Verify 24V power at the 'R' and 'C' terminals before concluding the board is defective

or the gas valve clicking without allowing flow

The Copeland RST45C1E-CAA-901 is a high-performance hermetic reciprocating compressor engineered for extended medium-temperature refrigeration

OEM Compatibility: Designed as a direct drop-in replacement for Armstrong and allied HVAC equipment to ensure a perfect fit

Shock and Vibration Dampening: The elastic properties of the 9JES sleeve effectively isolate torsional vibration

Armstrong Fluid Technology 89975001-81701K Seal Kit Els PW 17895 Verify 24V power at theThe Armstrong Fluid Technology 89975001 81701K Seal Kit is a critical mechanical seal replacement designed for high performance HVAC centrifugal pumps. Engineered for precision and durability, this EPDM seal kit ensures a leak proof interface within your hydronic heating and cooling systems, maintaining optimal pressure and fluid containment. This specific kit serves as the direct replacement for 89975091 81701K, offering seamless backward