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WHALE Expanse PCB - Image 1
WHALE Expanse PCB - Image 2
WHALE Expanse PCB
WHALE Expanse PCB - Image 2

WHALE Expanse PCB

Original price was: 255.00£.Current price is: 226.00£.

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Product Description

WHALE Expanse PCB – Reliable Control Board for Marine and Caravan Heaters

Overview

The WHALE Expanse PCB is a premium replacement control board designed for marine, caravan, and motorhome heating systems. This PCB manages both gas and electric heating functions for WHALE Expanse water and space heaters, ensuring efficient, reliable, and safe operation. Ideal for UK boats, caravans, and mobile homes, it guarantees consistent hot water and space heating, making it a vital component for mobile and off-grid living.

Key Features & Benefits

  • Dual-Fuel Control: Compatible with gas and electric WHALE Expanse heaters, providing flexible and energy-efficient heating.
  • Reliable Performance: Maintains stable operation of water and space heaters, ensuring consistent performance.
  • Durable Construction: Engineered to withstand vibration, moisture, and marine conditions, offering long-lasting reliability.
  • Easy Replacement: Compatible with a wide range of WHALE Expanse heater models, ensuring quick installation and minimal downtime.
  • Energy-Efficient Operation: Optimises both gas and electric usage, reducing energy consumption while maintaining consistent heat output.
  • UK Safety Compliance: Meets UK marine, caravan, and motorhome standards, ensuring safe operation.
  • Compact & Space-Saving: Designed to fit neatly inside the heater unit, ideal for mobile applications.

Why Choose WHALE Expanse PCB?

The WHALE Expanse PCB is the perfect replacement for UK customers who require a durable, energy-efficient, and reliable control board. It ensures consistent hot water and space heating, making it essential for marine, caravan, and motorhome applications where performance and reliability are critical.

Product Name: Whale Expanse PCB

Product Type: Main Control Printed Circuit Board (PCB) for Whale Expanse Water and Space Heating Systems

Function:

  • Acts as the central electronic control unit for Whale Expanse water heaters and underfloor or space heating systems
  • Manages operation of heating elements, gas burners, pumps, fans, and sensors
  • Ensures safe and efficient operation by monitoring system parameters and triggering safety cut-outs

Key Features:

  • Controls gas and/or electric heating elements depending on system configuration
  • Interfaces with thermostats, flame sensors, water level sensors, and control panels
  • Supports ignition, flame monitoring, and automatic shut-off for gas operation
  • Provides diagnostic outputs via LEDs or fault codes for troubleshooting
  • Compact and durable PCB design for easy integration and replacement
  • Compatible with Whale Expanse water heaters, underfloor heating kits, and combined gas-electric systems

Electrical Specifications:

  • Control Voltage: 12V DC (typical for mobile/heating systems)
  • Load Control: Capable of switching heating elements, pumps, and fans via relays or solid-state switches
  • Input Signals: Thermostats, temperature sensors, water level sensors, and user interface controls
  • Output Signals: Heater elements, gas valve, pump, fan, and diagnostic indicators
  • Low standby current for energy-efficient operation

Safety Features:

  • Flame failure detection for gas operation
  • Over-temperature protection for water and space heating
  • Low water level shutdown if integrated with system
  • Short-circuit and overcurrent protection for connected devices
  • CE-certified and compliant with mobile appliance safety standards

Construction & Environmental Specifications:

  • PCB Substrate: Flame-retardant FR4 or equivalent
  • Components: Automotive/marine-grade for vibration and shock resistance
  • Optional conformal coating for moisture and corrosion protection
  • Operating Temperature: –20°C to +70°C
  • Designed for mobile, marine, and off-grid environments

Installation Requirements:

  • Must be installed by a qualified technician familiar with gas/electric mobile heating systems
  • Requires connection to heating elements, pumps, fans, sensors, and control panels via wiring harness
  • Mount inside heater enclosure away from direct heat sources
  • Follow manufacturer wiring diagrams for safe installation

Applications:

  • Whale Expanse underfloor water and space heaters
  • Mobile or marine water heaters with gas, electric, or dual operation
  • Replacement or service part for existing Whale Expanse systems

Compliance:

  • CE certified
  • EN 60335-2-102 for mobile water and space heating appliances
  • Meets LPG and mobile electrical safety standards

Dimensions (approx.):

  • Height: [Insert dimension]
  • Width: [Insert dimension]
  • Depth: [Insert dimension]

Weight: ~[Insert weight]

