Start by locating your Tennant scrubber’s model and serial number, then use the operator manual that matches that exact machine and its installed options. For common problems, check operator-maintainable items first: battery charge and connections, tanks, solution flow, hoses, filters, squeegee blades, and brushes. Leave electrical, control-board, motor, and persistent option-system faults to Tennant service.
Manuals differ by model and production range. Tennant’s T300 documentation page, for example, provides a troubleshooting guide and operator manual; use the documentation for your own machine rather than applying another model’s instructions.
Before troubleshooting: identify the machine and work safely
- Find the model and serial number. Use them to select the manual applicable to your machine and production range.
- Confirm installed options. Systems such as ES, FaST, and ec-H2O have separate troubleshooting steps; follow them only if that system is installed on your scrubber.
- Stay within operator maintenance. Clean or inspect only the accessible items the manual identifies as operator tasks. Do not open electrical enclosures, bypass interlocks, or attempt repairs assigned to trained personnel.
- Stop if a fault persists. Contact Tennant service for damaged wiring, control-board or electrical faults, persistent motor problems, recurring warning indicators, or any repair the manual assigns to service personnel.
Tennant’s T2 operator manual states: “Electrical Hazard. Disconnect Battery Cables Before Servicing Machine.” This warning is for servicing the machine; follow the safety and isolation procedure in the manual for the exact unit.
Why won’t my Tennant floor scrubber start?
- Check whether the batteries are discharged and whether battery cables are visibly loose, using only the inspection steps allowed by the manual.
- If the machine has an emergency stop, check whether it is activated and follow the manual’s reset instructions.
- If the machine still will not operate, stop at the operator checks. Tennant troubleshooting tables identify machine faults and, depending on model, faulty batteries, key switches, control boards, motors, or wiring. Some of these are service-only faults.
Do not attempt to bypass an interlock or diagnose internal wiring. The T2 and T12 manuals route certain key-switch, motor, wiring, and control-board problems to a service center or Tennant service.
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#1 Best Overall
- Efficient Cleaning Coverage: 22" cleaning width and 31.5" squeegee suction width for comprehensive floor coverage in a single pass, clean up to 32,000 square feet per hour.
- Versatile Floor Compatibility: Ideal for a variety of hard floors, including concrete, tile, marble, epoxy, PVC, emery, terrazzo, and sealed hardwood floors.
- Ample Tank Capacity: Equipped with a 15.9-gallon solution tank and a 18.5-gallon sewage tank, it efficiently manages water during the cleaning process. The rotationally molded polyethylene housing is resistant to corrosion and impact, while the anti-collision design enhances maneuverability of the floor scrubber.
- Our advantages: The water tank is larger, the efficiency is higher. We use brushless motors, which have a longer service life, almost no noise, and a higher rotational speed than others.
- Customer Experience: If you have any project or technical problems, please feel free to leave us a message, we provide 7X24 hours customer service. And we offer a two-year warranty.
Why is my Tennant scrubber leaving water behind?
Poor pickup can result from a full recovery tank or a problem with the squeegee, vacuum hose, tank cover, seals, or inlet filter. Check these in order, using your model’s manual for the exact arrangement and permitted cleaning steps.
- Check the recovery tank. Drain it if full, and make sure the cover is seated correctly.
- Check the drain hose and seals. Confirm the hose cap and applicable seals are in place and secure.
- Inspect the squeegee. Remove debris using the manual’s operator procedure. Check blades for wear or damage; rotate or replace them only as directed.
- Inspect the vacuum hose. Look for a clog, loose connection, or damaged hose. Secure loose connections and clear only accessible obstructions the manual identifies.
- Check the vacuum-fan inlet filter. Clean it if the manual lists this as an operator task.
- Check battery charge. Low charge is also listed among possible causes of poor pickup on some machines.
For example, Tennant’s T12 troubleshooting table lists draining a full recovery tank, cleaning the squeegee and hose, securing loose connections, cleaning the inlet filter, and rotating or replacing worn blades. That guidance is specific to the T12; check the manual for your model before applying it.
Why won’t the vacuum fan turn on?
On the T12, a full recovery tank or foam in the tank can prevent the vacuum fan from operating. Drain the tank if needed. If foam is present, follow Tennant’s instructions for the machine and cleaning application on detergent choice or defoamer use. Do not assume the cause or remedy is identical on other models; check the applicable manual for additional fault indicators and service instructions.
Rank #2
- 22” Cleaning Width for Maximum Coverage – The wide scrubbing path ensures efficient cleaning, covering large areas in less time. Perfect for warehouses, malls, hospitals, and industrial spaces.
- High Cleaning Efficiency – 48,400 sq. ft/hour – This ride-on floor scrubber cleans up to 48,400 square feet per hour, making it an excellent choice for commercial and industrial use.
- Long-Lasting Battery Life – 3-4 Hours of Continuous Use – Designed for extended cleaning sessions, this machine provides 3-4 hours of runtime per full charge, keeping operations smooth and uninterrupted.
- Fast & Reliable Charging – 7-8 Hours Charge Time – The powerful battery system fully charges in 7-8 hours, ensuring your scrubber is ready for the next cleaning shift.
- Large Capacity Dual-Tank System – Featuring an 18.5-gallon clean water tank and a 19.8-gallon dust recovery tank, reducing the need for frequent refills and maximizing cleaning efficiency.
Why is no solution coming out of my floor scrubber?
