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WLD190 series products are specially designed for the pump design supporting the integrated single pump economic intelligent controller.
WLD190 intelligent controller has superior performance and rich use of functions, suitable for pump automatic control, with high quality, multi-function, low noise, universal strong characteristics.

Product description

With high quality, multi-function, low noise and strong commonality etc. characteristics, WLD190 multi-function energy-saving controller is suitable to full-automatic operation.


• Professional design based on users’ needs, simplicity of operation and suitable for all kinds of applications;

• According to the water condition to supply constant pressure water without manual operation after parameters were set correctly;

• Stop running automatically when no water consumption;

• Alarm automatically when faults occurred;

Product parameters    

Model No.

Rated Input Voltage (V)

Input Current


Max. Output

Current (A)

Motor Power
















Picture representation


Company Contact

Guangzhou Bedford Electrical Equipment Co., Ltd.

Address: 1st Floor Building C, No.2, Taowan Industry Zone, Liwan District, Guangzhou, China.

Phone: +86 20-81561021

Fax: +86 20-81891390

Zip code: 510370

Service Hotline: 1350002099 18664751963

Email: bedford.cn@gmail.com


• Please don’t dismantle, change the product, or may cause electric shock, fire hazard and personal injury;

• Please don’t open the cover during the running of controller;

• Please don’t put wire, bar of metal, filaments etc. into the controller so as not to cause a short circuit or get an electric shock;

• After controller powered on, its cannot be touched even if in down state as the terminals of the controller are still live, otherwise, there is a risk of electric shock

• Please don’t splash water or other liquid over the controller.

• Wiring work is performed by qualified electricians, and construct is performed in accordance with electrical code.


• Please don’t make withstand voltage testing for the controller;

• Never connect AC power to output UVW terminals;

• If the internal components of the controller were influenced or damaged by static, please do not to touch;

• The motor, controller and power specifications should be matching, otherwise it could cause abnormal operation even burn out the device;

• If the controller appears serious vibration, noise, heat or peculiar smell in the first operation, please cut off the power immediately and contact suppliers or service center later;

• Please don’t install the controller in the environment with direct sunlight, rain, frost or snow in case of deformation or damage.

• When the IPM module reaches a certain temperature, the cooling fan of Inverter will rotate.

• Please do not touch the cooling fan of Inverter casually.

System Running Fault and Trouble Shooting





Can’t Sleep

1. Outlet pipe leakage;

2. Check valve leakage;

3. Pressure tank damage;

4. High environment EMI;

5. Wrong parameter

• Check outlet pipe, or to set b00.13;

• Inspect check valve;

• Change pressure tank;

• Transduceradoptshieldedwires, shielded layer connect to PE;

• Ensure b00.10

Full-Frequency Running

1. Lose pressure feedback;

2. Wrong parameter;

3. Pump under power

• Check transducer and wires;

• Set b00.23=1, take a factory reset

Motor Noise

1. Motor abnormal;

2. Motor installation is not stable;

3. Low carry-frequency

• Check motor;

• Proper turn up carrier frequency b00.21

After-sales service

1. The warranty is limited to the inverter itself. Within 12 months from the date of purchase, the inverter will provide free maintenance services if the product is damaged due to malfunctions caused by the product itself within 12 months from the date of purchase.

2. During the warranty period, if something happens, our company will charge a certain amount of maintenance fee depending on the situation.

A. Failure to strictly follow the "Instruction Manual" or exceed the standard requirements in an environment that does not meet the requirements of the "Instruction Manual".

B. Failure caused by self-repair or modification without permission.

C. Faults caused when the inverter is used for abnormal functions.

D. The inverter is damaged due to incorrect wiring.

E. Damage caused by improper storage, fall or other external factors after purchase.

F. Failures caused by natural disasters such as abnormal voltage, lightning, fire, water mist, metal dust, gas corrosion, earthquakes, storms, or disaster-related causes.

G. Tear off the product identification (such as nameplate, etc.) without authorization; the serial number of the body does not match the warranty card.

3. If you have any questions, please contact the agent or contact our company directly.

4. For machines beyond the warranty period, our company will also provide lifetime paid maintenance services.

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About us

Bedford water supply equipment is widely used in high-rise residential buildings, villas, schools, hospitals, large communities, air source heat pump hot and cold water systems, solar water heating systems, water treatment, energy-saving water supply systems for buildings, and other occasions. ​​​​​​​

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