Haulotte HA26 RTJ PRO: Boom will not raise or extend

Likely cause: Discharged battery, an active fault code, basket overload or a fault of the boom angle or length sensor. Diagnosis: Check the power supply, read the fault code and verify the load in the basket.

Haulotte HA26 RTJ PRO: Machine will not drive, or drives only at creep speed

Likely cause: Joystick out of range or not centred, an open footswitch, or the drive limitation that is active while the boom is raised. Diagnosis: Centre the joystick, check the footswitch and lower the boom to the stowed (transport) position.

Haulotte HA26 RTJ PRO: Tilt alarm

Likely cause: Working on a slope, or a damaged or uncalibrated tilt sensor. Diagnosis: Level the machine; calibration or replacement of the sensor at a service centre.

Haulotte HA26 RTJ PRO: Basket overload (overload / load sense)

Likely cause: Capacity exceeded or a basket load sensor out of calibration. Diagnosis: Reduce the load; calibration of the weighing system at a service centre.

Haulotte HA26 RTJ PRO: Boom sagging or descending slowly

Likely cause: Worn cylinder seals, a holding valve fault or air in the system; moisture can make valves stick. Diagnosis: Inspect the cylinders, valves and hydraulic oil; repair at a service centre.

Haulotte HA26 RTJ PRO: Loss of CAN communication between modules

Likely cause: Chafed bus cable, corroded connectors or a damaged module (basket, chassis, power module). Diagnosis: Check the bus and the connectors and read the fault code with a service analyser.

Haulotte HA26 RTJ PRO: Combustion engine: will not start, stalls, overheats

Likely cause: Glow plugs or relay, throttle position sensor (TPS), temperature and oil pressure sensors, fuel system. Diagnosis: Read the engine codes and check the sensors and wiring.

Haulotte HA26 RTJ PRO: Basket will not come down

Likely cause: No power to the lowering valves or an electrical fault. Diagnosis: Use the emergency lowering (the valve on the chassis), then have the electrics diagnosed at a service centre.

Faults and error codes · boom lift

Haulotte HA26 RTJ PRO service: faults and error codes

The most common faults of the Haulotte HA26 RTJ PRO (boom lift) with the likely cause and the way to diagnose them, and below the Haulotte error codes with explanations. RK Rental services the Haulotte HA26 RTJ PRO: repairs, maintenance inspections and preparation for UDT inspections (UDT is the Polish Office of Technical Inspection), parts and service life assessment.

Haulotte HA26 RTJ PRO: machine data

Type: boom lift
Working height: 26.4 m
Platform capacity: 250 kg
Drive: Diesel
Error codes in the database: 76

HA26 RTJ PRO machine card →HA26 RTJ PRO manuals and parts catalogue →Haulotte parts →

The information below is diagnostic and indicative. Repairs, calibrations and clearing of fault codes are carried out by a qualified service technician, according to the manual for the specific serial number of the machine. A machine with an active fault code must not be used until the cause has been removed.

Haulotte HA26 RTJ PRO technical data useful for service

Weight and dimensions decide how the machine is transported to a workshop, while the tyres, battery and drive decide which parts are needed. When you report a service job, please also give the serial number from the rating plate.

Platform height: 24.4 m
Outreach: 17.5 m
Machine weight: 15,500 kg
Platform dimensions: 0.91 × 2.44 m
Transport dimensions (L × W × H): 9.4 × 2.48 × 2.98 m
Drive: 4WD
Tyres: Rough terrain
Use: Outdoor
Number of persons: 2
Wheelbase: 0.76 m
Ground Clearance: 48 cm

Most common Haulotte HA26 RTJ PRO faults

Boom will not raise or extend

Likely cause: Discharged battery, an active fault code, basket overload or a fault of the boom angle or length sensor.
Diagnosis / how to fix it: Check the power supply, read the fault code and verify the load in the basket.

Machine will not drive, or drives only at creep speed

Likely cause: Joystick out of range or not centred, an open footswitch, or the drive limitation that is active while the boom is raised.
Diagnosis / how to fix it: Centre the joystick, check the footswitch and lower the boom to the stowed (transport) position.

Tilt alarm

Likely cause: Working on a slope, or a damaged or uncalibrated tilt sensor.
Diagnosis / how to fix it: Level the machine; calibration or replacement of the sensor at a service centre.

Basket overload (overload / load sense)

Likely cause: Capacity exceeded or a basket load sensor out of calibration.
Diagnosis / how to fix it: Reduce the load; calibration of the weighing system at a service centre.

Boom sagging or descending slowly

Likely cause: Worn cylinder seals, a holding valve fault or air in the system; moisture can make valves stick.
Diagnosis / how to fix it: Inspect the cylinders, valves and hydraulic oil; repair at a service centre.

Loss of CAN communication between modules

Likely cause: Chafed bus cable, corroded connectors or a damaged module (basket, chassis, power module).
Diagnosis / how to fix it: Check the bus and the connectors and read the fault code with a service analyser.

Combustion engine: will not start, stalls, overheats

Likely cause: Glow plugs or relay, throttle position sensor (TPS), temperature and oil pressure sensors, fuel system.
Diagnosis / how to fix it: Read the engine codes and check the sensors and wiring.

Basket will not come down

Likely cause: No power to the lowering valves or an electrical fault.
Diagnosis / how to fix it: Use the emergency lowering (the valve on the chassis), then have the electrics diagnosed at a service centre.

Haulotte HA26 RTJ PRO error codes: 76 codes explained

Newer Haulotte machines (HA/HT series on a CANbus) use codes in the format Fxx.yy shown on the lower control box display (Activ'Screen); the letter next to the code is the fault type: A = active, D = detected. Older electric scissor lifts (Compact, Optimum) have a ZAPI controller and AL/EP codes.

Below you see the code and the original manufacturer's message. Open a code for the likely cause, what you can check yourself and when to call service.

Source: Haulotte Maintenance Book HA26 RTJ (4001055180), fault codes chapter.

All Haulotte codes of this control system: list and search →

Do you have a fault or an error code on your Haulotte HA26 RTJ PRO?

Our service team will read the code, diagnose the cause and remove the fault, at our workshop or on site at the customer's premises (construction site, hall, warehouse), with original or OEM-grade replacement parts.

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Contact

The fastest way is by phone: service +48 609 609 105 (also WhatsApp), or write to serwis@fajnepodnosniki.pl.

Phone (service):: +48 609 609 105
E-mail:: serwis@fajnepodnosniki.pl
WhatsApp:: +48 609 609 105
Base and office:: ul. Brzozowa 12, 86-061 Brzoza near Bydgoszcz, Poland
Office hours:: Monday to Friday, 7:30–15:30 (Polish time)
Response time:: Messages: a reply within 1–2 hours.