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.
Detailed Specification
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
Delivery Info
UK Standard Delivery
- Free for orders over £60.
- £3.99 for orders under £60.
- Arrives in 3-5 working days.
- Order by 2pm (Mon-Fri) for same-day dispatch.
- Your order will be shipped with Evri, DPD, or DHL.
UK Next Day Delivery
- £6.95 flat fee.
- Order by 2pm (Mon-Thurs) for next-day arrival.
- Orders placed Friday before 2pm arrive Monday.
- Excludes weekend delivery.
- Not available for postcodes: AB31-56, BF (all), HS (all), IM (all), IV (all), KA27-28, KW (all), PA20-80, PH15-50, TR21-25, ZE (all).
Click & Collect
- Ready for collection 48 hours after placing your order.
- Collect: 10am – 4pm, Monday – Friday (Excludes Bank Holidays).
- Address: Castle Farm, Holt Heath, Worcestershire, WR6 6NJ.
European Delivery
- All prices include Duty and VAT. No hidden fees.
- Free delivery on orders over €150* (€7 for orders under €150).
- *This offer applies to most European destinations.
- Your final shipping price is shown at checkout.
International Delivery
- £6.95 flat fee.
- Competitive shipping prices are calculated at checkout.
- We ship to: UK, Ireland, Germany, France, Italy, Spain, Belgium, Netherlands, Portugal, Sweden, Denmark, Norway, Finland, and Iceland.
- Some products cannot ship internationally due to weight or size.
- This includes: Cocoon Breeze, Blakedown, Discovery, melamine, windbreaks, mats, awning rails, driveaway kits, and chemical products.
FAQs
Delivery
UK Delivery
Standard UK delivery is £3.99 on all orders under £60. Orders over £60 qualify for FREE delivery.
If you need your order sooner, you can select Next Working Day Delivery at checkout for an additional £6.95 per order.
Next Working Day Delivery cut-off
To receive your order the next working day, please place your order before 2pm.
Orders placed after 2pm will be dispatched the next working day for delivery the working day after (e.g. order at 2:30pm on Wednesday = delivered Friday).
International Delivery
If you’re ordering from one of our international sites, delivery costs are calculated at checkout. We use local carriers where possible to keep prices competitive and delivery reliable.
Couriers & Tracking
Once your order has been dispatched, you’ll receive an email with your tracking information.
Standard delivery is usually within 72 hours of dispatch (excluding weekends). As a guide, an order placed on Monday should arrive by Thursday, and an order placed on Thursday should arrive by Tuesday.
If you need it sooner, you can choose Next Working Day Delivery at checkout for £6.95. Please note that next working day delivery doesn’t include weekends or Bank Holidays.
Once your order is on its way, you’ll receive tracking details so you can follow its progress via the courier’s website.
Yes — if you’d like your parcel left in a safe place, please add clear instructions in the order notes at checkout.
If your order has already been dispatched, you can usually update your safe-place preference using your tracking link on the courier’s website. Please make sure you also confirm this directly with the courier when they contact you about delivery.
We need your email address to send your order confirmation and dispatch email, including your tracking details.
Your phone number helps us contact you quickly if there’s anything we need to clarify about your order or delivery — particularly for pre-order items. We may also pass your number to the courier so they can reach you if needed while attempting delivery.
In most cases, no, you don’t usually need to stay in and wait. Our couriers will normally provide tracking updates and an estimated delivery window, and you can often leave delivery instructions (such as a safe place or neighbour) via the tracking link.
If your item is large, high value, or requires a signature, you may need to be available. Check your tracking updates for the courier’s specific instructions.
Once your order has been dispatched, we’ll email you your tracking details. You can then track your parcel at any time using the tracking number on the courier’s website.
Returns & Warranty
We want to make returns as straightforward as possible, which is why we offer a 30-day no-quibble returns policy. This gives you 30 days to return an item if you’ve changed your mind or it isn’t quite right.
Returns are at your own cost, unless the item arrives with a manufacturing fault.
Please note: we can only accept returns for items purchased directly from Caravan Auto Shop Ltd. If you bought through a retailer or marketplace, you’ll need to return the item to them in line with their own returns process.
To qualify for a return, items must be unused, in their original packaging, and in a resaleable condition. If an item is returned in a condition that doesn’t meet this criteria, a 10% handling fee may be applied.
**PLEASE NOTE - We are unable to accept items that are heavily soiled or wet. This is down to Health and hygiene reasons. If the product is received back in this state, it will be returned to you for you to return later when dry at your own cost*
Once we receive your return, we’ll process your refund within 14 days.
If your parcel arrives damaged, please take clear photos showing the condition of the packaging and any damage to the item.
Then email our customer service team with the photos and a brief description of what’s been damaged (including whether it’s the packaging, the product, or both). We’ll review it and come back to you within 48 hours to help resolve the issue.
You have 30 days from the delivery date to return your item to us. After this period, the order will no longer be eligible for a refund.
We do offer repairs, but they’re handled on a case-by-case basis. If you believe your tent or awning has a manufacturing defect, please contact our customer service team first with details (and photos if possible).
Our team will assess the issue and recommend the best solution, which may include a repair where appropriate. Repairs can only be arranged following a referral from our customer service team.
If you need a spare part, please visit our Spares pages where you’ll find the available parts for our current range. If you can’t see the part you need, contact us and we’ll do our best to help source it for you.
- Standard Caravan Auto Shop Warranty: 365 days (12 months) from the date of purchase on all Caravan Auto Shop products. Most manufacturing-related issues would typically show up before first use, which is why we always recommend checking items as soon as they arrive.
- Pre-Loved items: 30-day warranty (unless stated otherwise). We strongly advise inspecting Pre-Loved purchases within this period. If you’re not happy, you can return the item within the 30 days.
- Canvas products (purchased from 2024 onwards): Lifetime warranty on the canvas products. Our full warranty policy can be found
Customer Reviews
Caravan Awning
June 19, 2025Purchased a caravan awning in march, very good quality and value for money. Easy to assemble, no issues. Company very helpful and attentive when i had to email them. Will go back and purchase other items from this company .
Sheffield Branch
April 14, 2025Went into the Sheffield branch today to buy a drive away awning for our campervan. The service we received from Tom was outstanding, his knowledge was incredible and nothing was too much trouble for him. Well done young man it was a pleasure to do business with you
Did Some Magic This Time
January 15, 2025Close to home so a walk for most of our caravan bits. Bought virtually everything there in the last two years we have been caravanning, inc. awning and tow bar fitting. Price wise they are always competitive.
Our visit today was a step beyond the usual service we have enjoyed from them.
Tried all over the internet for a removable weather cover for our tow bar with hours of no luck, so we had a walk to shop and as it's discontinued it was looking grim. They had a look on internet and offered a makeshift solution before having the idea of searching their old parts bin just in case. Well surprised and chuffed to find they had one (think they was as well). Thanks David and Steve for the excellent customer service.
Fantastic Service
October 17, 2023Fantastic service from start to finish! Great guidance on the correct items to order and how the process works. Really appreciative of a great service and advice, parts arrived quickly and the fitter arrived at our house to do the work on the driveway as planned. Very happy with the result, thank you so much. Will definitely recommend you!
Easy From Start To Finish
March 11, 2020Ordered online and the towbar came to the house , Caravan Auto Shop was incontact to make sure it had arrived and a day for fitting.
Closer to the fitting day the fitter was in contact with a estimated time they would be here , came at time they said and took about two hours to fit towbar and wire the electrics , it all works as it should 👍
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