Warranty: Manufacturer warranty applies; check supplier for details

  • At Prime Caravan Breakers we are committed to providing excellent Customer Service by sending orders as quickly as possible. Our stock levels are live and shown against each product.
  • We use Trans Direct Shipping to provide our Customers with the most cost effective and suitable Courier service depending on their location.
  • All orders are picked and packed in our Somerton Warehouse. We endeavour to use your nominated Courier but sometimes issues are beyond our control. If Courier pick up is going to be delayed or an item doesn’t get picked up, we will use our discretion and sometimes use UK Post and other methods to ensure your order reaches you quickly. 
  • Please ensure you enter the Correct Address. Should your parcel be returned to Prime Caravan Breakers the customer will be liable for any costs to resend.
  • If you are  local we offer pick up from our Somerton, Victoria factory. Over counter sales are welcomed from our fully stocked shop.
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4.8
Based on 16 Reviews
Write a Review
Amanda F.
Amanda F.
July 1, 2026

Ordered A 200W Solar Panel Kit

Ordered a 200w solar panel kit. The price was unbeatable. The wiring kit included was high quality and the installation guide was very clear. It has transformed our off-grid capabilities. Highly recommended.

Nigel A.
Nigel A.
March 19, 2026

Ordering Furnishings and Cupboard Handles

We fully refurbished our interior using their range of soft furnishings and cupboard handles. The quality of the products rivaled high-end motorhomes. Excellent value for money.

Paul W.
Paul W.
February 10, 2026

Hitch Locks and Wheel Clamps

Don't buy your hitch locks and wheel clamps anywhere else. The quality is second to none. I feel so much safer leaving my van now. Plus, their guide on 'How to fit' is very helpful.

Henry D.
Henry D.
June 27, 2025

Full Awning Set

Purchased the large inflatable awning. It is an investment, but the quality is outstanding. Delivery was tracked and arrived when promised. The instructions were clear and I had it up in 30 minutes. Thank you!

Chloe W.
Chloe W.
April 23, 2025

Caravan Light

Great selection of LED lighting and internal fittings. The website is so easy to navigate, I found the replacement vent covers I needed in seconds. My van looks brand new inside now!

Linda B.
Linda B.
September 11, 2024

Caravan Battery and Charger Unit

I was struggling to find a specific battery charger. Someone on a forum suggested these guys. They had it in stock. Great price and works like a dream. I’m a customer for life.

Peter K.
Peter K.
August 1, 2024

Purchasing Caravan Door Lock

The replacement door lock fitted perfectly. It is a high-security version that gives me peace of mind. Quality product and fast delivery.

Sarah &.
Sarah &.
June 13, 2024

Porch Awning

We bought a new porch awning from here and it is superb. The material is heavy-duty and feels like it will last for years. They even included some extra pegs. A brilliant company to deal with.

Steve M.
Steve M.
July 6, 2023

A Gas Bottle and Regulator

Needed a new gas regulator quickly before a trip. This site had the exact one. It came next day. What more could you ask for? Highly professional.

James C.
James C.
April 11, 2023

Van/Truck Delivering A Package

Ordered a new water pump and filter on Monday, arrived Tuesday. That’s what I call service. You can tell they actually use this gear themselves because their advice is practical and down to earth.

Robert H.
Robert H.
August 16, 2022

Towbar and Hitch Lock

As a full-timer, I rely heavily on my gear. This site is a lifesaver. Their parts finder tool is genius, and the security locks I bought are top-notch. Fast shipping to rural Scotland too! 10/10.

Patricia G.
Patricia G.
May 29, 2021

Complete Water and Waste Kit

The complete water and waste kit was a great deal. It came with everything we needed for a long trip. The delivery was incredibly fast. It really made our holiday stress-free.

Geoff T.
Geoff T.
May 25, 2021

A Roof Light

Needed a new skylight for my Swift. Found it here cheaper than the manufacturer's site. Delivered in 48 hours. No drama, just brilliant service. Highly recommended.

Susan C.
Susan C.
April 1, 2021

Caravan Accessory Box

The range of awnings is staggering. I found exactly what I was looking for at a price that was hundreds cheaper than the local dealership. Delivery was fast and well packaged. Will definitely be back for the bathroom accessories.

Margaret E.
Margaret E.
September 1, 2017

Used Caravan

The customer service is wonderful! I got confused with the awning size chart and called them. The lady on the phone was so patient and measured it out with me. The awning fits perfectly. Thank you so much.

David M.
David M.
October 21, 2014

Caravan Awning

I’ve been using these guys for years. They are the only place I trust for genuine parts. When my motor mover broke in peak season, they had the replacement part in stock and talked me through the install over the phone. Unbelievable service.

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