This usually indicates the switch is not detecting the required 0

Is this a suitable replacement for the Robertshaw 41-405

Relying on 40-400-02M technical specifications guarantees exact tolerances for high-demand hydronic and potable water applications

Can I use an aftermarket "universal" board instead of this OEM part

Using a part not calibrated to the exact 0

Armstrong Fluid Technology AS1270-259 O-Ring 340793-762 This usually indicates the switchEnsure leak free performance in your HVAC or fluid management system with the Armstrong Fluid Technology AS1270 259 O Ring. This genuine EPDM rubber suction guide seal is specifically engineered to fit the cover assembly of Armstrong SG 55 and SG 65 suction guides, as well as SGG and SGHH models. Measuring exactly 6. 234" ID x 0. 139" CS, this precision molded component provides a high integrity seal for 5 inch pump side connection suction guides. The