Is this your Walrus Pump?

The Walrus TQ400 is an electronically controlled water booster pump commonly used to improve water pressure in domestic water supply systems.

It combines a pump, electronic controller and built-in pressure tank in one compact unit.

The pump starts automatically when water is required and stops when demand ends.

If your pump looks like the photograph above, check the manufacturer's label to confirm the model number. Similar-looking pumps include the Walrus TQ200 and TQ800, as well as newer variants.

If you're unsure which pump you have, send us a photograph of the pump and its identification label.

Common Walrus TQ400 Pump Problems

1. Pump Running Continuously

If your Walrus TQ400 continues running when all taps and showers are switched off, possible causes include a leak in the water system, a pressure-control problem or a fault with the pump's internal controls.

The cause should be identified before replacing the pump.

2. Water Pressure Dropping

Low or inconsistent water pressure can be caused by restrictions in the water supply, air entering the system, worn internal components or problems with pump operation.

We can assess whether the fault originates within the pump or elsewhere in the installation.

3. Pump Switching On and Off Frequently

Frequent starting and stopping, sometimes called short cycling, can indicate a small leak, a problem with the pressure tank or a control-related fault.

Repeated cycling should be investigated, as it can place unnecessary strain on the pump.

4. Pump Not Starting

A Walrus TQ400 that fails to start may have an electrical supply issue, an internal control fault or a problem with the water supply or operating conditions.

A proper assessment can establish whether the pump can be repaired.

5. Excessive Noise or Vibration

Unusual humming, rattling or vibration may indicate air in the system, mechanical wear or problems with the pump mounting and connected pipework.

6. Pump Stopping During Operation

A pump that stops unexpectedly may be responding to overheating, inadequate water supply or another protective condition.

If the pump repeatedly stops, becomes excessively hot or shows signs of electrical damage, switch it off safely and arrange an inspection.

Can a Walrus TQ400 Pump Be Repaired?

A faulty Walrus TQ400 does not automatically mean that you need a new pump.

Some faults may be repairable, depending on the condition of the pump and the availability of suitable replacement parts.

At Boosterpumps.ie, we investigate the cause of the problem before recommending the appropriate solution.

Where repair is practical and economical, we can discuss the available options.

If the pump has reached the end of its useful life, we can advise on a suitable replacement.

Walrus TQ400 Pump Replacement Dublin

If your Walrus TQ400 cannot be economically repaired, we can assess your existing installation and recommend a suitable replacement booster pump.

Replacing an older pump is not simply a matter of installing another model of similar size. The replacement must be suitable for the water supply, pipework, pressure requirements and household demand.

We consider:

• Existing water pressure and supply arrangements
• Household water demand and number of bathrooms
• Pipework sizes and connections
• Pump location and available space
• Noise and operating requirements
• Reliability and suitability of replacement models

Our priority is to recommend the right solution for your home, whether that means repairing the existing pump or replacing it.

Why Choose Boosterpumps.ie?

We specialise in domestic water pump repairs, servicing and replacement throughout Dublin.

Our services include:

• Specialist fault diagnosis for domestic booster pumps
• Repairs to Walrus and other leading pump brands
• Assessment of existing pumps before recommending replacement
• Advice on suitable replacement systems
• Mobile repair services throughout Dublin
• Free, no-obligation telephone advice
• One-year warranty on completed work, subject to applicable terms

Based in Terenure, Dublin 6, we provide Dublin-wide coverage with emergency telephone availability, including evenings and weekends.

Frequently Asked Questions About Walrus TQ400 Pumps

Why does my Walrus TQ400 keep running?

A pump that continues running without water being used may have a pressure-control fault, an internal problem or a leak somewhere in the connected pipework. Proper diagnosis is needed to identify the cause.

Why does my Walrus TQ400 keep switching on and off?

Frequent cycling can be associated with pressure loss, small leaks, air in the system or problems with the pump's built-in pressure tank or controls.

Can an older Walrus TQ400 be repaired?

In some cases, yes. Repair feasibility depends on the fault, the condition of the pump and the availability of parts. An inspection can help determine whether repair or replacement is the more economical option.

What pump can replace a Walrus TQ400?

There are several possible domestic booster pump options, but the correct replacement depends on your home's water supply, pressure requirements and existing installation. A replacement should be selected after assessing these factors.

Do you repair Walrus pumps throughout Dublin?

Yes. Boosterpumps.ie provides domestic booster pump fault diagnosis, repairs and replacement services throughout Dublin from our base in Terenure, Dublin 6.

Book a Walrus TQ400 Pump Repair in Dublin

Having trouble with your Walrus TQ400? Contact us before deciding to replace it.

Let us know your location, the problem you're experiencing and, if possible, send us a photograph of the pump and its model label.

We can provide initial advice and help determine the next step.

Call: 083 206 3931

Email: info@boosterpumps.ie