The Merlo P27.6 telehandler's instrument cluster provides essential status and warning information for safe operation. This aerial lift/work platform requires close attention to stability and hydraulic systems.
Merlo P27.6 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A serious fault that requires immediate stopping of the P27.6 telehandler. | Stop the engine and consult the operator's manual. | |
| Master Caution | AMBER | Indicates an active warning for the P27.6, such as low fluid levels or a auxiliary system fault. | Check the display for specific warnings and address accordingly. | |
| Check Engine (MIL) | AMBER | The engine management system has detected an emission-related or performance fault on the P27.6. | Contact service to diagnose the engine controller. | |
| Engine Oil Pressure | RED | Engine oil pressure is dangerously low, risking engine damage to the Merlo P27.6. | Stop engine immediately and check oil level. | |
| Battery / Charging | RED | The alternator is not charging the battery or battery voltage is low for the P27.6. | Check alternator belt and connections. | |
| Coolant Temperature | RED | Engine coolant has exceeded safe operating temperature in the P27.6. | Stop engine, allow cooldown, check coolant level. | |
| Brake System | RED | A fault in the service brake system of the P27.6, such as low brake fluid or worn pads. | Stop immediately and inspect brake system. | |
| Parking Brake | RED | The parking brake is engaged or a fault prevents release on the P27.6. | Release parking brake before moving. | |
| Glow Plug / Preheat | AMBER | The intake heater or glow plugs are active during cold start on the P27.6. | Wait until the light goes out before starting. | |
| Low Fuel | AMBER | Fuel level is low and the P27.6 may soon run out of diesel. | Refuel as soon as possible. | |
| High Beam | BLUE | The high beam headlights are turned on for better visibility on the P27.6. | No action needed; dim when approaching other vehicles. | |
| Hydraulic System | RED | A critical hydraulic system fault is detected, such as low hydraulic oil or filter restriction on the P27.6. | Stop the machine and check hydraulic fluid level and filters. | |
| Fasten Seat Belt | RED | The operator is not wearing the seat belt while the P27.6 is in motion. | Fasten your seat belt immediately. | |
| Work Lights | GREEN | The auxiliary work lights are activated for night operation of the P27.6. | Use only when required. | |
| Beacon / Rotating Light | BLUE | The rotating beacon is on, signaling the P27.6 is active in the work area. | Ensure beacon is visible for safety. | |
| Differential Lock | AMBER | The differential lock is engaged on the P27.6 for better traction on soft ground. | Disengage on firm surfaces to avoid driveline damage. | |
| PTO Engaged | GREEN | The power take-off for auxiliary equipment is active on the P27.6. | Ensure any attached implement is safe before engaging. | |
| Overload / Capacity | RED | The P27.6 has exceeded its rated load capacity or tipping moment. | Reduce load immediately and re-evaluate lift. | |
| Hydraulic Oil | AMBER | The hydraulic oil temperature is high or level low on the P27.6. | Allow system to cool and check oil level. | |
| Water in Fuel | AMBER | Water has been detected in the diesel fuel system of the P27.6. | Drain the water separator and refill with clean fuel. | |
| Service / Hour Meter | AMBER | It is time for scheduled maintenance on the P27.6 based on engine hours. | Perform required service as per manual. |
21 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
- Radiator blockage
- Coolant fan failure
What to do
Stop the P27.6, let the engine cool, then check coolant level and clean the radiator fins of debris.
Hydraulic System Failure
Common causes
- Low hydraulic oil
- Filter clogging
- Pump failure
What to do
Do not operate the P27.6; check hydraulic oil level and replace filters; if still faulty, require service.
Brake System Fault
Common causes
- Low brake fluid
- Worn brake pads
- Leak in brake lines
What to do
Stop immediately; check brake fluid level and inspect lines for leaks; have the brakes serviced before reuse.
Overload Condition
Common causes
- Exceeding rated capacity
- Uneven load distribution
- Load shift
What to do
Immediately lower the load to a safe position and reduce the load or reposition for stability on the P27.6.
Engine Start Failure (Cold)
Common causes
- Low battery charge
- Glow plug malfunction
- Fuel system air
What to do
Jump-start if battery low; wait for glow plug cycle; prime fuel system by turning key to run for 10 seconds.
Frequently Asked Questions
Why does my P27.6 show a red Master Warning light but no other warnings?
The Master Warning may be triggered by an intermittent fault. Turn the ignition off and on; if it persists, check the display for hidden warnings or contact Merlo service.
The hydraulic oil warning light is on, but the level looks fine. What else could it be?
The light may indicate high oil temperature. Let the P27.6 idle with the boom lowered to cool the oil, then check hydraulic oil filters for restriction.
Can I operate the telehandler with the amber Check Engine light on?
Yes, but the engine may be in derated mode, reducing power. Complete the task if safe, then have the P27.6 diagnosed by a dealer to prevent damage.
The parking brake light stays on even when released. How do I fix this?
This indicates a fault in the brake release circuit. Try cycling the switch; if it stays on, check the brake fluid level and parking brake switch for debris.
Why does the glow plug light flash when starting the P27.6 in warm weather?
The glow plug system may still preheat for emissions reasons. Wait for the light to go out (usually a few seconds) before cranking the engine.
The overload light came on while lifting a load within capacity. What happened?
The P27.6's load chart accounts for outreach and terrain. The load may be within capacity but positioned too far forward; retract the boom and lower to reset.