OEM PCBBF112S / PCBBF134S / B18099-13 / 50A55-843 • Single Red LED & 7-Segment Matrix
Goodman, Amana & Daikin Furnace Blink Codes Decoder (1–7 Red Flashes)
⚡ Instant OEM Answer (Goodman / Amana / Daikin Red LED System):
On Goodman, Amana, and Daikin furnaces, 4 Flashes indicates an open Primary High Limit Switch (
20162904, caused by a dirty filter in 65% of calls); 3 Flashes indicates an open Inducer Pressure Switch (0130F00505, -0.75" WC); 1 Flash or 7 Flashes indicates Ignition Lockout / Low Flame Sense (0130F00010 sensor below 0.8 µA DC or 0130F00008S igniter open); and 6 Flashes indicates a tripped manual Flame Rollout Switch.
Single-LED & ComfortBridge 7-Segment Reference
Complete Goodman, Amana & Daikin LED & 7-Segment Fault Matrix
Covers Goodman GMP, GMT, GMS8, GMES80, GMSS96, GMEC96, GMVC96, Amana AMSS96, AMEC96, AMVC96, and Daikin DM80/DM96 furnaces using single-LED (PCBBF112S, PCBBF134S, B18099-13, 50A55-843) and 3-digit 7-segment (PCBBF136S, PCBBF140, ComfortBridge) boards.
| Single Red LED | 7-Segment Code | Goodman / Amana OEM Meaning | OEM Replacement SKU & Triage Fix |
|---|---|---|---|
| Steady Red ON | IdL / 1Ht / 2Ht | Normal Standby or Active Heating | Healthy 24VAC & intact 3A purple fuse. Check thermostat W1 call. |
| 1 Flash | EE0 | 1-Hour System Ignition Lockout (3 Retries) | Polish 0130F00010 Flame Rod (2.0–6.0 µA DC) or test 0130F00008S Igniter (40–75 Ω Carbide / 11–20 Ω Nitride). |
| 2 Flashes | EE1 | Pressure Switch Stuck Closed (Inducer Off) | Drain droplet from silicone hose or swap welded 0130F00505 Pressure Switch ($38). |
| 3 Flashes | EE2 / EEA | Pressure Switch Stuck Open (Inducer Running) | Ream metal inducer hose barb with paperclip, flush condensate trap, clear outdoor PVC pipes. |
| 4 Flashes | EE3 / EEL | Primary or Auxiliary High Limit Switch Open | Replace dirty air filter immediately; test 20162904 Primary Limit & blower run capacitor µF. |
| 5 Flashes | EE4 | False Flame Detected With Gas Valve Closed | Inspect White-Rodgers 36G22 / 36J22 gas valve for shutoff seep or moisture on board flame pin. |
| 6 Flashes | EE5 | Manual-Reset Flame Rollout Switch Open | CRITICAL: Inspect tubular heat exchanger & flue before pressing 10123529 rollout reset button. |
| 7 Flashes | EE6 | Weak Flame Microamp Sense (Or Lockout on 50A55) | Clean 0130F00010 Flame Sensor rod before marginal 0.9–1.3 µA drops into midnight lockout. |
| Rapid Continuous | EEJ / E11 | 115V Line Polarity Reversed or Floating Ground | Add $14 Neutral-Ground Bonding Plug on portable inverter generators; verify L1-to-Ground 120VAC. |
💡 Pro Goodman Attic Triage Tip (Hidden Blower Housing Auxiliary Limits):
If your horizontal attic Goodman or Amana furnace continues blinking 4 Flashes (`EE3`) even after the unit is cold and the main rectangular `20162904` primary limit reads `0.0 Ω`, reach into the lower blower compartment and feel the two small disc switches screwed to the curved steel blower scroll housing. Many horizontal Goodman units use manual-reset button auxiliary limits (`B13701-54`) that stay open indefinitely after a power blink until you press the tiny red pin between the two wire spades!