cost nothing.
What to notice
- Look at the filter — replace it if it's gray with dust
- Find where the vent pipe exits the building and make sure it's clear
Still not working? Call (347) 997-3360 — diagnostic visits are flat-rate, quoted before we start.
- 4
Text us the code
Text the flash count and a photo of your furnace's data plate to (347) 997-3360. We'll tell you what it means, how urgent it is, and arrive with the likely part — most Goodman parts are common stock.
What this usually costs in Brooklyn
When a technician diagnoses the issue, here's the typical cost range for the repair. The exact number depends on parts, access, and how long it's been failing.
| Issue | Likely cause | Typical range |
|---|---|---|
| Diagnostic visit | Confirm what tripped the code | $125 – $225 |
| Flame sensor cleaning | 7 flashes — weak flame signal | $125 – $250 |
| Igniter replacement | 8 flashes / 1-flash lockouts | $225 – $450 |
| Pressure switch replacement | 2–3 flash pressure faults | $225 – $475 |
| High-limit switch replacement | 4 flashes — overheating | $200 – $400 |
| Inducer motor replacement | 3 flashes — venting/inducer | $450 – $950 |
| Control board replacement | Rapid-flash / dead-board faults | $450 – $900 |
Diagnostic visit
Confirm what tripped the code
$125 – $225
Flame sensor cleaning
7 flashes — weak flame signal
$125 – $250
Igniter replacement
8 flashes / 1-flash lockouts
$225 – $450
Pressure switch replacement
2–3 flash pressure faults
$225 – $475
High-limit switch replacement
4 flashes — overheating
$200 – $400
Inducer motor replacement
3 flashes — venting/inducer
$450 – $950
Control board replacement
Rapid-flash / dead-board faults
$450 – $900
Typical range. Final cost confirmed on site after diagnosis.
Common Questions
What to do next
Call (347) 997-3360 or book a diagnostic. Tell us what you observed — the sounds, the symptoms, when it started — and we'll know exactly what to check.
Do not attempt any repairs yourself. Gas, electrical, and refrigerant work requires a licensed technician.
Need a Brooklyn tech today?
Same-day diagnostics when we can fit you in. Flat-rate visit, quoted before we start.
(347) 997-3360