Patterson-Kelley 86-8335-0170 Air Flow Switch 321894-706 the main control board may

the main control board may require a manual reset to clear the internal fault code

Is the MARS 43343 an automatic or manual reset switch

the switch is performing its safety function to prevent damage to the heat exchanger

Adjustable Sensing: The differential pressure switch allows technicians to fine-tune the engagement threshold from 0

Frequently Asked Questions What are the connection sizes for the 106484002 valve

Patterson-Kelley 86-8335-0170 Air Flow Switch 321894-706 the main control board mayThe Patterson Kelley 86 8335 0170 Air Flow Switch is a critical safety and operational component designed for high performance commercial boilers and water heaters. As an OEM airflow switch replacement, this unit utilizes a sensitive differential pressure diaphragm to detect proper combustion air or exhaust flow. It is engineered to interface directly with Patterson Kelley industrial air flow switch control systems, ensuring the burner only fires when