Clearwater C Series PCB

The Clearwater C Series PCB is the genuine replacement circuit board engineered specifically for Clearwater C-series chlorinators. This is the authentic Clearwater Original PCB W080341, designed to restore precise control over your chlorination system and keep your pool chemistry steady. For larger units, a specialized fused variant is available as W080361, featuring a built-in circuit breaker to handle higher load and reduce the risk of blown fuses.

Key advantages that matter in practice

• Genuine Clearwater design—built to match the original control logic and component tolerances for dependable performance.
• Circuit breaker up to 21 amps—protects the system across a wide range of C-series sizes, reducing downtime from electrical faults.
• Specialized fusion option for larger units—the fused PCB variant W080361 is tailored to higher-demand configurations, delivering safer, more robust operation.
• Wide compatibility—compatible with early B, BH, HS, TS, QC variants and Hydromaster 4000 & 7000 installations, covering a broad spectrum of Clearwater setups.
• Defined output configuration—supports multiple output configurations (130/140/170/190/200/270 B/C/LS/BH/TS), ensuring it matches your specific chlorination needs.
• Precise, safe adjustment protocol—only the uppermost output trim pot is used to set the maximum output; the lower two trim pots are not adjusted during normal operation to prevent miscalibration.
• Safety-first installation—handle with care: work with rubber gloves, use a very small screwdriver, and be mindful of 240V mains to keep you and the equipment safe.
• Performance reliability—the combination of a dedicated PCB and integrated protection helps stabilize chlorine production and reduce unexpected downtime.

What problems this PCB solves

• Eliminates intermittent control issues that can cause uneven chlorine generation.
• Prevents fuse-related outages in larger C-series units by using a purpose-built fused design and circuit breaker.
• Provides a trusted, manufacturer-aligned replacement that preserves the original system behavior and compatibility.

Ideal for

• Technicians performing maintenance or replacements on Clearwater C-series chlorinators.
• Pool owners seeking a durable, plug-and-play replacement that maintains system integrity and safety measures.
• Systems running Hydromaster 4000 & 7000 configurations that require a certified Clearwater PCB with robust protection.

Installation and use tips

• Power down the chlorinator and discharge any residual voltage before handling the PCB.
• Install the Clearwater C Series PCB (W080341 or W080361, as appropriate) ensuring all connectors align with the existing harnesses.
• Keep the two lower trim pots untouched if you are not performing advanced calibration; focus only on the uppermost output trim pot for final tuning.
• With the unit running, use a very small screwdriver to adjust the uppermost trim pot until you reach the desired 100% output, monitoring the system response.
• For a controlled test, carefully hold the cell leads between your thumb and forefinger and touch the sensor wire to observe the output behavior—do not bypass safety procedures, and remove power if any abnormal readings appear.
• Always operate with rubber gloves and follow 240V safety precautions to minimize risk during installation and adjustment.

Choosing a Clearwater C Series PCB means opting for a purpose-built replacement that aligns with your chlorinator’s design, protects your investment with built-in safety features, and delivers dependable, predictable chlorine production. Whether you’re upgrading a standard unit or servicing a larger Hydromaster setup, this PCB is tailored to meet the exacting needs of Clearwater systems.