What does 'no | H2O' mean on my Fronius VR 5000?
- MMichelle GlennSep 3, 2025
The error 'no | H2O' indicates that the coolant flow rate is too low. Check coolant flow rate and cooling unit, including cooling circuit.

What does 'no | H2O' mean on my Fronius VR 5000?
The error 'no | H2O' indicates that the coolant flow rate is too low. Check coolant flow rate and cooling unit, including cooling circuit.
What does 'Mains overvoltage' mean on my Fronius Industrial Equipment?
The 'Mains overvoltage' error indicates that the mains voltage has risen above the tolerance range. Check the mains voltage.
What does 'Mains undervoltage' mean on my Fronius Industrial Equipment?
The 'Mains undervoltage' error indicates that the mains voltage has fallen below the tolerance range. Check the mains voltage.
What does 'PHA | SE' mean on my Fronius VR 5000 Industrial Equipment?
The error code 'PHA | SE' indicates a phase failure. Check the mains fuse, the mains lead, and the mains plug.
What does the 'E-Stop' error mean on my Fronius Industrial Equipment?
The 'E-Stop' error indicates that the "External stop" has tripped. Remedy the event that triggered the external stop.
What does 'no | UrL' mean on my Fronius VR 5000?
The error 'no | UrL' means the VRD option has tripped too early. Check whether all welding power-leads and control lines are connected. Switch off the power source, wait 10 seconds and switch the power source back on again.
What does 'Err | Ur' mean on my Fronius VR 5000?
The error code 'Err | Ur' indicates that, if the VRD option is available, the open circuit voltage limit of 35 V has been exceeded. Switch off power source and wait for 10 seconds before switching it back on.
What does 'Err | PE' mean on my Fronius VR 5000 Industrial Equipment?
The error 'Err | PE' means the earth current watchdog has triggered the safety cut-out of the power source. Switch off the power source, place it on an insulating surface, connect the grounding (earthing) cable to a section of the workpiece closer to the arc, wait 10 seconds, and switch the power source back on.
| Brand | Fronius |
|---|---|
| Model | VR 5000 |
| Category | Industrial Equipment |
| Language | English |
Covers general safety standards, operator qualifications, and handling of danger notices.
Defines intended purpose, prohibited uses, and environmental operating conditions.
Details the responsibilities of operators and personnel regarding safety and instructions.
Discusses mains connection requirements and risks from mains and welding current.
Covers dangers from toxic gases, flying sparks, and electromagnetic fields.
Highlights hazards from moving parts, welding wire, and high temperatures.
Covers safe handling and risks associated with shielding gas cylinders.
Provides guidelines for safe setup, transport, and handling of the device.
Details safety checks, use of original parts, and maintenance procedures.
Covers proper disposal methods and the meaning of safety symbols.
Describes the device concept, its requirements, and application area.
Explains the safety symbols and warnings attached to the device.
Details the functions and arrangement of parameters on the control panels.
Explains the buttons, adjusters, and indicators of the manual control panel.
Describes the use of adjustment aids for material/shielding gas combinations.
Covers activating/deactivating the keylock and accessing service parameters.
Details the Synergic A and Synergic B control panel functions and layouts.
Illustrates connections on the front, rear, and side of the wire-feed unit.
Identifies the socket for swivel pin on the underside of the wire-feed unit.
Covers safety warnings, intended purpose, and setup regulations.
Guides on securely placing the wire-feed unit on the power source.
Details connecting the wire-feed unit using the interconnecting hosepack.
Instructions for connecting MIG/MAG manual welding torches.
Provides instructions and safety precautions for feed roller installation/replacement.
Guides for securely inserting wirespools and basket-type spools.
Instructions and safety tips for feeding the wire electrode into the unit.
Covers setting contact pressure for wirefeeding and adjusting the wirespool brake.
Lists the necessary requirements before commissioning the wire-feed unit.
Explains the power limitation safety feature for MIG/MAG welding.
Details MIG/MAG modes, symbols, and their explanations.
Covers general tasks, overview, standard synergic, and manual welding.
Guides for MMA welding setup, manual control, and synergic A panel use.
Explains the HotStart and Anti-stick functions for optimal welding results.
Instructions for saving, retrieving, and deleting operating points.
Describes accessing and changing parameters in the setup menu.
Lists and explains setup parameters for MIG/MAG standard manual welding.
Details setup parameters for MIG/MAG standard synergic welding.
Covers setup parameters for MMA welding, including reset functions.
Defines parameters for the 'Special 4-step mode' in the setup menu.
Guides on navigating and changing parameters in the Level 2 setup menu.
Procedure for measuring welding circuit resistance 'r' for consistent results.
Explains how to display welding circuit inductivity 'L' and hosepack laying.
Covers power source malfunctions, lack of welding current, and torch issues.
Addresses issues like no gas shield, irregular wire speed, and hot torch.
Details displayed service codes and procedures for error resolution.
Outlines routine care, maintenance checks, and disposal guidelines.
Provides technical specifications for VR 5000 and VR 5000 noSpool units.
Presents tables for manual control panel settings with various parameters.
Lists welding programs for TransSteel 3500 Euro with material, gas, and diameter.
Details welding programs for TransSteel 5000 Euro, including standard and special assignments.
Presents welding programs for TransSteel 3500 US, covering various materials and gases.
Provides welding programs for TransSteel 5000 US, including standard and special assignments.
Lists welding programs for TransSteel 3500 Yard, detailing material and gas combinations.
Details welding programs for TransSteel 5000 Yard, covering standard and special assignments.
Provides a concise overview of setting up and operating the TransSteel Synergic.
Summarizes MIG/MAG setup parameters, service parameters, and operating points.
Briefly outlines setup procedures for rod electrode welding.
Lists spare parts for the VR 5000 series wire-feed units with part numbers.