What does Yaskawa GA800 A.145 - Causes & Fix mean?

A.145 is not a valid GA800 fault code. Check the display for a misread parameter number or a 3-letter fault (OC, UV, LF). See real codes.

How do I fix Yaskawa GA800 A.145 - Causes & Fix?

Work through the step-by-step fix below. Start with the quick reset and the most common cause, then check the specific part this guide points to. Most fixes need only basic hand tools and the right replacement part.

Can I keep using my Yaskawa appliance with GA800 showing?

Usually not. Yaskawa appliances show this error when a part or safety circuit is out of range, so running it can stop the cycle or make the problem worse. Diagnose and clear the error before normal use.

What part is most commonly replaced for Yaskawa GA800 A.145 - Causes & Fix?

The parts that most often fix Yaskawa GA800 A.145 - Causes & Fix are listed in the parts section of this guide. Match the part to your exact model and serial number before you buy.

Is Yaskawa GA800 A.145 - Causes & Fix a DIY repair or do I need a technician?

Many fixes are DIY-friendly with basic tools, such as door switches, drain pumps, water inlet valves, thermostats, heating elements, and filters. Sealed-system, refrigerant, gas, or high-voltage work should go to a licensed technician for safety.

Yaskawa GA800 A.145 - Causes & Fix

Yaskawa GA800 A.145 — What It Means

The Yaskawa GA800 VFD does not have a fault code labeled A.145. The alphanumeric format A.XXX refers to parameter numbers used for drive configuration, not fault codes. GA800 fault codes are strictly three-letter numeric combinations such as OC (over current), UV (under voltage), LF (line frequency deviation), or codes beginning with F. for option card errors. If you see A.145 on the display, the drive is likely in parameter setup mode showing parameter A.145, which typically controls a digital input terminal function. A misread display, a typo in documentation, or confusion between parameter view and fault view is the most common explanation. You cannot diagnose or clear A.145 as a fault because it does not exist in the official Yaskawa GA800 troubleshooting manual.

Before You Replace Anything

Technicians sometimes replace the keypad or control board thinking the display is faulty. First verify the drive mode (parameter vs. fault) and consult the manual’s fault code table to confirm the actual code.

Jump to Fix

Common Causes

Display misread (~50%) The operator saw parameter A.145 in setup mode and mistook it for a fault code.
Intended code is F.145 (option card error) (~20%) A rare or firmware-specific option card communication fault that resembles A.145 on certain displays.
Keypad or display malfunction (~15%) A failing or dirty keypad displays garbled characters that look like A.145 instead of a real 3-letter fault.
Documentation typo (~10%) The code was copied incorrectly from a label, log, or third-party manual that does not match Yaskawa standards.
Parameter conflict triggering a real fault (~5%) Parameter A.145 is set to a value that conflicts with hardware wiring, causing a logic fault with a different code (such as bUS or F.001).

Quick Diagnosis

Answer these to narrow it down fast.

Does the drive display show the word 'Fault' or a red LED indicator?

Yes: The drive is in fault mode. Write down the exact code including all letters and dots, then cross-reference it in the GA800 manual fault table. A.145 will not appear.
No: The drive is running or in parameter mode. Press the Mode button to cycle through screens and confirm you are viewing a parameter number, not a fault.

Does the code appear as F.145 (with the letter F and a dot)?

Yes: This may be an option card or communication error. Check that all option cards are seated, verify parameter settings for the installed card, and consult the manual for F-series codes.
No: Recheck the display under good lighting. Clean the keypad window and verify the exact characters. If it still reads A.145 without F or a 3-letter prefix, the drive is showing a parameter.

Is the drive unresponsive or showing garbled characters on other screens?

Yes: The keypad or main control board may be failing. Power-cycle the drive and inspect the keypad ribbon cable. If the problem persists, call a qualified VFD technician.
No: The display is working correctly. The code A.145 is a parameter setting, not a fault. Review recent parameter changes and consult the manual for the meaning of A.145 in your firmware version.

Step-by-Step Fix

Power down the VFD and wait for the DC bus capacitors to discharge (consult the manual for safe wait time, typically 5-10 minutes after the display goes dark).
Power up and observe the display closely during the startup sequence. Note whether the drive enters fault mode (red LED, Fault message) or runs normally.
Press the Mode button repeatedly to cycle through Run, Monitor, and Parameter screens. Confirm whether A.145 appears only in Parameter mode.
Write down the exact code including all letters, numbers, and punctuation. Compare it to the fault code table in the GA800 Maintenance & Troubleshooting Manual.
If no valid fault code is present, review parameter A.145 in the manual to understand its function (typically a digital input terminal assignment). Check that the value matches your wiring and application requirements.
If a real 3-letter fault code appears (such as OC, UV, LF, or bUS), follow the troubleshooting steps for that specific code in the manual.
Contact Yaskawa Technical Support or a certified VFD technician if you cannot identify a valid fault code or if the display behaves erratically after a power cycle.

Parts Often Needed

Part	Notes
Yaskawa GA800 Keypad / Operator Interface	Amazon \| Replace only if the display is confirmed faulty (garbled characters, unresponsive buttons) after testing the ribbon cable.
Yaskawa GA800 Control Board (PCB)	Amazon \| Required if the main board is damaged and the drive does not boot or communicate. Verify part number for your drive frame size and voltage.

When to Call a Pro

Call a qualified VFD technician or contact Yaskawa Technical Support if the drive displays an unrecognized code, if you cannot match the code to the official manual, or if the drive fails to start after a power cycle. VFD troubleshooting involves high DC bus voltages (up to 800 VDC on larger frames) that remain present even after input power is removed. Parameter misconfigurations can cause motor damage or unsafe operation. A technician will verify the actual fault code, check option card seating and firmware version, and use diagnostic software to read internal fault logs that are not visible on the keypad.

Rough cost: A pro service call runs about $150-400 for diagnostic visit and actual fault repair.