Quick Reference
Color | What you see | State | What it means |
⚪ | — | No power. | |
🔵 | Solid | Starting up. | |
🟢 | Solid | Working normally. | |
🟡 | Pulsing | Hypertherm is unreachable. | |
🔴 | Solid | Hypertherm data is unreadable. | |
🟣 | Solid | Diagnostic mode is on (WiFi enabled). |
⚪ The light is off
The bridge isn't getting power.
Check the power cable at both ends.
Confirm the outlet or power strip is live.
If the light stays off, contact support.
🔵 The light is blue
The bridge is starting up. This is normal for the first few seconds after you plug it in.
If the light stays blue for more than a minute, contact support.
🟢 The light is green
Everything is fine. The bridge is powered, on the network, and talking to the Hypertherm.
If you're seeing a problem while the light is green, the bridge isn't the cause. Contact support with details of what you're seeing.
🟡 The light is yellow
The bridge can't get a response from the Hypertherm.
Make sure the Hypertherm is powered on.
Check the cable between the bridge and the Hypertherm — it should be plugged in firmly at both ends and not pinched or damaged.
The bridge retries on its own. As soon as the Hypertherm answers, the light turns green.
If the light keeps pulsing yellow for an extended period even though the Hypertherm is on and the cable looks good, restart the Hypertherm:
Turn the Hypertherm off.
Leave it off for at least 60 seconds. Turning it back on sooner may not fully reset it.
Turn the Hypertherm back on.
The light should turn green shortly after the Hypertherm finishes starting up. You don't need to restart the bridge.
If the light is still yellow after restarting the Hypertherm, contact support.
🔴 The light is red
The Hypertherm is replying, but the bridge can't read what it's saying. Yellow (pulsing) means nothing is coming back at all — red means something is coming back, but it's garbled. This is usually caused by electrical noise on the cable or a damaged cable.
If the light turns green within a few seconds, you can ignore it.
If the light stays red, check the cable between the bridge and the Hypertherm for damage or kinks, and make sure it isn't running alongside high-voltage lines.
If the cable looks fine, unplug the bridge, wait five seconds, and plug it back in.
If the light stays red, contact support.
🟣 The light is purple
Diagnostic mode is on. In diagnostic mode the bridge broadcasts its own WiFi network so you can view its status page. This is not a normal operating state — support may ask you to turn it on, but otherwise it should be off.
To turn diagnostic mode on or off: press and hold the button on top of the bridge until the light pulses purple (about 5 seconds), then release. The same press toggles it — if the light becomes solid purple, diagnostic mode is now on. If the light returns to its normal color, diagnostic mode is now off.
Connecting to the bridge over WiFi
With diagnostic mode on (solid purple):
On a laptop, tablet, or phone, open the WiFi settings and connect to the network named Hypertherm-Bridge. No password is required.
Open a web browser and go to http://192.168.4.1.
The bridge's status page will load, showing its current state and readings from the Hypertherm.
Your device won't have internet access while connected to the bridge — this is expected. If the page doesn't load, make sure you're still connected to Hypertherm-Bridge and that you typed http:// (not https://).
When you're done, disconnect from the network and turn diagnostic mode off.
If none of the steps above fix your issue, contact support with:
The color and pattern of the light.
What you were trying to do when the problem started.