Alpha Power Cleaners Logo

Tennant M20 & T20 Fault Codes Guide

Alpha Power Cleaners are Tennant-authorised partners across the East Midlands. We supply a range of Tennant cleaning machines for hire, including floor scrubber dryers and floor sweepers.

We are proud to provide same day or next day repairs and servicing across a wide range of commercial cleaning machines. If you have a problem, give us a call on 0808 169 8529  today.

In this guide we are going to look at fault codes for the Tennant M20 Scrubber Sweeper and the Tennant T20 Scrubber Dryer.

Repairs & Servicing

In addition to supplying a range of Tennant products across the region, we also fix any problem with your unit through our specialist repair and maintenance packages.

If you’ve noticed an issue with your commercial cleaning machine — don’t worry. Our team can identify and fix any issues using the fault code as guidance. Fault codes are a series of numbers and letters that indicate the type of fault that has occurred in your unit.

To find out why your Tennant M20 or Tennant T20 is malfunctioning, check out the full list of fault codes below, along with the causes and remedies.

Tennant M20 & T20 Fault Codes

Due to the similarities between the M20 and T20, the fault codes are the same on each machine.

Fault Code Causes Remedy
0x0010 Parking brake engaged Release parking brake
0x0701 ECH2O system plugged with impurities Flush ec−H2O system
0x0781 Detergent tank is empty Fill detergent tank
0x0790 Solution tank is empty Fill solution tank
0x0791 Recovery tank is full Empty recovery tank
0x07A0 Hydraulic filter clogged Shut off machine. Contact our team for help
0x07A1 Fire in the hopper Shut off machine Extinguish fire If necessary, call emergency personnel
0x07A2 Hopper not completely lowered Lower hopper completely
0x07A3 Filter shaker is clogged Remove and clean / or replace hopper filter
0x07A4 Operator not in seat while engine is running Operator must be in operator seat for machine to function
0x07B0 Engine overheating Add coolant to coolant system
0x07B1 Hydraulic fluid temperature is high Shut off machine. Contact our team for help
0x07B2 Engine malfunction Shut off machine. Contact our team for help
0x07B3 Fuel tank near empty Fill fuel tank (gasoline). Replace fuel tank (LPG)
0x07B4 Oil level possibly low Add engine oil as needed
0x07B5 Inadequate voltage supply to engine Shut off machine. Contact our team for help


These remedies can be attempted yourself, though we recommend using an authorised Tennant partner to service the unit. For any fault codes not shown in this table, you can contact our team for support.

Tennant M20 Scrubber Sweeper

The Tennant M20 is a lpg/diesel-powered ride-on combination floor sweeper and scrubber dryer that provides consistent, high-quality cleaning results in even the harshest commercial environments. It can be used on concrete, hard floors and even roads/tarmac. It is the ideal combination unit for warehouses, construction sites and other large commercial areas.

Tennant M20 (LPG / Diesel) Ride on Combination Floor Scrubber Drier

If you want a quote to hire the Tennant M20, give us a call on 0808 169 8529 today.

See the M20 product page for a full description and technical details.

Tennant T20 Scrubber Dryer

Also among our range is the Tennant T20, an lpg/diesel-powered ride-on scrubber dryer capable of cleaning and drying large areas both indoors and outdoors. It has an exceptional scrubbing and water recovery system that provides consistent, heavy-duty cleaning results. It is a popular choice for warehouses, construction sites and other large commercial areas.

Tennant T20 (LPG/Diesel) Ride-on Scrubber Dryer

If you want a quote to hire the Tennant T20, give us a call on 0808 169 8529 today.

See the T20 product page for a full description and technical details.


Alpha Power Cleaners provides servicing and repairs for damage, problems, faults and issues.  Our maintenance team will ensure your unit returns to working order, so that you can keep your business clean, healthy and safe.

In some cases, we can repair you machine on-site.

We serve customers across the West and East Midlands, including Nottingham, Derby and Loughborough, and the South. Contact our team today for maintenance, repairs and machine hire.

Why choose us

80+ Years of Experience

From hot pressure washers to floor scrubber dryers - we know our cleaning equipment, and can help you make the right decision.

Free Site Surveys & Quotations

Our team offer free site surveys and quotes for all our machines. If you are not too sure what you need, or even if you don't know how to clean the area in question, we can help!

Fully Guaranteed Work

All our work is fully guaranteed, we maintain all our machines to the highest standard and ensure that every machine we hire out is fit for purpose.

Same Day or Next Day Delivery

We cover the Midlands and beyond, we are proud to say that we offer next day, or same day delivery across most of our machines for hire.

Karcher Premier Servicing Dealer

Being a Karcher premier servicing dealer, we have access to the latest machines and equipment. This also means that we are experts in everything Karcher.

Tennant Authorised Partners

We are now Tennant Authorised Partners across the East Midlands, this means we have access to the latest machines and parts.

Free Training

We provide free training for all our hire machines. No matter if you have never used one, we will show you how to use it and set it up on-site - so you are ready to go!

Fast Breakdown Repair & Servicing

If you have a machine with us, or one of your own - we provide breakdown repair and servicing across the Midlands. Need help? Contact one of our team today!

Flexible Hire Options

If you need a machine for one day, one week, or one month, we can sort out what is best for you. With several options for hire contracts, we have something suitable for everyone.

Our work process


Contact our team

Contact us to speak to one of our team, and tell us what you need. We have something for every situation, our team are experts and can tell you exactly what will work best.


Get valuable advice

We will advise what machine is best for you and your situation, taking into account the size and type. Then we can give you a quote over the phone.


Confirm your order

Confirm what day you would like your machine to be delivered, and your location - delivery is free of charge and we cover across the Midlands.



On the day we deliver your machine, we will ensure you are happy and we can then provide training for you, so you are confident using the machine.

Free Site Surveys & Quotes
Repairs & Servicing
Same or Next Day Delivery
Delivery Across The UK
Fully Guaranteed Work
Free Training & Setup

How can we help?

Need a callback? No problem!
Health and Safety SafeContractor Approved ISO 9001 Certified Hire trade alliance

This website uses cookies to enhance your browsing experience...

More information I understand