Blue Diamond MiniBlue® V2 X88-509 Condensate Pump with CondenSense™ Reservoir

Blue Diamond MiniBlue® V2 X88-509 Condensate Pump with CondenSense™ Reservoir

£99.95
Sale price  £99.95 Regular price 
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Blue Diamond MiniBlue® V2 X88-509 Condensate Pump with CondenSense™ Reservoir
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Blue Diamond MiniBlue® V2 X88-509 Condensate Pump with CondenSense™ Reservoir

Blue Diamond
MPN: X88-509
  • UK stock – fast dispatch
  • UK Mainland Delivery £7.50
  • Expert technical support
  • Trade accounts available
£99.95
Sale price  £99.95 Regular price 
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Blue Diamond MiniBlue® V2 X88-509 Condensate Pump

The MiniBlue® V2 is one of the most compact and efficient performers in the Blue Diamond® V2 Series — purpose-built for reliable condensate removal in space-limited installations. Delivering up to 8 L/hour with a remarkably small footprint, it is ideal for modern, high-efficiency AC systems up to 14kW where size and simplicity matter.

Powered by Blue Diamond's CondenSense™ technology with the intelligent CS2 microchip, the MiniBlue V2 communicates directly between reservoir and pump for real-time monitoring and automatic flow adjustment. The result is whisper-quiet, energy-efficient operation that adapts seamlessly to demand — minimising wear and energy use.

Its filter-free, lightweight design reduces maintenance requirements and simplifies installation, offering long-term dependability with minimal servicing. Integrated elastomeric feet reduce vibration and noise, and streamlined plug-and-play connections make setup faster and cleaner than ever.

Key Features

  • CondenSense™ 2.0 technology with CS2 microchip — intelligent, demand-based operation
  • Automatic flow adjustment for energy-efficient, quiet condensate removal
  • Soft-start control with variable operational volume (19–21 dB(A))
  • Enhanced Rotary Diaphragm technology — prevents bio-film build-up
  • Automatic priming — no need to manually siphon
  • Valveless, clog-resistant, filter-free design
  • Dynamic condensate monitoring with rear-mounted LED indicators
  • Brushless motor — upgraded efficiency and extended service life
  • New combined FSA + HLA alarm system with LED indicator as standard
  • Mountable up to 8m away from the AC unit in any orientation
  • Plug-and-play connectivity — faster, cleaner installation
  • UKCA, CE, Plenum Rated and ETL approved
  • 3-year warranty — class-leading for condensate pump category

Technical Specifications

Parameter Value
Model X88-509
Max Flow Rate 8 L/hour
Max Head 8 Metres
Max Lift 5 Metres
Sound Level 19–21 dB(A)
Suitable AC Unit Size Up to 14 kW
Unit Type Mini Split
Voltage 115V–230V / 50-60Hz
Pump Technology Rotary Diaphragm (Brushless)
CondenSense™ Compatible Yes (CS2 Microchip included)
Alarm System FSA + HLA combined with LED indicator
Certifications UKCA, CE, Plenum Rated, ETL
Warranty 3 Years
Brand Blue Diamond
MPN X88-509
Availability UK, EU, ROW

Discharge Pipe Run

Vertical (V) Horizontal (H)
8 Metres 0 Metres
7 Metres 3 Metres
6 Metres 6 Metres
5 Metres 9 Metres
4 Metres 12 Metres
3 Metres 15 Metres
2 Metres 18 Metres
1 Metre 21 Metres

Note: The MiniBlue® V2 can be mounted in any orientation up to 8 metres away from the air-conditioning unit. For each metre not used on vertical head you can run 3m on the horizontal. A heavy load on the pump will reduce the flow rate over greater distances. Performance is for guide only.

Compatible Systems

  • Air conditioning systems up to 14 kW
  • Mini-split and cassette systems
  • Mid-range fan coil applications
  • High humidity environments
  • Plenum-rated — suitable for plenum space installations

Compatible Brands

Suitable for use with Daikin, Mitsubishi Electric, Fujitsu, Panasonic, Samsung, LG, Hitachi, Toshiba, and most other AC brands.

Replaces Legacy Model

The X88-509 is the direct V2 replacement for the Blue Diamond X87-500 MiniBlue and Blue Diamond X87-504 MiniBlue legacy models.

Frequently Asked Questions

What does CondenSense™ technology do?
CondenSense™ uses the integrated CS2 microchip to enable direct communication between the reservoir and pump, providing automatic flow adjustment, real-time monitoring, and precision soft-start sequencing for quieter, more efficient operation.
Does the X88-509 replace the X87-500 and X87-504?
Yes. The MiniBlue V2 X88-509 is the current replacement for both the X87-500 (Cooling Signal/CR Plug) and X87-504 (Temperature Sensor) legacy models, with improved efficiency, monitoring, and a 3-year warranty.
What AC system size is this pump suitable for?
The X88-509 is designed for AC systems up to 14 kW, including mini-split and cassette applications.
What is the new alarm system on the V2?
The V2 combines the FSA (Fail Safe Alarm) and HLA (High Level Audio) functions into a single enhanced alarm system with an LED indicator as standard — more streamlined and comprehensive than previous models.
Is this pump Plenum rated?
Yes. The MiniBlue V2 is Plenum rated, meaning it meets fire safety standards for use in plenum spaces where materials must limit smoke and toxic fume spread.
Does this pump require a fuse?
Yes. A 0.5A fuse is required but not supplied with the pump.

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