The Magni RTH 5.21 telehandler's instrument cluster provides essential feedback for safe operation, including engine, hydraulic, and load status indicators. Designed for aerial lift applications, it emphasizes stability and load management warnings.
Magni RTH 5.21 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | This red stop light signals a critical fault that requires immediate engine shutdown, such as a severe hydraulic or engine issue on the Magni RTH 5.21. | Stop the machine safely and consult the fault code display before restarting. | |
| Master Caution | AMBER | Amber caution light indicates a non-critical fault that should be addressed soon, like a sensor error or maintenance reminder for the RTH 5.21. | Check the display for specific warnings and schedule service as needed. | |
| Check Engine (MIL) | AMBER | When illuminated, the engine control unit has detected a fault in the diesel engine of the RTH 5.21, potentially affecting emissions or performance. | Reduce load and have the engine diagnosed by a qualified technician. | |
| Engine Oil Pressure | RED | Low oil pressure in the RTH 5.21's engine can cause severe damage; this light indicates pressure has dropped below safe levels. | Shut down the engine immediately and check oil level and pressure sender. | |
| Battery / Charging | RED | This red light shows the alternator is not charging the battery in the RTH 5.21, often due to a failed alternator or broken belt. | Stop the engine and inspect the charging system before continuing operation. | |
| Coolant Temperature | RED | Engine coolant temperature has exceeded safe limits in the RTH 5.21, risking overheating and possible engine failure. | Idle the engine to cool down, check coolant level, and inspect for leaks or clogged radiator. | |
| Brake System | RED | A fault in the hydraulic or service brake system of the RTH 5.21 has been detected, potentially reducing braking performance. | Stop the telehandler immediately and inspect brake fluid level and lines. | |
| Parking Brake | AMBER | The parking brake is engaged; on the RTH 5.21, this light may also indicate low brake pressure if flashing. | Release the parking brake before moving, or if flashing, check brake system pressure. | |
| Seat Belt | AMBER | The operator's seat belt is not fastened; the Magni RTH 5.21 will disable boom functions until fastened. | Fasten your seat belt to enable full machine operation. | |
| Glow Plug / Preheat | AMBER | This indicator lights when the engine preheat is active; on the RTH 5.21, it typically extinguishes after a few seconds in cold conditions. | Wait for the light to go out before starting the engine. | |
| Low Fuel | AMBER | The diesel level in the RTH 5.21's tank is low, providing approximately 30 minutes of runtime remaining. | Refuel as soon as possible to avoid engine stalling. | |
| High Beam | BLUE | The high beam headlights are active on the RTH 5.21, enhancing visibility in dark or dusty conditions. | Dim when approaching other operators or vehicles. | |
| Hydraulic System | RED | A critical hydraulic system fault has occurred in the RTH 5.21, such as low oil level or high temperature, affecting all boom functions. | Stop machine immediately, check hydraulic oil level and temperature. | |
| Overload / Capacity | RED | The RTH 5.21 has detected a load exceeding its rated capacity; continued operation may cause tipping or structural damage. | Reduce the load immediately and recheck stability before proceeding. | |
| Hydraulic Oil | AMBER | Hydraulic oil level is low or temperature is high in the RTH 5.21, which can degrade system performance. | Check hydraulic oil level and allow system to cool if hot. | |
| Air Filter | AMBER | The engine air filter on the RTH 5.21 is clogged or requires service, reducing engine power and fuel efficiency. | Replace the air filter per maintenance schedule. | |
| Fuel Filter / Water Separator | AMBER | Water has accumulated in the fuel filter/water separator of the RTH 5.21; drainage is needed to prevent fuel system damage. | Drain the water separator or replace the fuel filter. | |
| Service / Hour Meter | AMBER | The RTH 5.21 has reached a scheduled service interval; maintenance is due to ensure reliability. | Perform the required service as indicated in the operator's manual. | |
