S1-02427634001 York / Coleman .65"WC SPNO Close On Fall # Switch
S1‑024-27634-001 Pressure Switch – 0.65" WC, SPNO, Close on Fall
Product Overview
The York S1‑02427634001 is an OEM 0.65" WC pressure switch designed for reliable furnace safety monitoring and proper airflow verification. This SPNO (Single‑Pole, Normally Open) switch closes on pressure fall, ensuring the system only fires when draft and combustion conditions meet manufacturer specifications.
Engineered for compatibility with select York, Coleman, and Luxaire units, this switch maintains safe operation by preventing burner ignition under inadequate draft or blocked vent conditions.
Key Features
-
OEM York Replacement – Ensures proper fit, function, and reliability
-
Pressure Rating: 0.65" WC
-
Switch Type: SPNO – Closes on fall
-
Application: Furnace draft/combustion air proving
-
Safety Function: Prevents burner operation during venting or airflow faults
-
Durable diaphragm and calibrated spring for consistent performance
Technical Specifications
| Specification | Detail |
|---|---|
| Pressure Setpoint | 0.65" WC |
| Switch Action | SPNO – Closes on fall |
| Electrical Rating | Low‑voltage furnace control circuit |
| OEM Part | Yes |
| Manufacturer | York |
| Typical Use | Draft/inducer proving, combustion safety |
Common Symptoms of a Failed Pressure Switch
-
Furnace short‑cycling
-
Inducer running but no ignition
-
Error codes related to draft or airflow
-
Furnace stuck in startup sequence
Replaces / Cross‑References
If you want, I can pull cross‑refs from Neuco or other distributor data — just say the word and I’ll add a full compatibility table.
SEO‑Optimized Tags
Pressure Switch, York OEM, Furnace Safety Switch, 0.65 WC, SPNO, Close on Fall, HVAC Controls, Draft Inducer Switch, York Replacement Parts
PRESS SW -0.65c