Goodman error codes
30 documented codes with ranked causes, repair costs, and step-by-step guidance.
Goodman heat pump code chart (5) Goodman furnace code chart (24)
Goodman Heat Pump — Stuck in defrost mode Goodman Heat Pump Stuck in Defrost Mode: Causes & Fixes Goodman heat pump stuck in defrost? Learn the causes (defrost board, sensor, reversing valve, refrigerant), safe checks, and repair costs. Goodman Heat Pump — Ice on outdoor unit Goodman Heat Pump Ice on Outdoor Unit: Causes & Fixes Ice on your Goodman heat pump outdoor unit: normal frost vs. a real problem, the likely causes, safe homeowner checks, and typical repair costs. Goodman Heat Pump — Frozen and not defrosting Goodman Heat Pump Frozen and Not Defrosting: Fixes Goodman heat pump iced over and not defrosting? Learn the causes (defrost board, sensor, reversing valve, low charge), safe fixes and repair costs. Goodman Heat Pump — Not cooling Goodman Heat Pump Not Cooling: Causes, Fixes & Costs Goodman heat pump not cooling? Reversing valve, O/B thermostat setup, capacitor, low charge and board causes, safe checks and repair costs of $0 to $3,500+. Goodman Heat Pump — Not heating Goodman Heat Pump Not Heating: Causes, Fixes & Costs Goodman heat pump not heating? Learn the likely causes, from thermostat setup to reversing valve and refrigerant faults, plus safe checks and repair costs. Goodman Furnace — Runs constantly but not enough heat Goodman Furnace Runs Constantly But Not Enough Heat Goodman furnace running nonstop but can't warm the house? Causes from dirty filters to failing heat exchangers, plus DIY checks and repair costs. Goodman Furnace — Blower not running Goodman Furnace Blower Not Running: Causes & Fixes Goodman furnace blower not running? Causes from a bad blower motor, capacitor, or control board, plus DIY checks, repairs and honest cost ranges. Goodman Furnace — Flame sensor problems Goodman Furnace Flame Sensor Problems: Fixes & Costs Goodman furnace flame sensor problems cause weak flame signal and short cycling. Causes, cleaning, and repair costs from $0 to $1,200. Goodman Furnace — Pressure switch stuck open Goodman Furnace Pressure Switch Stuck Open: Fixes Goodman furnace pressure switch stuck open? Causes include blocked vent, bad inducer, condensate clogs. Fixes and costs from $0 DIY to $1,200. Goodman Furnace — Blower won't shut off Goodman Furnace Blower Won't Shut Off: Causes & Fixes Goodman furnace blower running nonstop? Common causes are thermostat fan settings, limit switch, or bad control board — with DIY checks and repair costs. Goodman Furnace — Blowing cold air Goodman Furnace Blowing Cold Air: Causes & Fixes Goodman furnace blowing cold air? Causes include thermostat fan settings, failed ignition, flame-sensor faults & limit trips. Fixes and $0–$1,200 costs. Goodman Furnace — Clicking but not starting Goodman Furnace Clicking But Not Starting: Fixes Goodman furnace clicks but won't start? Causes include a stuck pressure switch, failing inducer, weak igniter, or control board fault. Fixes and costs inside. Goodman Furnace — Ignition lockout Goodman Furnace Ignition Lockout: Causes, Fixes & Costs Goodman furnace ignition lockout means repeated failed ignition. Causes, safe checks, technician fixes and honest repair costs ($0 DIY–$1,200). Goodman Furnace — Keeps shutting off Goodman Furnace Keeps Shutting Off: Causes & Fixes Goodman furnace keeps shutting off? Common causes are dirty filters, flame sensor, limit and pressure switches. Fixes and costs from $0 DIY to $1,200. Goodman Furnace — Leaking water Goodman Furnace Leaking Water: Causes, Fixes & Costs Goodman furnace leaking water? Causes include clogged condensate lines, cracked traps, and inducer issues. Fixes and costs from $0 DIY to $1,800+. Goodman Furnace — Loud bang on startup Goodman Furnace Loud Bang on Startup: Causes & Fixes A loud bang when your Goodman furnace ignites usually means delayed ignition or ductwork oil-canning. Causes, safe checks, fixes and $0–$3,000+ costs. Goodman Furnace — Won't ignite Goodman Furnace Won't Ignite: Causes, Fixes & Costs Goodman furnace won't ignite? Common causes include a bad igniter, weak flame sensor, or no gas. See fixes and repair costs from $0 DIY to $1,200+. Goodman Furnace — Short cycling Goodman Furnace Short Cycling: Causes, Fixes & Costs Goodman furnace short cycling causes: dirty filter, overheating limit, flame sensor, oversizing. DIY checks plus repair costs from $0 to $1,800+. Goodman Furnace — Won't turn on Goodman Furnace Won't Turn On: Causes, Fixes & Costs Goodman furnace won't turn on? Causes from blown fuses to failed boards, safe DIY checks, tech diagnosis and repair costs from $0 to $1,800. Goodman Furnace — 3 flashes Goodman Furnace 3 Flashes: Pressure Switch Stuck Open Goodman furnace 3 flashes means pressure switch stuck open. Causes from blocked flue to condensate backup, plus fixes and repair costs. Goodman Furnace — 4 flashes Goodman Furnace 4 Flashes: Open High-Limit Switch Fix Goodman furnace 4 flashes means an open high-limit from overheating — dirty filter or airflow. Causes, fixes and $0–$1,200+ costs. Goodman Furnace — 5 flashes Goodman Furnace 5 Flashes: Flame With No Call for Heat Goodman 5 flashes means flame sensed with no heat call — a leaking gas valve or sensor/wiring fault. Causes, fixes and $150–$650 repair costs. Goodman Furnace — 7 flashes Goodman Furnace 7 Flashes: Low Flame Signal Fixes Goodman furnace 7 flashes means low flame signal from a dirty sensor, poor ground, or misaligned flame. Causes, fixes and repair costs explained. Goodman Furnace — 8 flashes Goodman Furnace 8 Flashes: Igniter Relay Problem Fix Goodman 8 flashes means an igniter relay or circuit fault. Causes, safe checks, technician diagnosis and repair costs from $0 DIY to $1,200.