Posts

All the articles I've posted.

• York Furnace 7 Flashes - Causes & Fix

  30 May, 2026

  York 7 flashes means low flame sense or ignition lockout. Most often a dirty flame sensor or clogged burner. Clean the sensor first.

• Rheem Furnace 2 Flashes - Causes & Fix

  30 May, 2026

  Rheem 2-flash code means pressure switch stuck closed. Usually caused by failed switch, blocked tubing, or vent restriction.

• Trane Furnace 2 Flashes - Causes & Fix

  30 May, 2026

  2 flashes on a Trane furnace means ignition lockout or failure to sense flame. Most common fix: clean the flame sensor rod.

• Goodman Furnace 1-Flash Error Code - Causes & Fix

  30 May, 2026

  1-flash code means ignition or flame failure. Most often caused by dirty flame sensor or weak igniter. Check gas supply and clean sensor.

• Carrier Furnace Error Code 14 - Causes & Fix

  30 May, 2026

  Error 14 means ignition lockout after repeated flame failures. Most often a dirty flame sensor or failed igniter stops the furnace.

• Carrier Error Code 34 - Ignition Proving Failure Fix

  30 May, 2026

  Code 34 means the Carrier furnace tried to light but the board didn't sense flame. Clean or replace the flame sensor first.

• Honeywell Thermostat E1 Error Code - Causes & Fix

  30 May, 2026

  E1 means replace the thermostat on TH1100/TH1110/TH1210 models. On other Honeywell units it signals a sensor or setup fault. Check wiring first.

• Lennox E250 Error Code - Causes & Fix

  30 May, 2026

  E250 means the limit switch circuit is open. Usually caused by blocked airflow or a failed limit switch. Check filter and airflow first.

• Trane Furnace 5 Flashes - Causes & Fix

  30 May, 2026

  5 flashes means flame sensed when gas valve is off. Usually a dirty or grounded flame sensor. Clean or replace the sensor to fix it.

• American Standard Furnace 4 Flashes - Causes & Fix

  30 May, 2026

  4 flashes means an open high-limit or roll-out switch. Most often caused by a clogged air filter or blower problem restricting airflow.

• Navien E012 Error Code - Causes & Fix

  30 May, 2026

  E012 means flame loss during operation. Most common fix: check gas pressure and clean or replace the flame rod sensor assembly.

• Yaskawa GA800 E28 Fault - Serial Watchdog Timeout Fix

  30 May, 2026

  E28 on Yaskawa GA800 means serial interface watchdog timeout. Drive lost control data from PLC or controller. Diagnose comms and restore link.

• Yaskawa GA800 E25 Fault - Causes & Fix

  30 May, 2026

  E25 on a Yaskawa GA800 means main circuit power establishment error. Learn causes, diagnostic steps, and when to call support.

• Yaskawa GA800 E24 Fault - Causes & Fix

  30 May, 2026

  E24 on a Yaskawa GA800 indicates external 24 V control power is present while main circuit power has dropped out or is absent.

• Yaskawa GA800 E23 Fault - Causes & Fix

  30 May, 2026

  Yaskawa GA800 E23 fault means the external regenerative braking resistor is disconnected or incorrectly wired. Fix by inspecting and repairing the resistor circuit.

• Yaskawa GA800 E22 Fault Code - Causes & Fix

  30 May, 2026

  E22 is not a standard Yaskawa GA800 fault code. Learn how to verify the actual code, reset the drive, and contact support with the right info.

• Yaskawa GA800 E21 Fault - Causes & Fix

  30 May, 2026

  E21 on the Yaskawa GA800 signals a Z pulse correction error in the encoder feedback loop. Fix wiring, encoder, or feedback circuit issues.

• Yaskawa GA800 E18 Error - Causes & Fix

  30 May, 2026

  Yaskawa GA800 E18 (Back EMF Error) occurs when induced-voltage tuning results fall outside range. Fix motor data and rerun auto-tune.

• Yaskawa GA800 E17 Fault - Causes & Fix

  30 May, 2026

  E17 is not a standard Yaskawa GA800 fault code. Learn how to identify the correct code and troubleshoot your drive safely.

• Yaskawa GA800 E16 Fault Code - Causes & Fix

  30 May, 2026

  Yaskawa GA800 E16 (oPE16) means Energy Saving Constants Error. Learn how to check parameter ranges and clear this operator fault.

• Yaskawa GA800 E15 Fault - Causes & Fix

  30 May, 2026

  Yaskawa GA800 E15 indicates a communication error on an installed option or control link. Learn how to diagnose and repair this fault.

• Yaskawa GA800 E14 Fault - Causes & Fix

  30 May, 2026

  E14 is not a documented GA800 fault code. Learn how to identify the correct fault, verify your drive model, and follow Yaskawa's reset procedure.

• Yaskawa GA800 E13 Fault Code - Causes & Fix

  30 May, 2026

  E13 is not a documented GA800 fault code. Learn how to verify the actual displayed fault on your Yaskawa GA800 drive and troubleshoot correctly.

• Yaskawa GA800 E12 Fault Code - Causes & Fix

  30 May, 2026

  Yaskawa GA800 E12 (Er-12) is a current detection error. Learn the real causes, step-by-step diagnostics, and repair actions.