Marvair 70281 Control Board 320788-704 airtight seal against the collector

airtight seal against the collector box

the capillary tube is a sealed system containing a thermal sensing fluid

What causes this ignitor sensor to fail prematurely

Integrated Fan Selection: Built-in three-position selector switch (Auto-Off-Fan) eliminates the need for external subbases or additional wiring during HVAC installation

the NBR seals are rated for air and water

Marvair 70281 Control Board 320788-704 airtight seal against the collectorThe Marvair 70281 Control Board is a specialized 24 volt OEM electronic module engineered for Marvair ComPac, Slimpac, and Minipac vertical wall mounted air conditioning systems. As a direct replacement for LPR AJ1710 1 and LPR AJ1710 2, this board manages critical system logic, including compressor sequencing, blower relay timing, and integrated safety circuits. It is designed to handle the high internal heat gains typical of telecommunication