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EMERSON 1F87U-42WF Sensi Smart Thermostat User Guide — questions & answers

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Should I remove the PS-W and PS-Y jumpers on the Emerson 1F87U-42WF when replacing a model 1F85U-22NP that did not have them?

2026-08-31 1 answer

The Emerson 1F87U-42WF (Sensi Smart Thermostat) typically uses a single internal jumper (often labeled RC/RH) to bridge power between heating and cooling systems. The…

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How do I set up and control humidity levels with the EMERSON 1F87U-42WF Sensi Smart Thermostat?

2025-12-03 1 answer

To set up and control humidity levels with the EMERSON 1F87U-42WF Sensi Smart Thermostat, follow these steps: 1. **Setting Up Wired Humidification:** - Ensure…

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