Whale Primary Control PCB For Space Heater 4.2kW - AK1265

Whale Primary Control PCB for Space Heater 4.2 kW – Replacement Main Circuit Board (AK1265)

The Whale Primary Control Printed Circuit Board (AK1265) is an essential OEM heater electronics replacement designed for Whale 4.2 kW caravan and motorhome space heaters. This main control PCB governs core functions of your heater — including ignition, temperature regulation and safety systems — ensuring your onboard heating operates reliably, efficiently and safely on every trip.

Compatible with specific 4.2 kW Whale space heater models (Mk2, Mk3 & Mk4 versions without a reset button), this genuine part is perfect for restoring full heater control after electronic failure or upgrading an ageing board.

Product Overview

• Part Number: AK1265 — original Whale replacement PCB for space heater spares.

• Application: 4.2 kW Whale space heater control board for caravan & motorhome heating systems.

• Function: Manages heater ignition, temperature control and safety cut-offs for efficient and safe operation.

• Compatibility: Ideal for Whale space heaters such as SH4412IB, SH4412IR and SI4412IR Mk2/Mk3/Mk4 versions without reset button.

• OEM-Grade Quality: Designed and manufactured to original Whale specifications for reliable long-term service.

Key Features & Benefits

• Essential Heater Control: Acts as the central “brain” of the heater, regulating power, ignition and thermostat functions.

• Reliable Replacement: Genuine Whale PCB ensures proper fit, correct functions and long service life compared with generic alternatives.

• Restores Performance: Ideal if your existing PCB has failed, shows erratic behaviour or heating performance is inconsistent.

• Built for RV Environments: Durable circuitry designed to withstand vibrations and conditions typical in caravans and motorhomes.

• Easy Swap-In Replacement: Designed to fit standard Whale PCB mounting locations — making service or repair straightforward for technicians.

Compatible Space Heater Models

✔ Whale 4.2 kW space heaters — including Mk2, Mk3 and Mk4 units without a reset button
✔ Specific models like SH4412IB, SH4412IR, SI4412IR commonly used in caravans and motorhomes

Before purchase, make sure your heater model does not require a reset-button-equipped control board variant.