- Check the solution tank level. Refill it if needed, following the manual’s instructions for the cleaning solution.
- Confirm solution flow is switched on and set as intended. Controls and labels vary by model.
- Look for an accessible blockage. Tennant’s T2 and T12 troubleshooting tables list clogged filters or supply lines among possible causes. Clean only the parts identified for operator maintenance.
- Escalate valve, solenoid, or pump faults. A clogged or stuck valve or solenoid may require service; do not disassemble these components unless the manual explicitly authorizes the work.
A tank filter or solution hose may be operator-maintainable on one model and arranged differently on another. Use the exact manual to identify the correct part and safe cleaning method.
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- Inspect brushes or pads. Remove debris and check for wear; replace consumables when the manual indicates they are worn.
- Confirm the consumable suits the task. Use a brush or pad and detergent appropriate for the floor and cleaning application, following Tennant’s guidance.
- Check brush pressure and scrub-head leveling. Adjust these only if the manual provides an operator procedure.
- Check for model-specific issues. The T12 manual also lists a full debris trough and broken drive belts on a cylindrical scrub head as possible causes.
- Check battery charge. Low charge can reduce cleaning performance.
Why does the battery run out so quickly?
Short runtime can result from batteries that are not fully charged, defective or due for maintenance, or a faulty charger. Tennant lists these causes in its T2 and T12 troubleshooting tables. Battery chemistry and maintenance requirements vary, so follow the instructions for the installed batteries and charger rather than applying a generic maintenance routine.
Contact qualified service for battery faults, damaged cables, or charger repairs. Do not continue using equipment with damaged electrical components.
Rank #3
- High-Speed Roller Brush: Ten times higher contact pressure than manual cleaning. The roller brush also cleans structured surfaces and joints and assists forward movement for easy cleaning.
- Fast Drying Floors: The soft rubber squeegees remove moisture - backwards and forwards. Floors dry very quickly, and for intensive cleaning, the suction can be switched off via the foot pedal.
- Easy Operation: Vacuum can be switched off via foot pedal, while detergent can be applied and then vacuumed for deeper cleaning
- Removable Tanks: The fresh water tank can be removed and filled in small sinks, and the dirty water tank can be removed separately and emptied. Tanks can be removed separately or together. Includes a handle for easy transportation
What do Tennant option-system warning lights mean?
Warning lights are not universal across Tennant scrubbers. Check the manual for the specific model and installed option, and use its stated procedure rather than interpreting an indicator by color alone.
- T12 ec-H2O: The T12 manual associates a blinking red warning/fault indicator with possible mineral buildup and points to a module-flush procedure. It associates a solid red indicator with a clogged module or defective solution pump and calls for service. Follow the T12 procedure only on the applicable machine.
- T16 ES, FaST, and ec-H2O: The T16 manual has separate troubleshooting for these systems. Use the section for the option installed on your machine; its directions should not be generalized to other models.
If the warning recurs after the manual’s permitted operator procedure, contact Tennant service.
When should you replace a squeegee blade or call for service?
If inspection shows a worn or damaged blade and the manual directs replacement, select a blade by exact model and serial applicability, blade type, and dimensions. Tennant’s manuals support rotating or replacing worn blades as a pickup remedy, but they do not establish one universal blade for all machines. Tennant’s T20 product and parts page lists blades for that model; verify fit before ordering.
Rank #4
- 17" Scrub, Buff & Polish Performance: Designed for scrubbing, washing, buffing, polishing, and drying hard floors in one pass. The 17" brush path and 22" squeegee width make it a strong fit for tile, concrete, vinyl, epoxy, terrazzo, sealed wood, and other hard floors.
- Commercial Capacity & Machine Size: Features a 7.9-gal solution tank, 9.2-gal recovery tank, 200 RPM brush speed, and working efficiency up to 19,000 sq ft/h. Compact walk-behind design is better suited for small-to-medium commercial spaces.
- Battery Operation & Use Considerations: Battery-powered operation provides cordless mobility with up to 2.5 hours runtime. For best results, use low-foam floor scrubber detergent, empty and rinse the recovery tank after use, and clean the squeegee blades regularly.
- Commercial Use, Skill Level & Origin: Built for trained adult commercial operators in schools, retail stores, hospitals, gyms, warehouses, workshops, and facility maintenance. Age rating: not for children; adult operation only. Skill level: beginner-friendly with training. Country of origin: China
- Complete Commercial Floor Care Set Included: Includes the RT35 walk-behind floor scrubber, heavy-duty brush, pad holder, floor pads, squeegee assembly, battery, charger, and user manual for routine commercial floor cleaning, scrubbing, buffing, and polishing.
Call Tennant service instead of continuing DIY troubleshooting for electrical or control-board faults, damaged wiring, persistent motor faults, unresolved valve or pump problems, or any procedure assigned to trained personnel in the manual.
Which manual should you use?
Use the manual that matches the machine’s model, serial range, region, and installed options. Tennant’s T2 operator manual is dated 2008; the T12 and T16 troubleshooting material reflects earlier revisions (2013-era and 2011-era content, respectively). These manuals illustrate common fault patterns, but they are not substitutes for instructions applicable to a specific machine.
For a T300, Tennant provides a basic troubleshooting guide and operator manual on its official T300 documentation page. For other models, start with Tennant’s documentation for that unit and contact Tennant service if the correct instructions or fault remedy are unclear.
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