Flame/Overheat Sensor (D2/D4/B4)
Flame/Overheat Sensor (D2/D4/B4) is backordered and will ship as soon as it is back in stock.
Delivery and Shipping
Delivery and Shipping
Products ship in 1-2 business days.
Flame/Overheat Sensor (D2/D4/B4)
Flame/Overheat Sensor (D2/D4/B4) is backordered and will ship as soon as it is back in stock.
Flame/Overheat Sensor (Combi-Sensor) for Espar D2, D4 & B4 Heaters
Keep your Espar heater running safely and efficiently with this OEM-quality Flame/Overheat Sensor — also known as the combi-sensor. Designed specifically for Espar Airtronic D2, D4, and B4 heaters, this sensor plays a critical role in monitoring startup and regulating heat exchanger temperature to prevent overheating.
Key Features
- Monitors heater startup sequence for reliable ignition
- Continuously tracks heat exchanger temperature to prevent damage
- Functions as both a flame sensor and overheat protection device
- Direct OEM replacement — no modifications required
- Compatible with Espar Airtronic D2, D4, and B4 models
Installation
Refer to your Espar repair manual for installation procedures.
Part Number: 25.2069.01.0200
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