Danfoss
Automation Repair
We repair Danfoss VLT drives at component level, from the 2800 and 5000 series through to the FC102, FC202 and FC302 units used on pumps, fans and conveyors.
Every unit is assessed free of charge, repaired at component level in our Bolton workshop and returned fully tested with a 12-month warranty and test report.
- 24/7 emergency call-outs
- UK-wide service
- 12-month warranty
Danfoss range we repair
Danfoss is a global manufacturer of industrial automation, variable speed drives, inverters, soft starters and motion control equipment used across manufacturing, processing, pumping, HVAC, material handling and other industrial applications.
If your model is not listed, ask us. We repair current, obsolete and discontinued units.
How we help with Danfoss:VFD RepairsRenewable Energy Equipment Repairs
Key features of our service
Common faults we repair
Danfoss reports faults as numbered alarms, from the VLT 2000 and 5000 series through to the FC102 and FC302. Alarms 13, 14 and 29 are the three we see most.
- Alarm 2 – live zero error (analogue reference or feedback lost)
- Alarm 4 – mains phase loss (supply, fuses, rectifier)
- Alarm 7 – DC link overvoltage (deceleration, braking resistor)
- Alarm 8 – DC link undervoltage (supply dip, soft-charge circuit)
- Alarm 9 – inverter overloaded (I²t limit or motor data)
- Alarm 13 – overcurrent (power stage, motor insulation, output short)
- Alarm 14 – earth fault (motor or cable insulation)
- Alarm 25 – brake resistor short-circuited
- Alarm 29 – heatsink over temperature (fan, blocked airflow)
- Alarm 38 – internal fault (control card or option card)
Why repair rather than replace?
Replacing a failed Danfoss drive or automation component can be expensive, particularly when the original equipment is obsolete or difficult to source. Repairing the existing equipment can be a faster, more cost-effective solution while avoiding unnecessary replacement, reprogramming and commissioning.
- Repair is also the only option for obsolete and discontinued units, where a like-for-like replacement no longer exists. Where a repair is not economic, we say so and can supply a tested refurbished unit instead.
- Component-level diagnostics and repair, never board swapping
- Every repair covered by a 12-month warranty
- Free fault assessment and a quote within 24 hours of arrival
- In-house soak and load testing before your unit goes back
- All major brands and models, including obsolete and discontinued units
- 24/7 emergency call-outs for production-critical breakdowns
- Nationwide collection and delivery
- Fixed-price quotes agreed before any work starts
How it works
Free fault assessment by our engineers.
Fixed-price quote within 24 hours of your unit arriving.
Component-level repair, full functional test and burn-in.
Test report and 12-month warranty included.
No fix, no fee on standard and high-priority repairs.
Danfoss repair questions
24/7 emergency call-outs
Production line down?
Call 0161 399 0042 for 24/7 emergency call-outs, or book a repair for a free fault assessment and a fixed-price quote within 24 hours of your unit arriving. 12-month warranty.