Whale Heater Expanse PCB Gas Elec Main 782.115 - AK1900

Whale Heater Expanse Gas & Electric Main PCB – OEM Replacement Control Board (AK1900)

The Whale Heater Expanse PCB Gas Elec Main 782.115 (AK1900) is a genuine replacement main printed circuit board engineered for Whale Expanse gas and electric water heaters commonly fitted in caravans, motorhomes, campervans and van conversions. This PCB acts as the central control unit, managing key functions like ignition, temperature regulation and safety protocols, so your onboard hot water system operates safely and efficiently.

Replacing a faulty PCB with this OEM part helps restore full heater performance and resolves issues caused by electrical failure, including inconsistent heating or system shutdowns.

🧠 Key Features & Benefits

• Genuine Replacement PCB: Built to original Whale specification for reliability and long service life in mobile heating environments.

• Central Electronic Control: Regulates essential functions — ignition, thermostat control and safety cut-offs — for gas and electric mode heaters.

• Improved Safety & Efficiency: Helps maintain correct heater logic to prevent malfunction and ensure consistent hot water delivery.

• Direct OEM Fit: Designed to replace the main board in compatible Expanse models without modification.

• Ideal Spare Part: Essential replacement when diagnostic codes, erratic operation or loss of control functions occur.

🔌 Compatible Heater Models

This AK1900 Expanse PCB is compatible with a range of Whale LIN & iVan Expanse water heaters, including:

• Whale Expanse G/E U/F CBE Duo – Model DW8201UR

• Whale Expanse G/E OB CBE LIN – Model DW8202OR

• Whale Expanse G/E UF CBE LIN – Model DW8212UR

• Whale Expanse G/E iVan Onboard – Model IW0801OC

• Whale Expanse iVan U/F Bulk – Model IW0801UB

• Whale Expanse G/E U/F iVan LIN Zigbee – Model IW8212UR

Before ordering, check your heater’s specific model to confirm compatibility.

🔧 Best For

✔ Caravan, motorhome and campervan owners needing a main control PCB replacement
✔ RV workshops and technicians stocking genuine Whale spares
✔ Replacing PCBs showing fault codes, failure to ignite or erratic performance
✔ Restoring dependable gas and electric heating control in Expanse systems