| Work Lights | GREEN | The work lights are turned on for enhanced visibility during nighttime or low-light operations on the RTH 5.21. | Use as needed; turn off when not required to conserve battery. | |
| Beacon / Rotating Light | GREEN | The rotating beacon is active, indicating the RTH 5.21 is operating and alerting nearby personnel. | Ensure beacon is visible and functioning before moving. | |
| Swing / Slew Lock | AMBER | The swing lock is engaged on the RTH 5.21, preventing the boom from rotating; release it before slewing. | Unlock the swing lock when ready to rotate the boom. | |
| Differential Lock | AMBER | The differential lock is engaged to improve traction on soft ground; on the RTH 5.21, it should be disengaged on hard surfaces. | Disengage differential lock when not needed to avoid driveline binding. | |
| Mast / Lift Limit | AMBER | The RTH 5.21's boom has reached its maximum lift or extension limit; further movement is inhibited to prevent damage. | Retract or lower the boom to restore normal function. | |
| Low Oil Level | AMBER | Engine oil level is low in the RTH 5.21; continued operation could lead to oil starvation and engine damage. | Stop the engine and add oil to the proper level. |
24 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheating
Common causes
- Low coolant level
- Clogged radiator fins
- Defective cooling fan
What to do
Stop the Magni RTH 5.21 immediately and allow the engine to cool. Check coolant level and add if low; clean radiator fins from debris. If the fan is not spinning, have it repaired by a certified technician.
Hydraulic System Failure
Common causes
- Low hydraulic oil
- Hydraulic oil overheating
- Damaged hydraulic pump
What to do
Park the RTH 5.21 on level ground and shut down the engine. Check hydraulic oil level and top up with recommended fluid. If oil is hot, let it cool; inspect for leaks. If the pump is noisy or not working, contact Magni service.
Overload Condition
Common causes
- Exceeding rated load capacity
- Uneven load distribution
- Boom extended beyond safe zone
What to do
Immediately lower the load to the ground and retract the boom. Reduce the load weight or reposition within the rated capacity chart. The RTH 5.21's overload system will lock functions until corrected.
Brake System Malfunction
Common causes
- Low brake fluid level
- Air in brake lines
- Worn brake pads
What to do
Stop the telehandler safely and apply the parking brake. Check brake fluid reservoir and top up if low. Bleed air from the system if pedal feels spongy. Replace worn brake pads as per maintenance schedule.
Engine Oil Pressure Loss
Common causes
- Low engine oil level
- Oil pump failure
- Clogged oil filter
What to do
Shut down the engine of the RTH 5.21 immediately to prevent damage. Check oil level and add oil if low. If pressure remains low, do not restart; tow the machine to a service center for oil pump and filter inspection.
Frequently Asked Questions
What does the master warning light mean on the Magni RTH 5.21?
The master warning (stop) light indicates a critical fault requiring immediate engine shutdown, such as low oil pressure or hydraulic failure. Always refer to the on-board diagnostic code for specifics.
How do I reset the service interval light on the RTH 5.21?
After performing the required maintenance, the service light can be reset via the instrument cluster menu: navigate to 'Service' and select 'Reset' following the operator's manual instructions.
Why does the overload light come on even with a light load?
The overload system considers load weight and boom position. If the boom is fully extended, even a light load may trigger the warning. Check the capacity chart and retract the boom to reduce moment.
What should I do if the hydraulic oil temperature light flashes?
Flashing indicates high hydraulic oil temperature. Reduce engine speed and avoid heavy boom movements until the light turns off. If persistent, check oil level and cooler cleanliness.
Can I operate the RTH 5.21 with the seatbelt light on?
No, the seatbelt must be fastened to enable boom and drive functions. The machine will not move until the belt is buckled.
How often should I replace the fuel filter on the Magni RTH 5.21?
The fuel filter should be replaced every 500 hours or annually, whichever comes first. Additionally, drain the water separator daily in humid conditions.