The Hyster H100FT is a heavy-duty forklift designed for demanding industrial applications, featuring a robust instrument cluster to monitor key systems. Its dashboard provides clear visual alerts to help operators maintain safe and efficient operation. Understanding these indicators is essential for maximizing uptime and minimizing costly repairs.
Hyster H100FT Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A major fault has been detected in the H100FT, such as severe engine or hydraulic failure. | Safely stop the forklift as soon as possible and investigate the fault displayed on the cluster. | |
| Master Caution | AMBER | A non-critical warning has been triggered, such as a minor sensor issue or maintenance reminder. | Review the display for further information and schedule service if necessary. | |
| Check Engine (MIL) | AMBER | The H100FT’s engine control system has detected an abnormal condition affecting emissions or performance. | Arrange for diagnostic service soon to prevent further engine issues. | |
| Engine Oil Pressure | RED | Engine oil pressure has dropped below safe operating levels in the H100FT. | Shut down the engine immediately and check oil level and for leaks. | |
| Battery / Charging | RED | The alternator is not charging the battery, risking electrical failure. | Inspect the charging system and battery connections before resuming operation. | |
| Coolant Temperature | RED | The engine coolant temperature has exceeded the maximum safe range. | Stop the forklift, allow it to cool, and check coolant level and radiator. | |
| Transmission Temp | RED | Transmission fluid temperature is too high, risking damage to the H100FT’s transmission. | Pause operation to let the transmission cool and inspect fluid levels. | |
| Brake System | RED | A serious fault has been detected in the H100FT’s brake system. | Do not operate the forklift until the brake system is inspected and repaired. | |
| ABS | AMBER | The anti-lock braking system has a malfunction, reducing stability during braking. | Drive with caution and schedule ABS service. | |
| Parking Brake | RED | The parking brake is engaged or not fully released. | Release the parking brake before moving the forklift. | |
| Seat Belt | AMBER | The operator’s seat belt is not fastened while the H100FT is in use. | Secure the seat belt before operating the forklift. | |
| DPF / Regeneration | AMBER | The diesel particulate filter requires regeneration to maintain emissions compliance. | Initiate or allow automatic regeneration as instructed in the operator manual. | |
| DEF / AdBlue | AMBER | The DEF fluid level is low, which can limit engine power if ignored. | Refill the DEF tank to avoid engine derate. | |
| Water in Fuel | AMBER | Water contamination has been detected in the fuel system. | Drain the water separator to protect injectors and fuel pump. | |
| Low Fuel | AMBER | The fuel tank is nearing empty on the H100FT. | Refuel soon to prevent engine stalling. | |
| High Beam | BLUE | The high beam work lights are switched on. | Switch off high beams if not needed to avoid glare. | |
| Hydraulic System | AMBER | A hydraulic fault has been detected, possibly affecting lifting or steering. | Check hydraulic fluid level and inspect for leaks. | |
| Reduced Power (Limp Mode) | AMBER | The H100FT has entered limp mode due to a detected fault, limiting performance. | Service the forklift promptly to restore full power. | |
| Hydraulic Oil | AMBER | Hydraulic oil level or pressure is outside the recommended range. | Top up hydraulic oil and check for system leaks. | |
| Engine Oil Temperature | RED | Engine oil temperature has risen above safe limits. | Stop the engine and investigate for cooling or lubrication issues. | |
| Air Filter | AMBER | The air filter is clogged, reducing engine efficiency. | Inspect and replace the air filter to maintain performance. | |
| Fuel Filter / Water Separator | AMBER | The fuel filter is restricted or water has accumulated in the separator. | Service or replace the fuel filter and drain water as needed. | |
| Service / Hour Meter | AMBER | Scheduled maintenance interval has been reached based on engine hours. | Perform the required service as indicated in the maintenance schedule. | |
| Work Lights | GREEN | The work lights are currently turned on for better visibility. | Switch off when not required to conserve battery. | |
| Beacon / Rotating Light | AMBER | The safety beacon is active, alerting others to forklift operation. | Ensure the beacon is functioning in high-traffic areas. | |
| Overload / Capacity | RED | The load exceeds the rated lifting capacity of the H100FT. | Lower the load immediately to prevent tip-over or equipment damage. | |
| Low Oil Level | AMBER | Engine oil level is below the minimum mark. | Add engine oil to the recommended level before continuing. | |
| Brake Fluid Level | AMBER | Brake fluid reservoir is low, risking reduced braking performance. | Inspect for leaks and refill brake fluid as needed. | |
| High Exhaust Temp (HEST) | AMBER | Exhaust temperature is elevated, usually during DPF regeneration. | Avoid parking near flammable materials during regeneration. |
29 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Oil Pressure
Common causes
- Oil level too low
- Oil pump failure
- Blocked oil filter
What to do
Immediately stop the H100FT, check the oil level, and inspect for leaks. If the warning persists, have a technician check the oil pump and filter.
Coolant Temperature
Common causes
- Low coolant level
- Radiator blockage
- Thermostat stuck closed
What to do
Shut down the forklift, allow it to cool, and inspect coolant level and radiator. Clean or replace components as needed before restarting.
Brake System
Common causes
- Hydraulic leak
- Worn brake pads
- Master cylinder failure
What to do
Do not operate the H100FT; inspect the brake system for leaks, check pad thickness, and ensure the master cylinder is functioning properly.
Overload / Capacity
Common causes
- Attempting to lift excessive weight
- Incorrect load positioning
- Load center too far forward
What to do
Lower the load to the ground, verify the weight and position are within H100FT’s rated limits, and adjust before lifting again.
Battery / Charging
Common causes
- Alternator failure
- Loose or corroded battery terminals
- Drive belt broken
What to do
Inspect the alternator, tighten or clean battery connections, and check the drive belt for wear or breakage on the H100FT.
Frequently Asked Questions
What does it mean if the DPF / Regeneration light stays on?
It indicates the DPF needs regeneration; follow the operator manual to start a parked regen or contact service if the light does not clear.
Can I drive the H100FT if the ABS light is on?
You can operate the forklift, but braking stability may be reduced, especially on slippery surfaces; schedule repairs soon.
Why is the hydraulic oil light on after a cold start?
Hydraulic oil may be cold or at a low level; let the forklift warm up and check the fluid level if the warning persists.
What should I do if the master warning (stop) light comes on?
Stop the H100FT immediately, check the display for details, and do not resume operation until the fault is resolved.
How often should I service the air and fuel filters?
Follow the maintenance schedule in the H100FT manual, but inspect filters more frequently in dusty or dirty environments.