The Liebherr R930 excavator features a comprehensive instrument cluster with specific warning lights for its powerful diesel engine, hydraulic system, and safety interlocks. These indicators help operators monitor critical functions and respond to faults promptly.
Liebherr R930 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | This red warning indicates a critical fault that demands immediate engine shutdown on your R930, such as low oil pressure or high coolant temperature. | Stop the engine safely and check the fault display for the specific issue. | |
| Master Caution | AMBER | An amber caution on the R930 signals a non-critical warning that requires attention soon, like a clogged air filter or low hydraulic oil level. | Refer to the onboard display to identify the cause and schedule service. | |
| Check Engine (MIL) | AMBER | The check engine light illuminates when the R930's engine control unit detects an emissions or performance fault, such as a sensor failure or DPF issue. | Have the engine diagnostics scanned by a Liebherr technician. | |
| Engine Oil Pressure | RED | If this red light comes on, your R930's engine oil pressure is dangerously low, risking severe engine damage if not addressed immediately. | Stop the engine and check oil level; if low, top up and restart; if light persists, do not run the engine. | |
| Battery / Charging | RED | This red indicator shows the R930's alternator is not charging properly or the battery voltage is low, potentially causing electrical failures. | Check alternator belt and wiring; if light stays on, service the charging system. | |
| Coolant Temperature | RED | The red coolant temperature light warns that the R930's engine is overheating, which can lead to head gasket failure or engine seizure. | Stop the engine, let it cool, then check coolant level and fan operation. | |
| Hydraulic System | RED | A red hydraulic warning on the R930 indicates a critical fault like low hydraulic oil level, high temperature, or filter blockage that could damage the pump. | Immediately stop work, check hydraulic oil level and temperature, and inspect for leaks. | |
| Hydraulic Oil | AMBER | This amber light on the R930 advises that the hydraulic oil level is low or the oil temperature is approaching the limit, requiring timely attention. | Top up hydraulic oil if needed, or allow the system to cool down before resuming operation. | |
| Engine Oil Temperature | AMBER | When amber, the R930's engine oil temperature is higher than optimal, often due to heavy load or poor ventilation, potentially reducing lubrication. | Reduce engine load and run at idle until temperature drops; check oil cooler cleanliness. | |
| Air Filter | AMBER | The air filter indicator on the R930 signals that the engine air intake is restricted, reducing power and fuel efficiency. | Replace the air filter element as per the maintenance schedule. | |
| Fuel Filter / Water Separator | AMBER | This amber light means the R930's fuel filter or water separator needs draining or replacement to prevent injector damage. | Drain water from the separator; if light stays on, replace the fuel filter. | |
| Water in Fuel | AMBER | When illuminated, water has accumulated in the R930's fuel system, which can cause injector corrosion and engine misfire. | Drain the water separator immediately and check for fuel contamination. | |
| Low Fuel | AMBER | The low fuel light warns that the R930's fuel level is low, risking air ingress into the fuel system if run dry. | Refuel as soon as possible to avoid fuel system purging. | |
| Glow Plug / Preheat | AMBER | This amber light on the R930 indicates the glow plugs are active for cold starting; wait until it turns off before cranking. | Wait for the light to go out before starting the engine. | |
| Seat Belt | RED | The red seat belt light on the R930 reminds the operator to fasten the seat belt for safety; the machine may not move until belted. | Fasten the seat belt before operating the excavator. | |
| Swing / Slew Lock | GREEN | A green swing lock light indicates that the upper structure of the R930 is locked from swinging, typically when traveling or in transport position. | Release the swing lock before rotating the upper structure. | |
| Work Lights | BLUE | The blue work lights indicator shows that the additional lighting on the R930 boom and cab is activated for low-light conditions. | No action needed; turn off when not required to save battery. | |
| Beacon / Rotating Light | GREEN | When green, the rotating beacon on the R930 is active, alerting surrounding personnel that the machine is operational. | Ensure the beacon is on when the excavator is in use for visibility. | |
| Service / Hour Meter | AMBER | This amber indicator on the R930 reminds that scheduled maintenance (e.g., oil change or filter replacement) is due based on engine hours. | Perform the required service as per the Liebherr maintenance schedule. | |
| Overload / Capacity | RED | A red overload light on the R930 warns that the load on the bucket or lifting capacity is exceeded, risking structural damage or tip-over. | Immediately reduce the load and reposition the machine if unstable. | |
| Reduced Power (Limp Mode) | AMBER | When amber, the R930's engine power is limited to protect components, often due to high temperature or emission system faults. | Reduce load and check the fault code; have the system inspected soon. |
21 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Master Warning (Stop)
Common causes
- Low engine oil pressure
- Coolant overheating
- Critical hydraulic system failure
What to do
On the R930, immediately shut down the engine using the emergency stop. Check the display for the specific cause and address it (e.g., add oil, let engine cool). Do not restart until the fault is resolved.
Engine Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Clogged oil filter
What to do
Stop the R930 engine and check the dipstick; if low, add recommended engine oil. If level is fine but warning persists, do not run the engine and contact a Liebherr service technician to inspect the oil pump.
Hydraulic Overheat
Common causes
- Extended heavy digging in hot conditions
- Low hydraulic oil level
- Blocked hydraulic oil cooler
What to do
Reduce workload and allow the R930 to idle with the hydraulic system in neutral. Check the hydraulic oil level and clean the cooler fins. If temperature remains high, inspect the cooling fan and hydraulic pump.
Coolant Overheating
Common causes
- Low coolant level
- Faulty thermostat
- Radiator blockage or fan belt failure
What to do
Stop the R930 and let the engine cool. Check coolant level and top up with the correct mixture. Inspect the radiator for debris and the fan belt tension; replace if necessary.
Overload Warning
Common causes
- Exceeding bucket or lift capacity
- Uneven load distribution
- Swinging while carrying heavy load
What to do
Immediately lower the load to a safe position and reposition the R930 on more stable ground. Use a smaller bucket or reduce material density. Recheck the load chart for the machine.
Frequently Asked Questions
Why does the master warning light come on when I start my R930 in cold weather?
During cold starts, the master warning may briefly illuminate if the glow plug circuit is active or if cold oil triggers a pressure delay. It should turn off after a few seconds. If it stays on, check for a real fault.
What does the swing lock light mean and when should I use it on my R930?
The swing lock light (green) indicates the upper structure is locked. Use the swing lock when traveling or transporting the excavator to prevent unintended rotation. Release it before digging.
Can I continue operating my R930 if the hydraulic oil warning light is amber?
You can operate with caution, but stop as soon as possible to check the hydraulic oil level and temperature. Ongoing use with low oil or high temp may cause pump damage.
How do I reset the service hour meter light on my R930?
The service light must be reset after scheduled maintenance. Use the Liebherr service menu on the display or consult your dealer; do not attempt to reset without performing the service.
What should I do if the water in fuel light comes on while I'm digging?
Stop the machine immediately and drain the water separator located on the fuel filter. If the light stays on, replace the fuel filter to avoid injector problems.
Why does my R930 show a reduced power light when the exhaust temperature is high?
The reduced power light may activate during a DPF regeneration to limit engine load and aid the cleaning process. Let the regeneration complete; if it occurs frequently, have the emission system inspected.