Pentair Water Pressure Switch 42001-0060S
$119.99
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Pentair Water Pressure Switch 42001-0060S
$119.99
The Pentair 42001-0060S is a genuine OEM Water Pressure Switch used primarily as a safety device in pool and spa heaters.
Core Functions & Specifications
- Purpose: It monitors water flow by sensing pressure inside the heater's manifold. If water flow drops or is restricted, the switch opens to shut off the burner, preventing dry firing, hazardous overheating, and melting of internal components.
- Factory Settings: It is set to close at a 3 psi cut-in rating (adjustable if required by specific plumbing elevations).
- Cross-References: You may see this part listed under alternate codes like 420010060S, 6290-410, PEN420010060S, or the manufacturer stamp V7-2B27E9.
Equipment Compatibility
This pressure switch is universally compatible with standard residential and commercial heating units across several Pentair lines:
- Pentair MasterTemp: Fits all sizes (125, 175, 200, 250, 300, and 400 BTU models) in both Natural Gas (NA) and Propane (LP) configurations.
- Sta-Rite Max-E-Therm: Works seamlessly across the entire heater line.
- Pentair ETi 400: Compatible with high-efficiency commercial/residential models.
Troubleshooting: The "ERR PS" or "Service System" Light
If your heater's digital display reads "ERR PS" or triggers the "Service System" light, the pressure switch circuit is open. Before assuming the part itself is broken, check the following mechanical issues:
- Dirty Pool Filter: Reduced flow through a dirty filter or a clogged pump basket lowers the pressure below 3 psi, preventing the heater from firing. Backwash or clean your filters first.
- Valves Misaligned: Ensure your pool/spa suction and return valves are fully open to the heater path.
- Internal Bypass Issues: If a thermal regulator or internal bypass valve is cracked or failing, it can starve the pressure side of the manifold, failing to trip the switch.